FDBR surveillance

During the surveillance phase, the FDBR region monitors database activity by reading the IMS log. It monitors all activity for shared databases and areas, and can monitor activity for nonshared areas.

If the IMS subsystem that the FDBR region is tracking fails, the FDBR region automatically begins recovery for all tracked databases and areas. If the IRLM for the tracked IMS subsystem fails, or if there is no log activity from the tracked IMS subsystem for a specified length of time, the FDBR region issues a message telling the operator to begin FDBR recovery.