IMSplex requirements for FDBR

A Fast Database Recovery (FDBR) system must have the appropriate definitions to use the Common Service Layer (CSL), a Structured Call Interface (SCI), or the global online change function.

In an IMSplex with the CSL, you must define the FDBR system with access to CSL. An SCI must be defined on the operating system of the FDBR system.

If you use the global online change function in an IMSplex, any FDBR system that is tracking the active system must also be defined with global online change and it must use the same OLCSTAT data set as the active system. If the IMS system does not use RM services (defined with RMENV=N), the active IMS system must exclusively own the OLCSTAT data set. The OLCSTAT data set can include the IMSID of only the active IMS system.