After running a library diagnostic with LIBSERVE:
//LIBSERVE EXEC PGM=LIBUTIL,PARM='LIBRDIAG'
The following error may be displayed:
LIBRDIAG02: AN ENTRY IN THE MASTER BLOCK AND AN INDEX BLOCK'S FORWARD POINTER DO NOT MATCH
There are a number of things that could cause this problem:
To Resolve the LIBRDIAG errors:
Perform a full backup and restore. Refer to TEC293129 Backup the ROSLIBS and TEC432712 Full Restore from Full and Partial Backup Files for sample JCL and instructions.
Run a ROSTAT to check on dead blocks periodically and if there are a large number, perform a full backup and restore.
Refer to TEC293144 Roscoe library status (ROSTAT) for sample JCL to run a ROSTAT.