IMS service considerations

Proper planning for implementing service to IMS is a vital part of keeping IMS available and resilient.

Types of service SMP/E SYSMODs
IMS provides maintenance packaged in SMP/E format.
Service SYSMOD packaging
The IMS service process typically makes APARs available as soon as they are completed, which is normally a few weeks before the corresponding PTF or PTFs are completed. In situations in which a fix is urgently needed after the APAR is completed, but before the PTF is available, using the APAR might be the best short-term solution.
Obtaining IMS service
The recommended way to obtain IMS service is to order a Recommended Service Upgrade (RSU), which includes all current PTFs that have passed the Consolidated Service Test (CST).
Maintenance recommendations
The recommendations outlined in the following topics can help you develop a maintenance strategy that works in your environment.
Installing IMS service on a single system
IMS service can be installed in several ways, including SMP/E methods.
Installing IMS service in an IMSplex
Installing IMS service in an IMSplex is similar to installing service on a single system.
Common installation and maintenance issues
You can have a more stable IMS environment by being aware of some of the common installation and maintenance issues that are presented in these topics and taking appropriate action.

Parent topic: IMS system administration considerations and tasks