Starting or restarting IMS

Starting or restarting an IMS subsystem means initializing the IMS control region. You must first restore the operating environment and the master terminal operator must insure that critical applications, such as any dependent regions, are initialized.

To restore the operating environment, the MTO must ensure the following are also initialized:

  • All IRLMs
  • All CQSs
  • Any dependent regions (including utilities)
  • All CSL address spaces (ODBM, OM, RM, and SCI), if operating as an IMSplex using CSL
  • Any connections to VTAM®
  • All communication lines and terminals

The term MTO used in this information refers to the IMS master terminal operator for the DB/DC and DCCTL environments, and to the operator for the DBCTL environment. All commands shown assume that the command-recognition character is the forward slash (/).