Understanding the recovery control data sets (RCDSs)

The CICS® VR recovery control data sets are three linear VSAM data sets that CICS VR uses to store and retrieve various recovery information.

The three RCDSs contain the same recovery information, and the redundancy helps protect against loss of recovery data due to hardware failure or data corruption. The three RCDSs must be created prior to using CICS VR and starting the CICS VR server address space, and must follow a specific naming convention. After the RCDSs are created, they are allocated to the CICS VR server address space upon activation to the DWWCON1, DWWCON2, and DWWCON3 ddnames. The same RCDSs must also be allocated to the same DWWCON1, DWWCON2, and DWWCON3 ddnames by the CICS VR panel interface and batch jobs that start CICS VR utilities.


Concept Concept

Feedback


Timestamp icon Last updated: Friday, 7 February 2014


http://pic.dhe.ibm.com/infocenter/cicsts/v5r1/topic///dwwig/allocds4.html