Coupling Facility (CF)" /> CF structure media recovery

 

CF structure media recovery

Media recovery of a CF structure used to hold persistent messages on a shared queue, relies on having a backup of the media that can be forward recovered by the application of logged updates. Take backups of your CF structures periodically using the MQSC BACKUP CFSTRUCT command. All updates to shared queues (MQGETs and MQPUTs) are written on the log of the queue manager where the update is performed. To perform media recovery of a CF structure apply logged updates to that backup from the logs of all the queue managers that have used that CF structure. When you use the MQSC RECOVER CFSTRUCT command, WebSphere MQ automatically merges the logs from relevant queue managers, and applies the updates to the most recent backup.

The CF structure backup is written to the log of the queue manager that processed the BACKUP CFSTRUCT command, so there are no additional data sets to be collected and transported to the alternative site.