Support for preserve mirror options for recovery

Db2 12 supports the preserve mirror options for the RESTORE SYSTEM and RECOVER utilities. These options are useful if you use Peer-to-Peer Remote Copy (PPRC) to mirror your Db2 production volumes to a remote site for high availability.

During recovery, you can use the preserve mirror options to override the DFSMShsm preserve mirror settings that were in effect when the system-level backup was created. To do so, use the new FLASHCOPY_PPRCP option of RESTORE SYSTEM or RECOVER.

In previous versions of Db2, if you had to override or change the preserve mirror options during recovery from a system-level backup, you had to invoke DFSMShsm directly.