IBM IMS 12 Transaction and Database Servers deliver savings you can count onIBM Europe, Middle East, and Africa Software Announcement ZP11-0453
October 4, 2011
IMS 12 Database Manager (IMS DB) enhancements
IMS 12 Transaction Manager (IMS TM) enhancements
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IMS is IBM's high-performance application and data server for IBM® System z®. No other solution offers the combination of extremely high performance, scalability, rock-solid reliability, and runtime efficiency. When it comes to running core applications that are at the heart of business processing, most large corporations worldwide continue to depend on IMS.
Today's enterprise IT needs are more closely tied to the business than ever before. The business requires efficiency to meet the cost challenges and responsiveness demanded by the global economy. Enterprise IT must support growth, allowing the business to rapidly develop new products and services to remain competitive while at the same time increasing productivity and flexibility on demand. Business today also requires IT systems to be resilient, helping reduce business risk and helping the business to comply with regulations and business processes.
IMS and IMS tools continue to evolve to provide value and meet these needs for enterprise customers. They have provided investment protection for four decades.
IMS provides unmatched capabilities to address your on demand business needs through enhanced integration, openness, manageability, and scalability.
IMS 12 benefits include:
IMS includes many additional features and improvements that along with the System z platform will help you meet your IT and enterprise data center cost challenges, as well as efficiency, resilience, and flexibility needs.
To learn more about IMS products and tools, visit
Refer to the Software Announcement ZP10-0404, dated October 05, 2010.
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IMS 12 can be used with all IBM processors capable of running z/OS® (5694-A01) V1.11, or later, and supports the Long Displacement Facility of the z/Architecture®. Additional prerequisites exist for specific IMS 12 functions.
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October 28, 2011
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Integrated and open access for simplified application development and deployment
Enhanced IMS TCP/IP communication
IMS TCP/IP communication has been enhanced to enable IMS systems to communicate directly with other IMS systems across a TCP/IP connection, eliminating the maintenance cost, pathlength hops, and complexity associated with routing TCP/IP communications between IMS systems through a third-party TCP/IP gateway solution. IMS to IMS TCP/IP communication is supported by IMS Connect and can be used by both the Multiple Systems Coupling (MSC) and Open Transaction Manager Access (OTMA) functions of IMS.
IMS Connect, the integrated TCP/IP server for IMS, manages the TCP/IP connections and protocols for IMS to IMS TCP/IP communications and has been enhanced to support direct TCP/IP connections between IMS Connect instances. Each defined TCP/IP connection can be used either by MSC or OTMA. IMS Connect has been enhanced to support MSC links. Communications between IMS Connect and MSC is managed by the Structured Call Interface (SCI) of the Common Service Layer (CSL). IMS Connect support for OTMA TCP/IP communications leverages existing support for OTMA and introduces a few changes to the configuration of IMS Connect support for OTMA.
MSC has been enhanced to support a new TCP/IP-type MSC link. The TCP/IP-type MSC links support the sending and receiving of transaction messages and their responses. Depending on installation variables, the TCP/IP-type MSC link can provide increased bandwidth over VTAM-type MSC links and therefore improved performance. The configuration and operation of MSC TCP/IP links are similar to that of MSC VTAM® links, and both link types can coexist and be used as backup to each other to help availability.
MSC TCP/IP also provides support for generic IMSIDs, similar to that for MSC VTAM Generic Resources (VGR) and USERVAR support. This simplifies communicating to an IMS Shared Queue IMSplex from IMSs outside the IMSplex. This also enables use of a common, generic IMSID by IMS eXtended Recovery Facility (XRF) active and alternate IMSs.
OTMA has been enhanced to support sending transaction messages from application programs running in a dependent region across a one-way TCP/IP connection to another IMS system for processing. To simplify the definition of remote IMS systems as the TCP/IP destinations for OTMA transaction messages, the OTMA destination descriptor has also been enhanced to enable the easy specification of the required parameters.
To ease operational support for IMS to IMS TCP/IP connections, new IMS type-2 commands, as well as enhanced IMS Connect WTOR and z/OS MODIFY commands, are provided.
IMS Connect type-2 Query and Update commands are also added, entered through the IMS Operations Manager (OM) in support of IMS Connect resources, to allow wildcards and filters to be issued through the OM API. Type-2 command support for IMS Connect resources includes alias, client, converter, datastore, IMSplex, Link, MSC, ODBM, Port, Racfid, RmtIMSCon, Sendclnt, and UOR. This command support improves IMS operations and eases use in a production environment.
Additional IMS Connect enhancements enable customers to use IMS Connect more easily while providing improved performance and diagnostics. These enhancements can help reduce costs of RACF® security, provide RACF-specific return codes for security errors, provide new trace points for the Recorder trace, refresh XML converters, identify clients hung in partial read status, eliminate the requirement for customer assemble and link of supplied exits, and expand CM0 ACK Nowait to roll-your-own (RYO) clients.
Additional OTMA and APPC enhancements
Open Transaction Manager Access (OTMA)/Application Program-to-Program Communication (APPC) Synchronous Shared Queues support using XCF provides an option to communicate between the front-end IMS and the back-end IMS for the shared queues transaction for improved performance, simplicity of the synchpoint process, and resiliency, without using Resource Recovery Service (RRS). This new IMS option supports OTMA Commit Mode 1 (send-then-commit) and APPC synchronous transactions with Synch level=None/Confirm transactions running in the shared queues environment. This capability removes the RRS dependency for Synch level NONE and CONFIRM transactions. This enables growth of IMS Sysplex workload for service-oriented architecture (SOA) applications. This provides a simplified solution, using IMS instead of RRS as the synchpoint coordinator for shared queues transactions.
OTMA Access Control Environment Element (ACEE) enhancements reduce the ACEE storage needed to run IMS and help provide an improved security environment for running OTMA transactions. The Common OTMA ACEE Reduction/Hash Table for Multiple clients creates one RACF ACEE for a user and shares it for all of the OTMA clients. Previously, multiple RACF ACEEs for the same user could be created and cached multiple times (one for each OTMA client) in an IMS Control region. Storage consumption for RACF ACEE for users would be decreased, and the new maximum ACEE aging value of 99,999 seconds has been introduced with this enhancement. This can reduce storage requirements, improve security, ease capacity constraints, and help maintain high availability.
OTMA provides a new option for the input commit-then-send (CM0) message to request an IMS DFS2082 message when the IMS transaction does not send back an IOPCB reply. This eases the OTMA send-then-commit (CM1) to CM0 application conversion and reduces the unnecessary timeout in the remote applications, thus removing a performance impact for a remote application waiting for a timeout before continuing to the next request.
IMS APPC support provides a new return code on the DFSLUEE0 user exit to inform IMS to discard an asynchronous output message if IMS cannot deliver it, rather than to have IMS put the message back on the queue, thus enhancing availability.
IMS TM Resource Adapter (RA) enhancements
IMS TM RA enhancements further expand environment usage ease deployment, management, availability, security, and use, with support for:
WebSphere Application Server CE and non-Java EE server are being provided through the IMS 12 service process.
WebSphere Application Server V8, Callout reconnect, and non-IBM Java EE application server support are also being provided through the IMS 11 Service process.
IMS Universal Driver enhancements
The IMS Universal drivers are enhanced to support variable-length IMS database segments, two new datatypes (arrays and structs), and segment maps, which are different cases (sets of fields) within a segment where each case is only valid for a unique value of the map's control field. These enhancements provide further database simplification and flexibility with a more robust solution for all database segment types, an increased range of datatypes that the drivers can manage themselves, and richer support for field redefines.
Additional IMS 12 integration items also being provided through the IMS 11 service process
OTMA and Connect enhancements for Callout messages include Delayed ACK and TPIPE Cleanup support. Delayed ACK enables OTMA to respond to a late ACK so Connect can inform the client properly. TPIPE cleanup enables IMS to remove transaction pipes after they have been idle for three batch job consecutive system checkpoints.
Type-2 IMS Universal driver support provides for connectivity to IMS databases from local z/OS runtime environments. This is in addition to the Type-4 IMS Universal driver support initially provided with IMS 11 for distributed access to IMS databases from TCP/IP enabled platforms and run times.
Universal JDBC driver support for XML database enablement allows IMS databases to both store and retrieve XML content through Open Database, further simplifying and standardizing access to this data.
IMS integration with Data Source Explorer (DSE) and Cognos® enables IMS to be an integral part of the IBM portfolio of solutions for operational business intelligence and reporting support with Cognos, and for database exploration, edit, and SQL scripting with DSE.
Persistent Java Virtual Machine (JVM) support in IMS Message Processing Programs (MPP), Batch Message Processing (BMP), and Fast Path (IFP) regions provides for calling Java from Enterprise COBOL out of these non-Java dependent regions (JDR). This enables COBOL to recognize and retain the JVM. This improves performance for COBOL to Java interoperability when leveraging Java from legacy COBOL applications. With this support, IMS manages the JVM, which is taken down only when the MPP region terminates. Two new JCL parameters for non-JDRs (ENVIRON= and JVMOPMAS=) are provided to allow users to specify that IMS should create/manage the JVM in the non-JDR (for example, MPP region) with the same parms as those supported for IMS Java Message Processing (JMP) and Java Batch Processing (JBP) regions.
The following items are separate products that provide additional integration for IMS 11 and 12 users
IBM IMS Enterprise Suite enhancements are provided for its Connect API for C, SOAP Gateway, and Explorer components through the IMS Enterprise Suite 1.1 service process or the IMS website at
IBM WebSphere Message Broker V8.0, to easily and quickly connect external systems to IMS, provides new nodes that allow IMS customers to seamlessly integrate with .NET applications on Windows, and also with Sterling Connect:Direct® for end-to-end file processing. IMS customers can also take advantage of a new feature to record, edit, and replay in-flight data for auditing, invoke web services using WS-RM, and use asynchronous HTTP.
IBM Business Process Manager V7.5 maximizes re-use of IMS assets with new applications for rapid business innovation and reduced costs. It provides Visual Composition tools (IBM Integration Designer) and runtime (IBM Process Server), which together streamline process design hand-off between business and IT. With IBM Integration Designer IMS TM Resource Adapter Message Format Services (MFS) support, you can transform existing conversational and nonconversational MFS-based IMS applications into reusable components (services) that can be used to create a business process using Visual tools to comply with the standard Business Process Execution Language (BPEL). These processes can be deployed to run on the IBM Process Server and be integrated with other components into larger business processes.
IBM WebSphere Transformation Extender V8.4 includes the IMS 12 TM Resource Adapter to connect WebSphere Transformation Extender with IMS 11 and 12. IMS solutions can use WebSphere Transformation Extender maps to transform data. Maps that run in WebSphere Transformation Extender can interact with transactions that run on a host IMS system.
Ease management and extend scalability for ultra-high performance, capacity, availability, and recovery
Dynamic Resource Definition (DRD) enhancements
IMS Repository support for selected DRD resources (transaction, routing codes, program directories, database directories, and descriptors for these) provides a single centralized store for resource definitions in an IMSplex. The IMS Repository simplifies the management of resource definitions, and eliminates the need for manual import and the multiple Resource Definition Data Sets (RDDS) for each IMS.
All IMS systems in the IMSplex share the same IMS repository for their resource definitions. These IMS systems may be cloned or noncloned. The IMS repository allows users to maintain different attributes for the same resource name for each IMS in the IMSplex. Usage of the IMS Repository is optional. A new Repository Server (RS) address space is provided to manage the IMS Repository, and new commands and batch interfaces are provided to manage this new address space.
New IMS and Resource Manager (RM) type-2 commands are added and enhanced to manage the resource definitions in the IMS repository and also to manage the usage of the repository. The IMS IMPORT, EXPORT, and QUERY commands are modified to support the IMS repository. A new IMS DELETE DEFN command is added to delete resource definitions from the IMS repository. The new RM commands UPDATE RM and QUERY RM are added to manage RM's usage of the repository. The IMS commands UPDATE IMS and QUERY IMS are enhanced to manage IMS usage of the repository. Batch Utilities are provided to access the IMS Repository through RM.
The IMS IMPORT command is enhanced to provide an update option for updating resources. Previously, the IMPORT command could only be used to add resources, and where the resource name might already be defined, the command would fail. The enhanced IMPORT command creates a runtime definition if one does not already exist and updates existing runtime definitions with new attributes. Database access must be stopped before the database definition is updated. This command imports resource and descriptor definitions from a Resource Definition Data Set (RDDS) or the IMS repository. This function enhances the usability of the IMS repository.
The TSO Single Point of Control (SPOC) Manage Resources application is enhanced to support the command changes added for the IMS Repository function and the UPDATE option of the IMPORT command.
Syntax Checker enhancements
Syntax Checker enhancements allow parameters to be displayed and saved in customer orders, and provide support for the IMS Repository Server. This simplifies the migration to IMS 12. The customer order support is being delivered through the IMS 12 Service process.
Member Online Change enhancement
Member Online Change (OLC) enhancement provides a new option that allows Member OLC to bring in only new or changed PSB members, and new DBD members specified in the INIT OLC command. This significantly improves performance where a large number of Application Control Block (ACB) members may exist in their ACB library.
Extended Address Volume (EAV) support
EAV support for non-VSAM data sets allows IMS customers to take advantage of the EAV for non-VSAM data set type on the DS8000®, and new SMS function supported in z/OS V1.12, providing disk storage constraint relief. EAV support enables customers with additional disk addressable storage by having the option to use larger EAVs. This support allows IMS Full Function OSAM databases, online reorganization (OLR) data sets, online log data sets (OLDS), log write-ahead data sets (WADS), and IMS spool data sets to reside on these large volumes. This helps provide relief to customers running out of z/OS addressable disk storage due to the four-digit device number limit (65,280 devices) as these volumes contain more than 65,521 cylinders.
Logger enhancements allow the use of striped extended format online log data sets (OLDS) to increase logging bandwidth, add an option to move IMS log buffer storage above the 2 gigabyte boundary, and simplify write-ahead data set (WADS) size calculation.
Log record enhancements
CPU usage statistics for workloads operating on System z Application Assist Processors (zAAP) and System z Integrated Information Processors (zIIP) capture usage time from IMS applications in the 56FA and 07 log records and separate the zAAP/zIIP time from the time on standard central processors (CP). This allows for more precise statistics regarding workloads that have been offloaded to a zAAP/zIIP.
DB Recovery Control (DBRC) enhancements
Improved DBRC capacity, reliability, availability, serviceability, and usability, including:
Full Function (FF) DB enhancements
Full Function dynamic buffer pools are enhanced to provide a dynamic way for managing Full Function database buffer pools. As transaction volume grows, the number of I/Os would be increased. But if the buffer pool size is increased, less I/Os are needed. Without this, a system outage would be required to pick up the change of the modified buffer pools. This enhancement provides a way to dynamically add, change, and delete the OSAM and VSAM buffer pools without taking the system down. Online commands are provided for doing this. The VSAM shared resource pool id limit is also raised from 16 to 255 maximum VSAM shared buffer pools, providing constraint relief. This increases the VSAM buffer pool limit to improve the segregation of buffers across multiple databases. The increase in VSAM shared buffer pools makes it possible for more databases and applications to grow. This could eliminate systems downtime for buffer pool management and improves flexibility and system availability.
Storage for FF database pools is now obtained in 31-bit virtual, optionally backed by 64-bit real storage, for the DB work pool (DBWP), DMB pool (DLDP), PSB CSA pool (DLMP), DLI PSB pool (DPSB), and the PSB work pool (PSBW). Customers who page fix any of these pools and who have 64-bit real storage on their processor should see a reduction in 31-bit fixed real frames. Customers with large database pools who previously could not page fix them due to 31-bit real storage constraints may now be able to fix them, because the fixed pages will be backed in 64-bit real storage. This could improve the performance in the time it takes to manage PSBs in the pool under conditions such as casting out large PSBs that have not been referenced for a while and thus are paged out when the cast out occurs.
Additional FF DB enhancements:
Fast Path (FP) enhancements
FP Buffer Manager 64-bit enhancements are provided to improve performance and functionality. This frees up ECSA, self manages the subpools, and cleans up code clutter from cross-memory calls.
FP Secondary Index support provides the infrastructure to enable secondary indexing support for IMS FP data entry databases (DEDBs). This allows FP DEDBs to be accessed through secondary key sequence. IMS automatically performs index maintenance. Hierarchical indexed sequential access method (HISAM) and simple hierarchical indexed sequential access method (SHISAM) database structures are supported. When compared with an HDAM with the exact secondary indexing definitions, FP Secondary Index support requires significantly less CPU due to the efficient FP output thread process. Tools or utilities to build a secondary index database for DEDB databases exploiting this function could be separately offered by IBM or other vendors.
Additional FP enhancements ease usability and serviceability:
Process for eligible speciality engines
Request Response Processing for authorized Common Queue Server (CQS) clients in IMS 12 is executed under enclave service request blocks (SRBs). In IMS 12 and subsequent releases, IMS will request z/OS to process such work on an available System z Integrated Information Processor (zIIP). Request response processing is the processing of the return of data from the CQS address space to an authorized CQS client address space in response to a request the client directed to the CQS. Authorized CQS clients are those clients that register to IMS 12 CQS while executing in supervisor state and with a "system" Program Status Word (PSW) key (keys 0 through 7). Examples of IMS V12 operations that involve such authorized CQS clients, are:
Additional MIPS reduction enhancements
The IMS Database Resource Adapter (DRA) is enhanced to allow the Coordinated Controller (CCTL) to optionally run without DRA-attached Task Control Blocks (TCBs) and call IMS without switching off the application TCB. Threadsafe access between CICS® V4.2 and IMS is enabled to run on an open TCB. The CICS-DBCTL interface, used by CICS applications to access IMS databases, is enabled to run on L8 open TCBs. This provides benefits for applications that access IMS and which are already or can be made threadsafe. EXEC DLI and CALL DLI calls from CICS can now be made without any TCB switching overhead. This allows CPU savings and increased throughput.
CICS and ODBA users who perform security checking prior to calling IMS can now indicate through user exit DFSRAS00 that the user is trusted, allowing IMS to bypass unnecessary RACF or equivalent security checks, thus reducing MIPS usage.
Small internal changes also improve efficiency and potentially reduce instruction pathlength within the IMS system code. These changes include:
Additional serviceability enhancements
The /DIAGNOSE command enhancements provide a DISPLAY option for SNAP function output and a SHOW option to control the type and amount of data produced by the command. The introduction of an interactive method of diagnostic data capture will reduce the time and effort required to capture information for problem analysis, which in turn, will reduce the turnaround time for problem resolution.
IMS Dump Formatter now supports the Repository Server address space, any Repository Server client, and any OTMA Callable Interface client to allow for easier problem diagnosis and quicker problem resolution turnaround time.
EOM/EOT Tracing Facility now includes an End-of-Task (EOT) step trace function to trace and externally document the step-by-step flow through IMS EOT processing to provide diagnostic information needed to analyze and solve problems.
Module Alias Cross-Reference provides a complete module to alias cross-reference to help identify alias dependencies, providing an easy-to-use reference to help avoid potential errors caused by applying maintenance only to a module and not the module's alias.
Shared Queues Traceability enhancements help capture sufficient and valuable diagnostic data in order to help more quickly solve structure event problems. For this, a new structure event (STRE) trace table is created to maintain CQS structure events such as connecting, rebuilding, overflow, structure checkpoint, link failures, and so on.
The following additional items are separate products that provide additional management and scalability for IMS 11 and 12 users
IMS Solution Packs (IMS Database Solution Pack for z/OS, IMS Fast Path Solution Pack for z/OS, IMS Performance Solution Pack for z/OS, and IMS Recovery Solution Pack for z/OS) allow customers to extend their IMS investment by providing:
InfoSphere® Classic Change Data Capture for z/OS and InfoSphere IMS Replication for z/OS help clients synchronize and increase the availability of IMS data. These products deliver a native IMS-to-IMS software replication solution that supports high-availability IMS data environments, and enable unidirectional movement of IMS data to local or remote relational database management systems, message queues, flat files, or transformation engines, such as InfoSphere DataStage®. The result is fast and consistent delivery of business-critical IMS data changes to drive dynamic data warehousing, SOA initiatives, live reporting, data consolidation and migration projects, and master data management initiatives.
This solution also synchronizes the contents of IMS databases on a single site, or across geographically dispersed locations, in near real time with full recovery. When used with IBM management solutions, it also supports an IMS hot standby environment that can dramatically reduce the time to recovery for today's 24x7 processing environments.
OMEGAMON® XE for IMS on z/OS Interim Feature 3 provides a system programmer with the ability to detect and quickly identify looping and poor performing transactions that impact CPU utilization and service level agreements of the users and business applications of those IMS systems. This capability includes an improved Application Trace Facility (ATF) with usability enhancements as well as additional application metrics to enable customers to analyze the performance and operational characteristics of their applications.
Accessibility by people with disabilities
A US Section 508 Voluntary Product Accessibility Template (VPAT) containing details on accessibility compliance can be requested at
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IMS is IBM's premier transaction and hierarchical database management system. Exclusive to the z/OS platform, IMS 12 complements DB2®, CICS, and WebSphere servers for database and transaction management. Ongoing integration efforts mean that IMS can continue to add significant value to a multi-tier enterprise architecture.
IMS Database Manager (DB) is a hierarchical model; DB2, Oracle, and desktop systems use a relational model. Each database model continues to evolve with unique roles to play. Mission-critical processing that requires unparalleled performance is best served by a hierarchical model. Analytics and business intelligence are best served by a relational model. Most Fortune 100 companies use both.
Operational data is stored in hierarchical form and can be accessed easily by BI and analytics tools. IMS data can be accessed directly or propagated and replicated with relational data in support of BI. IBM provides standard application interfaces and drivers to access IMS as well as other data. Both relational data and hierarchical IMS data can be efficiently accessed, together or independently, using the IMS Transaction Manager and WebSphere servers.
IMS Transaction Manager (TM) is one of three strategic IBM application managers, with CICS and WebSphere Application Server. Each provides unique capabilities. IMS TM excels in application management, data storage, and data access and applies strict rules for this access. WebSphere applies simplified access rules, serving the web and integrating data that may be less defined. Enterprise clients use both application managers for specific purposes: IMS TM for mission-critical high-performance processing and WebSphere for web-based applications.
IMS, IBM Rational, and IBM WebSphere products continue to deliver new levels of tooling and integration. Enterprise clients can take advantage of Rational Developer for System z to maintain and enhance trusted IMS applications and develop web applications. Using the IMS DB Resource Adapter and IMS Open Database Access, WebSphere applications can also access IMS database data directly.
IBM continues to invest in new IMS features to help clients improve business efficiency and lower costs. Compared to previous IMS versions, some clients may achieve CPU savings for traditional and nontraditional workloads. Productivity improvements in IMS 12 for database and systems administrators can drive additional operational efficiencies and cost savings. Synergy with System z platform components can reduce CPU use by leveraging the latest processor improvements, larger amounts of memory, solid-state disk, and z/OS enhancements. IMS 12 delivers savings you can count on and is a great fit for your IT future.
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IBM Installation Services are provided for IMS by IBM Global Services or your IBM Business Partner at an additional cost. For additional information, contact your IBM representative and ask for Installation Services for IMS.
Additional technical services (planning and migration assistance, performance tuning, and other services) can be obtained through the Worldwide IMS Product Affinity Services team. For more information, contact the team at
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Program Program number VRM name 5635-A03 12.1.0 IMS Transaction and Database Servers
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Contact your IBM representative for course information. For additional information, visit
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Specified operating environment
Processors: IMS 12 operates on 64-bit IBM processors capable of running z/OS V1.11, or later, and supports the Long Displacement Facility of the z/Architecture.
Direct access devices: Both the binder work data set SYSUT1 (during the bind of the IMS VTAM control blocks load monitoring module) and IMS SDFSRESL must reside on a device that supports a record size of 18 KB, or higher.
IMS Database Image Copy 2 (IC2) utility (DFSDMT0) concurrent copy support requires concurrent copy-capable DASD controllers. IC2 Fast Replication support requires either the concurrent copy feature of DFSMS, the FlashCopy® feature of the IBM Enterprise Storage Server® (ESS), or the Snapshot feature of the IBM RAMAC Virtual Array (RVA) storage system. For all other system libraries and working storage space, any device supported by the operating system is allowed.
Additional line item requirement information and a list of supported terminals is provided in the IMS 12 Release Planning Information at
IMS 12 Transaction and Database Servers
IMS 12 operates under z/OS V1.11 configurations, or subsequent versions, releases, and modification levels, unless otherwise stated, and requires the following minimum version, release, or modification levels:
IMS 12 also operates in a virtual machine under control of z/OS V1.11 and is intended for use in a customer program development, testing, and non-XRF production environment, with some restrictions.
Additional line-item requirement information is provided in the IMS 12 Release Planning Information at
IMS 12 DB can be connected using the appropriate interface to IMS 12 TM (5635-A03), CICS Transaction Server for z/OS V3.1 (5655-M15), or later, WebSphere Application Server V6, or later, DB2 for z/OS V8 (5625-DB2), or later, and user-written software.
IMS 12 TM can be connected using the appropriate interface to IMS V10 TM (5635-A01), or later, IMS 12 DB (5635-A03), or later, CICS Transaction Server for z/OS V3.1 (5655-M15), or later, WebSphere Application Server V6, or later, DB2 for z/OS V8 (5625-DB2), or later, and user-written software.
The IMS ETO feature requires the IMS TM feature.
The IMS Remote Site Recovery (RSR) Record Level Tracking (RLT) feature requires either the IMS TM or the IMS DB feature.
The IMS RSR Database Level Tracking (DLT) feature requires the IMS RSR RLT and IMS DB features.
IMS 12 is written in High Level Assembler, PL/X, C, C++, and JDK Version 6.
IMS 12 continues to build on its tradition of high-performance, low-cost transaction processing by removing constraints and reducing pathlength while also taking advantage of new system functions.
IMS 12 Fast Path users can take advantage of additional 64-bit storage exploitation, thus reducing ECSA demand and allowing increased buffer growth to support additional workload.
When compared with a HDAM with the exact secondary indexing definitions, IMS 12 Fast Path Secondary Index support requires significantly less CPU due to the efficient Fast Path output thread process.
IMS 12 supports many more storage pools using 64-bit real storage, allowing the possibility of more pools being page fixed, reducing the overhead of short-term z/OS page fix and free.
Shared queues users should see increased benefit by the elimination of RRS overhead for many OTMA and APPC transactions processed on a backend IMS.
IMS 12 also provides the ability to dynamically change Full Function database buffer pool specifications without having to recycle IMS. This will provide the ability to tune the buffer pools to significant changes in workload, thus providing optimum performance.
IMS 12 provides several enhancements to reduce internal IMS pathlength, which may reduce overhead and thus cost per transaction. These enhancements are spread throughout the product where IMS was able to find improved methods to accomplish the same function more efficiently.
IMS 12 continues to demonstrate that it can provide the highest performance, lowest cost transaction performance with absolute integrity for both messages and database.
User group requirements
This announcement satisfies or partially satisfies requirements from one or more of the worldwide user group communities.
MR0208076041 - CM1 shared queues support without RRS, if synclevel=syncpoint is not used MR0324085832 - Online command output > 32K MR011306439 - Increase number of DBRC User Variables for GENJCL from 32 to 64 MR0103052840 - %DBDTYPE for ALLOC records MR0208011414 - INIT.CA VOLLIST/UNIT optional MR0525074029 - CA Retention Period (RECOVPD) MR0930043959 - Allow IMS buffer pool changes without taking the system down MR0214064617 - DFSVSAMP dynamic VSAM and OSAM pool allocation. MR062107511 - Increase the VSAM buffer poolid limit. MR1114073843 - Enhance DLI Batch to continue to function in the event of a Coupling Facility (CF) Switch MR0915061035 - Transaction msg deleted after a U3310 (LOCKTIME functionality improvement) MR0505053431 - Messages for loading and unloading of HDAM randomizers MR1014024359 - Improve Error Reporting for OSAM Database Open causing abend U0080 MR0328057223 - MSGDFS993 may not be visible MR0808062254 - New message to help in diagnosis of U3303 MR0126094621 - EPCB pool ECSA relief MR0321063956 - HSRE to use 64 bit buffers MR0211093445 - SVSO into 64 bit MR1117061552 - Identify failing IMS name for FP type-3 notifies MR0919084327 - Option to reduce type 99 logging MR0225082435 - DEDB full segment logging MR00040063 - Fast Path Indexed File Structure MR061401240 - Provide utility/facility for Fast Path Secondary indexes MR0915052513 - Include reason codes in the RACF SECFAIL message MR0227036139 - Pass the SAF and RACF reason and return codes associated with security failures to the client MR0915001558 - Passing RACF Return code and Reason code MR0719026950 - Return to the application program the correct security failure return code and reason code MR0115023935 - Be able to determine between password wrong and userid revoked MR0529085825 - Modify Command to reread COBOL converter routines MR0612073629 - Provide for dynamic refresh of IMS SOAP COBOL drivers MR102908498 - IMS Connect CM0 AckNoWait for RYO applications MR1219005228 - ACEE refresh capability in IMS Connect MR0729086038 - Provide load for most required exits MR0619074259 - IMS Connect Server to Server function MR0306077155 - IMS/Connect commands not standardized and so not enabled to OM/SPOC MR1121073318 - Only one RACF ACEE , valid for all OTMA tmember in an IMS control region MR1008093753 - IMS WebSphere Resource adapter able to set the IMS OTMA Transaction Expiration time MR0114086422 - IMS MPP/BMP Java Support - launch JVM in MPP MR1215063039 - IMS x"99" log field addition in DLIBATCH MR0309071620 - Diagnostic message for a U3310 MR220065133 - LOCKTIME Discarding transactions MR0324114722 - Need Transaction statistics for CPU time spent on zIIP/zAAP workload MR0423103213 - IMS Security exit DFSRAS00 not called during CCTL connection MR0802054229 - Threadsafe IMS in CICS MR0310101530 - Automatic Reconnect between IMS TM RA and IMS Connect MR0818106253 - New IMS TM RA Informational message MR0818104559 - Remove WebSphere runtime dependency for IMS TM RA MR0716106916 - IMS TM RA should support JBOSS application server MR081810167 - SetRetryLimit in IMS ActivationSpec value 0 meaning MR0622114521 - Multiple datastore support for IMS Callout with MDB and IMS TM RA MR1106023829 - Display IMS PROClib member parameters in custom order MR1006085712 - RASRACF Specification Option for BMP Schedule MR0513082049 - Prevent Unauthorized Jobs or Started Tasks from starting as Dependent Regions MR0603112241 - Option to Print JAVAOUT and JAVAERR in the IMS regions joblog
Security, auditability, and control
The announced program uses the security and auditability features of the host hardware or operating system software. The customer is responsible for evaluation, selection, and implementation of security features, administrative procedures, and appropriate controls in application systems and communication facilities.
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The following publications are available from the IBM Publications Center at
The following softcopy publications are also available in the IBM Information Management Software for z/OS Solutions Information Center at
Title Order number IMS Version 12 Application Programming SC19-3007 IMS Version 12 Application Programming APIs SC19-3008 IMS Version 12 Commands, Volume 1: SC19-3009 IMS Commands A-M IMS Version 12 Commands, Volume 2: SC19-3010 IMS Commands N-V IMS Version 12 Commands, Volume 3: SC19-3011 IMS Component and z/OS Commands IMS Version 12 Communications and Connections SC19-3012 IMS Version 12 Database Administration SC19-3013 IMS Version 12 Database Utilities SC19-3014 IMS Version 12 Diagnosis GC19-3015 MS Version 12 Exit Routines SC19-3016 IMS Version 12 Installation GC19-3017 MS Version 12 License Programming Specifications GC19-3024 IMS Version 12 Messages and Codes, Volume 1: GC18-9712 DFS Messages IMS Version 12 Messages and Codes, Volume 2: GC18-9713 Non-DFS Messages IMS Version 12 Messages and Codes, Volume 3: GC19-9714 IMS Abend Codes IMS Version 12 Messages and Codes, Volume 4: GC19-9715 IMS Component Codes IMS Version 12 Operations and Automation SC19-3018 IMS Version 12 Program Directory GI10-8843 IMS Version 12 Release Planning GC19-3019 IMS Version 12 System Administration SC19-3020 IMS Version 12 System Definitions GC19-3021 IMS Version 12 System Programming APIs SC19-3022 IMS Version 12 System Utilities SC19-3023 IMS Version 12 Product Kit (CD) SK5T-7394
The following IMS Redbooks® are available now from Mechanicsburg or at
Title Order number IMS 12 Technical Overview SG24-7972 IMS 11 Open Database SG24-7856 IMS V11 Technical Overview SG24-7807 Powering SOA Solutions with IMS SG24-7662 IMS V10 Implementation Guide: A Technical Overview SG24-7526 Powering SOA with IBM Data Servers SG24-7259 IMS Performance and Tuning Guide SG24-7324 Publishing IMS and DB2 Data Using WebSphere SG24-7132 Information Integrator: Configuration and Monitoring Guide IMS Connectivity in an On Demand Environment: SG24-6794 A Practical Guide to IMS Connectivity IMS V9 Implementation Guide: A Technical Overview SG24-6398 IMS V8 Implementation Guide: A Technical SG24-6594 Introduction of the New Features Reorganizing Databases Using IMS Tools: A Detailed SG24-6074 Look at the IBM IMS High Performance Tools IMS Installation and Maintenance Processes SG24-6574 Using IMS Data Management Tools for Fast Path SG24-6866 Databases IMS in the Parallel Sysplex® Volume I: Reviewing SG24-6908 the IMSplex Technology IMS in the Parallel Sysplex Volume II: Planning SG24-6928 the IMSplex IMS in the Parallel Sysplex Volume III: IMSplex SG24-6929 Implementation and Operations The Complete IMS HALDB Guide, All You Need to Know SG24-6945 to Manage HALDBs
The following materials are available in PDF or HTML format and may be obtained at the Library link through
Title IMS 12 IMS - Fit for the Future IMS SOA Support and the IMS Enterprise Suite IMS Presentations and White papers on SOA, XML, Performance, Connectivity, and other IMS topics
The following book is available from IBM Press:
Title An Introduction to IMS
For details, visit
Ordering z/OS through the Internet
ShopzSeries provides an easy way to plan and order your z/OS ServerPac or CBPDO. It will analyze your current installation, determine the correct product migration, and present your new configuration based on z/OS. Additional products can also be added to your order (including determination of whether all product requisites are satisfied). ShopzSeries is available in the US, Canada, and several countries in Europe. In countries where ShopzSeries is not available yet, contact your IBM representative (or IBM Business Partner) to handle your order via the traditional IBM ordering process. For more details and availability, visit the ShopzSeries website at
Orders for new licenses can be placed now.
Registered customers can access IBMLink for ordering information and charges.
Shipment will not occur before the availability date.
Unless a later date is specified, orders entered before the planned availability date will be assigned a schedule date of one week following availability.
Unless a later date is specified, an order is scheduled for the week following order entry.
New users of IMS 12 should specify:
Type: 5635 Model: A03
CFSW configuration and order entry capability are available.
Advanced Entry Workload License Charges (AEWLC) basic license
Along with the announcement of the IBM zEnterprise 114 (z114) server, IBM introduces a new software pricing structure called Advanced Entry Workload License Charges (AEWLC). The AEWLC pricing metric leverages the reporting mechanisms and existing Millions of Service Units per hour (MSU) tiers of the Entry Workload License Charges (EWLC) pricing metric and the Midrange Workload License Charges (MWLC) pricing metric while extending the software price/performance provided by EWLC and MWLC. AEWLC applies only to eligible z/OS, z/TPF, and z/VSE® operating systems and their associated middleware programs when running on a z114 server. For details, refer to Software Announcement ZP11-0311, dated July 12, 2011.
Advanced Entry Workload License Charges (AEWLC) basic license:
To order a basic license, specify the program number and quantity of MSU.
Program name: Information Management System Version 12 Transaction and Database Servers Program PID: 5635-A03 Entitlement License option/ identifier Description Pricing metric S0166J4 IMS Database Manager Basic MLC, AEWLC S0166J5 IMS DB-Level Tracking Basic MLC, AEWLC S0166J1 IMS Extended Term Opt Basic MLC, AEWLC S0166J2 IMS Recov Lvl Tracking Basic MLC, AEWLC S0166J3 IMS Transaction Manager Basic MLC, AEWLC
Advanced Workload License Charges (AWLC) basic license
Along with the announcement of the IBM zEnterprise 196 (z196) server, IBM introduced a new software pricing structure called Advanced Workload License Charges (AWLC). The AWLC pricing metric leverages the reporting mechanisms and existing Millions of Service Units (MSU) per hour tiers of the Variable Workload License Charges (VWLC) pricing model while extending the software price/performance provided by the VWLC tiers. AWLC applies only to eligible z/OS and z/TPF software programs and their associated middleware programs when running on a z196 server. For details, refer to Software Announcement ZP10-0307, dated July 22, 2010.
Advanced Workload License Charges (AWLC) basic license:
To order a basic license, specify the program number and quantity of MSU.
Program name: Information Management System Version 12 Transaction and Database Servers Program PID: 5635-A03 Entitlement License option/ identifier Description Pricing metric S0166J4 IMS Database Manager Basic MLC, AWLC S0166J5 IMS DB-Level Tracking Basic MLC, AWLC S0166J1 IMS Extended Term Opt Basic MLC, AWLC S0166J2 IMS Recov Lvl Tracking Basic MLC, AWLC S0166J3 IMS Transaction Manager Basic MLC, AWLC
Parallel Sysplex license charge (PSLC) basic license
To order a basic license, specify the program number and quantity of MSU.
If there is more than one program copy in a Parallel Sysplex, the charge for all copies is associated to one license by specifying the applicable PSLC license options and quantity represented by the sum of the Service Units in Millions (MSUs) in your Parallel Sysplex. For all other program copies, specify the System Usage Registration No-Charge (SYSUSGREG NC) Identifier on the licenses.
Program name: Information Management System Version 12 Transaction and Database Servers Program PID: 5635-A03 Entitlement License option/ identifier Description Pricing metric S0166J4 IMS Database Manager Basic MLC, PSLC(ABCD) S0166J5 IMS DB-Level Tracking Basic MLC, PSLC(ABCD) S0166J1 IMS Extended Term Opt Basic MLC, PSLC(ABCD) S0166J2 IMS Recov Lvl Tracking Basic MLC, PSLC(ABCD) S0166J3 IMS Transaction Manager Basic MLC, PSLC(ABCD)
Workload License Charge (WLC) Basic License
If there is more than one program copy in a Parallel Sysplex, the charge for all copies is associated to one license by specifying the applicable WLC license options and quantity represented by the sum of the Service Units in Millions (MSUs) in your Parallel Sysplex. For all other program copies, specify the Workload Registration Variable WLC Identifier on the licenses.
Program name: Information Management System Version 12 Transaction and Database Servers Program PID: 5635-A03 Entitlement License option/ identifier Description Pricing metric S0166J4 IMS Database Manager Basic MLC, V-WLC S0166J5 IMS DB-Level Tracking Basic MLC, V-WLC S0166J1 IMS Extended Term Opt Basic MLC, V-WLC S0166J2 IMS Recov Lvl Tracking Basic MLC, V-WLC S0166J3 IMS Transaction Manager Basic MLC, V-WLC
Entry Workload License Charge (EWLC) Basic License
To order a basic license, specify the program number and the quantity of MSUs.
Program name: Information Management System Version 12 Transaction and Database Servers Program PID: 5635-A03 Entitlement License option/ identifier Description Pricing metric S0166J4 IMS Database Manager Basic MLC, Entry WLC S0166J5 IMS DB-Level Tracking Basic MLC, Entry WLC S0166J1 IMS Extended Term Opt Basic MLC, Entry WLC S0166J2 IMS Recov Lvl Tracking Basic MLC, Entry WLC S0166J3 IMS Transaction Manager Basic MLC, Entry WLC
S/390® and System z Usage License Charge, basic license:
Specify the applicable S/390 and System z Usage License Charge option.
Charges will be based upon the Peak MSUs. Usage reported between thresholds of features 1, 2, or 3, will be rounded up to the next MSU level. Above 1.0 MSU, usage will be rounded to the nearest whole MSU. For example, 2.4 MSUs would round to 2.0 MSUs for pricing, and 2.5 MSUs would round to 3.0 MSUs for pricing.
Program name: Information Management System Version 12 Transaction and Database Servers Program PID: 5635-A03 Entitlement License option/ identifier Description Pricing metric S0166J4 IMS Database Manager Basic MLC, ULC(ABCD) S0166J5 IMS DB-Level Tracking Basic MLC, ULC(ABCD) S0166J1 IMS Extended Term Opt Basic MLC, ULC(ABCD) S0166J2 IMS Recov Lvl Tracking Basic MLC, ULC(ABCD) S0166J3 IMS Transaction Manager Basic MLC, ULC(ABCD)
Growth opportunity license charge (GOLC)
To order a basic license, specify the program number and the correct level.
Specify the GOLC monthly license option. Program name: Information Management System Version 12 Transaction and Database Servers Program PID: 5635-A03 Entitlement License option/ identifier Description Pricing metric S0166J4 IMS Database Manager Basic MLC, GOLC S0166J5 IMS DB-Level Tracking Basic MLC, GOLC S0166J1 IMS Extended Term Opt Basic MLC, GOLC S0166J2 IMS Recov Lvl Tracking Basic MLC, GOLC S0166J3 IMS Transaction Manager Basic MLC, GOLC
System z entry license charge (zELC)
To order zELC software, specify the program number and z800 model.
Specify the zELC monthly license option. Program name: Information Management System Version 12 Transaction and Database Servers Program PID: 5635-A03 Entitlement License option/ identifier Description Pricing metric S0166J4 IMS Database Manager Basic MLC, zELC S0166J5 IMS DB-Level Tracking Basic MLC, zELC S0166J1 IMS Extended Term Opt Basic MLC, zELC S0166J2 IMS Recov Lvl Tracking Basic MLC, zELC S0166J3 IMS Transaction Manager Basic MLC, zELC
Basic machine-readable material
Orderable supply ID Language Distribution medium Description S016T7S English 3590 Tape Cartridge IMS V12 Database Manager ENU S016T82 English 3590 Tape Cartridge IMS V12 Transaction Manager ENU S016T7X English 3590 Tape Cartridge IMS V12 Recovery Level Tracking(RLT) - Remote Site Recovery ENU S016T80 English 3590 Tape Cartridge IMS V12 Extended Terminal Option (ETO), ENU S016T7V English 3590 Tape Cartridge IMS V12 OPTSRC SV ENU S016T83 English 3590 Tape Cartridge IMS V12 DB-Level Tracking (DLT) - Remote Site Recovery ENU
A memo and one copy of the following publications are supplied automatically with the basic machine-readable material:
All the IMS product information is available in the Information Center at
The IMS product does not have any licensed publications.
Subsequent updates (technical newsletters or revisions between releases) to the publications shipped with the product will be distributed to the user of record for as long as a license for this software remains in effect. A separate publication order or subscription is not needed.
Product deliverables are shipped only via CBPDO, ServerPac, and SystemPac®.
CBPDO and ServerPac are offered for Internet delivery in countries where ShopzSeries product ordering is available. Internet delivery reduces software delivery time and allows you to install software without the need to handle tapes. For more details on Internet delivery, refer to the ShopzSeries help information at
You choose the delivery method when you order the software. IBM recommends Internet delivery. In addition to Internet and DVD, the supported tape delivery options for CBPDO, ServerPac, and SystemPac include:
Most products can be ordered in ServerPac and SystemPac the month following their availability on CBPDO. z/OS can be ordered via all three offerings at general availability. Production of software product orders will begin on the planned general availability date.
Global Technology Services
Contact your IBM representative for the list of selected services available in your country, either as standard or customized offerings for the efficient installation, implementation, and integration of this product.
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Indexed monthly license charge (IMLC) applies
Location license applies
Use limitation applies
Educational allowance available
Yes, 15% education allowance applies to qualified education institution customers.
Yes, to qualified customers.
Replaced programs Replacement programs Program Program Program Program number name number name 5655-B01 IMS V7 5635-A03 IMS V12 5655-C56 IMS V8 5635-A03 IMS V12 5655-J38 IMS V9 5635-A03 IMS V12 5635-A01 IMS V10 5635-A03 IMS V12 5635-A02 IMS V11 5635-A03 IMS V12 5635-A03 IMS V12 Follow-on if any
Licensed program materials availability
Restricted Materials of IBM: None Non-Restricted Source Materials: Some Object Code Only (OCO): Some
Support Center applies: Yes Access is available through the IBM Support Center Available until discontinued: 12 months' written notice APAR Mailing Address: IBM Corporation 555 Bailey Avenue San Jose, CA 95141
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IBM has transformed its delivery of hardware and software support services to help you achieve higher system availability. Electronic Services is a Web-enabled solution that offers an exclusive, no-additional-charge enhancement to the service and support available for IBM servers. These services are designed to provide the opportunity for greater system availability with faster problem resolution and preemptive monitoring. Electronic Services comprises two separate, but complementary, elements: Electronic Services news page and Electronic Services Agent.
The Electronic Services news page is a single Internet entry point that replaces the multiple entry points traditionally used to access IBM Internet services and support. The news page enables you to gain easier access to IBM resources for assistance in resolving technical problems.
The Electronic Service Agent is no-additional-charge software that resides on your server. It monitors events and transmits system inventory information to IBM on a periodic, client-defined timetable. The Electronic Service Agent automatically reports hardware problems to IBM. Early knowledge about potential problems enables IBM to deliver proactive service that may result in higher system availability and performance. In addition, information collected through the Service Agent is made available to IBM service support representatives when they help answer your questions or diagnose problems. Installation and use of IBM Electronic Service Agent for problem reporting enables IBM to provide better support and service for your IBM server.
To learn how Electronic Services can work for you, visit
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For all local charges, contact your IBM representative.
IBM Global Financing
IBM Global Financing offers competitive financing to credit-qualified customers to assist them in acquiring IT solutions. Offerings include financing for IT acquisition, including hardware, software, and services, from both IBM and other manufacturers or vendors. Offerings (for all customer segments: small, medium, and large enterprise), rates, terms, and availability can vary by country. Contact your local IBM Global Financing organization or visit
IBM Global Financing offerings are provided through IBM Credit LLC in the United States, and other IBM subsidiaries and divisions worldwide to qualified commercial and government customers. Rates are based on a customer's credit rating, financing terms, offering type, equipment type, and options, and may vary by country. Other restrictions may apply. Rates and offerings are subject to change, extension, or withdrawal without notice.
Financing offering and capabilities:
Financing from IBM Global Financing helps you preserve cash and credit lines, enables more technology acquisition within current budget limits, permits accelerated implementation of economically attractive new technologies, offers payment and term flexibility, and can help match project costs to projected benefits. Financing is available worldwide for credit-qualified customers.
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All European, Middle Eastern, and African countries except Iran, Sudan, and Syria.
IMS, zEnterprise and Electronic Service Agent are trademarks of IBM Corporation in the United States, other countries, or both.
IBM, System z, z/OS, z/Architecture, VTAM, RACF, WebSphere, Cognos, Rational, DS8000, CICS, InfoSphere, DataStage, OMEGAMON, DB2, DataPower, FlashCopy, Enterprise Storage Server, BookManager, Redbooks, Parallel Sysplex, z/VSE, S/390 and SystemPac are registered trademarks of IBM Corporation in the United States, other countries, or both.
Windows is a trademark of Microsoft Corporation in the United States, other countries, or both.
Other company, product, and service names may be trademarks or service marks of others.
For the most current information regarding IBM products, consult your IBM representative or reseller, or visit the IBM worldwide contacts page