IMS Utility Programs

IMS includes many utility programs to help you run, fine tune, and monitor IMS. These utilities help you:

• Generate and maintain IMS system control blocks

• Make online changes to the IMS system

• Allocate, monitor, and recover the IMS log data sets

• Analyze system performance

• Generate and maintain the Message Format Service (MFS)

• Maintain multiple IMS systems

• Maintain time-controlled operations

• Define, maintain, recover, and reorganize^[1] databases

  ^[1] To reorganize a database is to unload and reload a database to optimize physical segment adjacency or to modify the database definition (DBD).

• Make backup copies of databases

Some of the IMS utilities are discussed in the context of performing tasks in the following sections:

• "Overview of the Database Reorganization Process" on page 128

• Chapter 21, "IMS Security," on page 361

• "Archiving an OLDS" on page 370

• "Using IMS System Log Utilities" on page 406

• "Running Recovery-Related Utilities" on page 421

Related Reading: For information about all of the IMS utilities, see:

• IMS Version 9: Utilities Reference: Database and Transaction Manager

• IMS Version 9: Utilities Reference: System