This information provides a general overview of recovery concepts.
After reading this information, you should understand the following:
- Why you would want to provide recovery for your programs.
- What software errors result in your recovery getting control,
if you provide recovery.
- What we mean when we say a program abnormally
ends.
- The different states for a recovery routine.
- The difference between a mainline routine,
a recovery routine, and a retry
routine.
- What an extended specify task abnormal exit (ESTAE-type)recovery
routine is and how to choose, define, and activate the appropriate
one.
- The difference between what it means to retry and
what it means to percolate.
- How routines in a recovery environment interact.