Micro Focus Enterprise Test Server 2.3 Update 2 > Mainframe Support for Deployed Applications > MSS Configuration and Administration > IMS Support > IMS Database Administration > IMS Database Recovery > IMS Batch Backout > Recovering Database Changes with the Batch Backout Utility > Using Checkpoints with Batch Backout

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:

//BACKOUT EXEC PGM=MFDBUJCL,PARM='BBO'

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

  //SYSIN   DD *
  CHKPT CHECK001 
  /*

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.