Restart of BMP regions

If the application program uses the IMS restart call (XRST), you can restart the program from its latest checkpoint. You can identify this checkpoint from the DFS681I, DFS395A, or DFS682I messages.

DFS681I

This message lists the checkpoint ID and the PSB name, and is issued when the program takes a checkpoint.

DFS395A

The Database Batch Backout utility issues this message when it cannot restart.

DFS682I

This message lists the checkpoint ID and the program name, and is issued after emergency restart or after dynamic backout following an abend.

Specify the checkpoint ID value or LAST in the PARM field of the JCL used for restarting the BMP.

To restart a BMP after a cold start of IMS, use the IMS Log Analysis utility to scan for X'37' log records that contain BMP restart information for the desired BMP (job name, PSB name, program name). The last X'37' log record printed contains the information needed to restart the BMP region.