Maintaining consistency across multiple systems

Data consistency issues arise when Db2 acts in conjunction with other systems, such as IMS, CICS®, or remote database management systems (DBMSs).

Multiple system consistency
Db2 can work with other DBMSs, including IMS, and other types of remote DBMSs through the distributed data facility (DDF). Db2 can also work with other Db2 subsystems through the DDF.
Resolving indoubt units of recovery
If Db2 loses its connection to another system, it attempts to recover all inconsistent objects after restart. The information that is needed to resolve indoubt units of recovery must come from the coordinating system.

Parent topic: Operation and recovery