Logging in IBM MQ for z/OS

IBM MQ maintains logs of data changes and significant events as they occur. These logs can be used to recover data to a previous state if required.

The bootstrap data set (BSDS) stores information about the data sets that contain the logs.

The log does not contain information for statistics, traces, or performance evaluation. For further details about the statistical and monitoring information that IBM MQ collects, see Monitor and statistics.

• Log files in IBM MQ for z/OS
  Log files contain information needed for transaction recovery. Active log files can be archived so that we can keep log data for a long period.
• How the log is structured
  Use this topic to understand the terminology used to describe log records.
• How the IBM MQ for z/OS logs are written
  Use this topic to understand how IBM MQ processes log file records.
• Larger log Relative Byte Address
  This function improves the availability of the queue manager by increasing the period of time before you have to reset the log.
• The bootstrap data set
  The bootstrap data set is required by IBM MQ as a mechanism to reference log data sets, and log records. This information is required during normal processing, and restart recovery.

Parent topic: IBM MQ for z/OS concepts

Related information

• Plan your logging environment
• Set logs using the system parameter module
• Administer z/OS
• Messages for IBM MQ for z/OS
• Sources from which we can issue MQSC commands on z/OS