Hardware problems

Use this topic as a starting point to investigate hardware problems.

If a hardware error causes data to be unreadable, IBM MQ can still be recovered by using the media recovery technique:
  1. To recover the data, you need a backup copy of the data. Use DFDSS or Access Method Services REPRO regularly to make a copy of your data.
  2. Reinstate the most recent backup copy.
  3. Restart the queue manager.

The more recent your backup copy, the more quickly your subsystem can be made available again.

When the queue manager restarts, it uses the archive logs to reinstate changes made since the backup copy was taken. You must keep sufficient archive logs to enable IBM MQ to reinstate the changes fully. Do not delete archive logs until there is a backup copy that includes all the changes in the log.