Using Checkpoints with Batch Backout

Database updates can be rolled back either for the entire batch job or back to a specific checkpoint ID. The backout functionality is implemented in the MFDBUJCL IMS Database Utility JCL interface. You specify PARM='BBO' to activate batch backout. For example:


If restarting from a checkpoint, the checkpoint ID is specified in the SYSIN DD, for example:

  //SYSIN   DD *

Checkpoint options are listed in the table below.

CHKPT Keyword Behavior
LAST Default. Restores to the point of the last successful checkpoint call.
ALL Backs out all checkpoints.
checkpoint id Restores to the checkpoint specified. This id is limited to eight characters.