System-managed access-path protection

System-managed access-path protection (SMAPP) provides automatic protection for access paths. With SMAPP support, you do not have to use the journaling commands, such as the Start Journal Access Path (STRJRNAP) command, to get the benefits of access path journaling.

SMAPP support recovers access paths after an abnormal system end rather than rebuilding them during IPL. The shipped system automatically turns on SMAPP support. The system sets SMAPP support to a value of 70 minutes.

The system determines which access paths to protect based on:

Target access path recovery times provided by the user, or
A system-provided default time.

You specify target access path recovery times as a system-wide value or on an auxiliary storage pool (ASP) basis. Access paths already in a user-defined journal are ineligible for SMAPP protection because they are already protected.