Updates to IMS Recovery Solution Pack: IMS High Performance Change Accumulation Utility V1.1 User's Guide
Updates that apply to IMS Recovery Solution Pack: IMS High Performance Change Accumulation Utility V1.1 User's Guide (SC19-2905-00).
The most recent updates appear at the top of the list.
Date of change: March 20, 2012
Topics: Chapter 8. Creating and converting JCL -> Modifying skeletal JCL members
Change description: Updated information for log data sets on tape devices and DASD.
|Modifying skeletal JCL members
IMS HP Change Accumulation Utility analyzes the output from GENJCL and creates multiple job procedures to run in parallel, one for each selected CA group.
Because multiple tasks are created to read the log data sets, the demand on the number of tape device units can exceed the number of available devices. Unnecessary waits would result until a tape device does become available.
The global parameter INLIM allows you to limit the number of log reader tasks that read log data sets in parallel. This parameter also limits the number of tape devices IMS HP Change Accumulation Utility uses.
However, before starting the change accumulation process, DBRC checks the availability of all log data sets and requires that the data sets and their devices be available even though the log read is done in a different address space.
IMS HP Change Accumulation Utility processing modifies the JCL to defer the mounting of tapes while DBRC is performing its checks. Also, to reduce the requirement for devices, you will need to modify your skeletal JCL member as follows:
When the standard procedure method is used for JCL processing, additional skeletal JCL changes must be considered.
1. JES symbols (&name) are not processed.
The JCL is processed to dynamic allocation format which does not accept & symbols. DBRC symbols (%name) are accepted.
Other steps from the skeletal JCL are ignored.
Date of change: April 27, 2011
Topics: Chapters 9, 13, and 15.
Change description: Added information to not enclose the timestamp in quotes or any other special notation.
|Chapter 9. IMS HP Change Accumulation Utility JCL parameters -> Operation statements
LOG TIME=YES|time stamp
Requests point-in-time accumulation processing and optionally defines the log-ending time stamp. If a time stamp value is used, it identifies a stopping position within the time period that represents the set of input logs.
To run point-in-time to the last input log, set LOG TIME=YES.
To run point-in-time to a specified time, set LOG TIME=time stamp. The time stamp value is entered in the standard IMS external time stamp format. Offset labels are not acceptable (for example, PST).
|Chapter 13. IMS HP Change Accumulation Utility special features and functions -> IMS HP Change Accumulation Utility PITCA time stamps
IMS HP Change Accumulation Utility PITCA time stamps
All events are recorded in the RECON with a time stamp. The time stamp is used for command processing, database utility processing, and recovery processing that references the RECON.
The standard punctuated time stamp format is described in detail in the IMS DBRC Guide and Reference. The punctuated forms are supported but exclude labeled offset values.
You can identify the log record time stamp to the microsecond for the IMS™ Record Format and Print Module (DFSERA30) or for any utility that enables log record analysis.
Important: PITCA filtering is based on the converted UTC time stamp and not the local time stamp.
|Chapter 15. IMS HP Change Accumulation Utility messages -> HPC1209E
HPC1209E Timestamp invalid. Reason code diagcd.
The format of the point-in-time timestamp is not a valid IMS™ external timestamp. Timestamp formats are described in the IMS DBRC Guide and Reference. Message DSP0304I in the IMS Messages and Codes manual describes the values for diagcd.
Date of change: February 4, 2011
Topics: Chapter 9. IMS HP Change Accumulation Utility JCL parameters -> Operation statements -> GENJCL definitions
Change description: The GEN.RETRY option is modified to remove the restriction on no standard procedures (STDPROC) mode; message HPC1352E is updated to remove the STDPROC text as a valid format of the message.
Specifies the number of times IMS HP Change Accumulation Utility will reprocess GENJCL for CAGRPs that cannot be accumulated because of the purge time validation error.
Valid only for the extended batch environment.
The following restrictions apply:
GEN.RETRY Status: Reset – VOLNUM | SAS | PIT
IMS™ HP Change Accumulation Utility has detected a restriction for the GEN.RETRY command and the current status has been reset to disabled. Refer to the IMS High Performance Change Accumulation Utility for z/OS® User's Guide for more details on the restrictions for GEN.RETRY: VOLNUM | SAS (single address space) | PIT (point-in-time)
Remove the restriction and resubmit IMS HP Change Accumulation Utility.
Date of change: December 3, 2010
Topics: Chapter 15. IMS HPCA messages
Change description: Added new messages HPC4053E and HPC4054E.
|HPC4053E CA Output Master suffix .HPCAP RESERVED for PIT
More support for:
IMS Recovery Solution Pack: IMS High Performance Change Accumulation Utility
Software version: 1.1.0
Operating system(s): z/OS
Reference #: 7020509
Modified date: 2011-04-27