IMS System Services

IMS System Services provide the following services to both IMS DB and IMS TM:

• Provide data integrity

• Restart and recover IMS after failures

• Provide security, by controlling access to and modification of IMS resources

• Manage the application programs, by dispatching work, loading application programs, and providing locking services

• Provide diagnostic and performance information

• Provide facilities for operating IMS

• Provide interfaces to other z/OS subsystems that communicate with IMS applications

The IMS System Services are, by:

• Issuing IMS commands

• Running IMS-supplied utility programs

• Running IMS-supplied or user-written exit routines

• Defining the services you want as part of the system definition process