The CICS® VR recovery control data sets (RCDSs) are three linear VSAM data sets used by CICS VR as a data repository. Necessary recovery information is both written to and read from the RCDSs by various CICS VR processes.
The RCDSs must be created prior to activating the CICS VR server address space, using a predefined naming convention. During activation of the CICS VR server address space, CICS VR attempts to allocate the previously created RCDSs to the DWWCON1, DWWCON2, and DWWCON3 ddnames using the predefined naming convention. The first level qualifier, and optional second level qualifier, of the RCDS naming convention used by CICS VR is taken from the value specified in the CICSVR_RCDS_PREFIX parameter.
See Understanding the recovery control data sets (RCDSs) for more information.