Defer of BMP backout programs to speed emergency restart

After a system-wide failure, IMS backs out the interrupted online programs as it restarts. This backout must be complete before regular work can continue. You can request postponement of BMPs by specifying the NOBMP keyword on the /ERESTART command.

This backout hastens restart if either of the following conditions is true:

• A BMP had run a long time since its last commit point and needs large quantities of data backed out
• The program has a low priority and could have its restart postponed with no trouble

If you postpone BMP backout, you must run the Database Batch Backout utility some time before you rerun the BMP, or before you put the affected database back online (in case other programs need it).

If you register the affected database with DBRC, DBRC prevents programs from using that database before a backout is performed.