Database backout

Backward recovery or backout is one of the two major types of recovery. Using backout allows you to remove incorrect or unwanted changes from existing information or work.

Dynamic backout
IMS automatically backs out changes to a database in several different circumstances.
Database batch backout
You can use the Batch Backout utility (DFSBBO00) to remove database changes made by IMS batch jobs and online programs.
DL/I I/O errors during backout
IMS handles I/O errors for DL/I databases in the same way for dynamic backout, batch backout, and emergency restart backout.

Parent topic: Database administrative tasks