IMS Index Builder functions

For any supported hierarchical direct (HD) and HISAM databases, IMS™ Index Builder scans the existing physical database and rebuilds IMS secondary indexes or creates one or more new secondary index databases. This process removes the need for a full database reorganization.

Creating secondary indexes
Use IMS Index Builder to create new secondary indexes without a full reorganization of the physical database.
Building a HIDAM primary index
When the primary index of a HIDAM database has been broken, you can use IMS Index Builder to rebuild it by scanning the prime database or partition, if HALDB.
Building PHIDAM partition primary indexes
PHIDAM HALDB partition primary indexes are rebuilt the same way a HIDAM index is built for all partitions or for selected partitions.
Building HALDB partition ILDS
PHIDAM HALDB partition ILDSs are rebuilt in an analogous way as building primary indexes. ILDS of all or selected partitions can be rebuilt.
Building indexes and ILDSs for IMS catalog databases
IMS Index Builder treats an IMS catalog database as a PHIDAM database. Primary indexes, secondary indexes, and indirect list data sets (ILDSs) for IMS catalog databases are rebuilt the same way PHIDAM indexes are built.
Selecting the scan method
IMS Index Builder provides a sequential scan technology for building primary, secondary, and ILDS indexes, and this sequential scan technology is used as the default scan method. However, you can change the scan method to apply the scan method that was used in IMS Index Builder Version 2.3.
Issuing the IMS commands automatically
By using the IMS Tools Online System Interface, IMS Index Builder can issue IMS commands (/DBD, /DBR, and /STA) automatically. The /DBD and /DBR commands prevent transactions or programs from updating the databases while the indexes are built. The /STA command restarts the databases after the indexes are built.
Using the IMS catalog
IMS Index Builder can build IMS catalog databases. It can also retrieve database information from IMS catalog instead of DBD libraries.

Parent topic: Using IMS Index Builder