System-managed access-path protection

System-managed access-path protection (SMAPP) allows you to use some of the advantages of journaling without explicitly setting up journaling. Use SMAPP to decrease the time it takes to restart your system after an abnormal end.

SMAPP is a way to reduce the time for the system or independent disk pool to restart after an abnormal end. An access path describes the order in which records in a database file are processed. A file can have multiple access paths, if different programs need to see the records in different sequences.

When the system or an independent disk pool ends abnormally, the system must rebuild the access paths the next time you restart the system, or vary on an independent disk pool. When the system must rebuild access paths, the next restart or vary on operation takes longer to complete than if the system ended normally.

When you use SMAPP, the system protects the access paths so the system does not need to rebuild the access paths after an abnormal end. This topic introduces SMAPP, describes SMAPP concepts, and provides setup and management tasks.