IMS Online Reorganization Facility provides all of the necessary reorganization procedures (unload, reload, prefix resolution, prefix update, secondary index building, and image copy) in one simple step. It also provides optional pointer checking and ACB or DMB replacements.
IMS Online Reorganization Facility for z/OS:
Enables reorganization of IMS full function and High Availability Large Databases (HALDB) databases with an outage of only seconds (a period of time called takeover time).
Reorganizes databases to shadow data sets, captures any changes that occur during this period, and applies these changes to the reorganized shadow data sets.
Requires databases and their data sets to be registered to DBRC.
Reorganizes HISAM, HIDAM, HDAM, and SHISAM databases and recreates associated index data sets.
Reorganizes PHIDAM and PHDAM databases as single partitions.
Makes selected DBD changes during the reorganization process which will automatically be propagated to the participating online systems without the need of launching an online change.
Allows predefinition of the period when takeover may occur.
Supports batch message processing programs (BMPs) that allow you to pause BMPs during /DBRECOVERY commands.
Supports CICS & OTMA applications that quiesce database access during /DBRECOVERY commands.
Provides reorganization of all HALDB partitions in single job step as well as support for HALDBs with internal logical relationships.
Contains the ability to reorganize just an index (including PSINDEX) database while it remains online and the ability to unload a database while it is being updated online.