Shutting down IMS

This approach is a common sequence for shutting down the entire online system.

Procedure

  1. Stop communications based on your IMS environment.
    Option Description
    Stop data communications For an IMS DB/DC or DCCTL environment
    Disconnect from the CCTL For an IMS DBCTL environment
  2. Stop dependent regions.
  3. Stop MSC links.
  4. Stop OTMA.
  5. Stop the control region.
  6. For an IMS DB/DC or DBCTL environment, stop the IRLM.
  7. For a shared-queues environment, if CQS has not shut down, shut it down.
  8. For an IMSplex system using CSL, shut down the CSL manager address spaces (OM, RM, repository server and SCI).

The command used to shut down the control region also forces termination of data communications and the dependent regions if they have not already been terminated in an orderly way, and can also tell the CQS subsystem to shut down.