DWW0561S

A record with a zero sequence number is found when switching logs and reading backward. Record nn2 on log dddd2 precedes record nn1 on log dddd1. Processing terminates.

A label record with a zero sequence number was found, and the record before it on the log (nn1) does not have the maximum sequence number (232-1). Record nn1 is the last record on log dddd1, and the zero record is the first record on log dddd2. Some possible causes are:
  • The sequence number was reset to zero by CICS®. If you are not using a journal archive control data set (JACD), CICS® resets the sequence number at every cold start and warm start. CICS® VR functions correctly in this situation.
  • A log data set is omitted when specifying the logs and the next log started with a zero record.
  • A zero sequence number occurred because the JACD is damaged or lost. CICS® VR functions correctly in this situation.
  • A log was skipped during archiving, and the next log started with a record with a zero sequence number.
  • A log had data other than log records.
This message is issued if you specified:
  • The SEQCHKL RESETSEQUENCE(STOP) command
  • STOP in the sequence checking secondary window
  • No option in the reset sequence field of the sequence checking secondary window

CICS® VR stops the backout and prints the reports.

  • Batch–If the sequence number was reset to zero because you are not using a JACD, specify either of these commands:

    SEQCHKR RESETSEQUENCE(WARNING)    
    SEQCHKR RESETSEQUENCE(IGNORE)

    Then restore a new copy from the backup and rerun CICS® VR.

    If you omitted a log, archive this log and rerun CICS® VR.

    If you are using a JACD, find out why the zero sequence number occurred. If the JACD is damaged or lost, no action is required. If a log was skipped during archiving, rerun CICS® VR after archiving the log. In other cases, check the contents of the log to see whether all records needed for backout are present.

    If you want to accept the error message and run CICS® VR, specify either of these commands:

    SEQCHKL RESETSEQUENCE(WARNING)    
    SEQCHKL RESETSEQUENCE(IGNORE)

    Remember to restore the VSAM data sets from the backup copies before you rerun CICS® VR.

  • Online–If the sequence number was reset to zero because you are not using a JACD, specify either WARNING or IGNORE in the sequence checking secondary window. Then restore a new copy from the backup and rerun CICS® VR.

    If you omitted a log, archive this log and rerun CICS® VR.

    If you are using a JACD, find out why the zero sequence number occurred. If the JACD is damaged or lost, no action is required. If a log was skipped during archiving, rerun CICS® VR after archiving the log. In other cases, check the contents of the log to see whether all records needed for backout are present.

    If you want to accept the error message and run CICS® VR, specify either WARNING or IGNORE in the sequence checking secondary window.

    Remember to restore the VSAM data sets from the backup copies before you resubmit the recovery job.