VSAM Demystified

3.8. IDCAMS LISTCAT output fields

In the ICF catalog, VSAM maintains special RBA, CI, and Key values together with time stamps, which are very important in accessing a VSAM cluster. The most important ones are located in the VVR AMDSB in the VVDS cell and are updated only at Close time.

IDCAMS LISTCAT command displays this information, which is key to diagnosing what caused the error. The screen below shows some JCL you need in order to issue the LISTCAT command via BATCH. You can issue the same command under TSO/ISPF.

//LISTCAT  JOB 'LISTCCAT EXAMPLE',NOTIFY=&SYSUID
//*-----------------------------------------------------------------*
//EXAMPLE  EXEC PGM=IDCAMS
//SYSPRINT DD SYSOUT=*
//SYSIN    DD *
           LISTC ENTRY(DAWN.KSDSEXG)  ALL
				

The output from ...