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Understanding the Repository Backup utility

The Repository Backup function takes advantage of RMGR features, allows the repository to be read during backup, and prevents repository updates during backup.

All backup processing occurs in the RMGR address space. RMGR dynamically allocates the backup data set that you specify with SYSIN keywords and copies the RMGR repository to that data set. The high-used RBA of the repository is used to determine how much space is needed for the backup data set.

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To prevent repository updates during a backup when RMGR is active, you should always use the Repository Backup function rather than the IDCAMS REPRO command.

BMC recommends that you back up the RMGR repository on the same schedule as you back up your IMS RECON data sets. To obtain a second copy of the RMGR repository, BMC recommends that you submit a job after the repository backup job to perform a copy (for example, IDCAMS REPRO or IEBGENER) of the backup data set that was just created.

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Performing-repository-backups


 

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BMC AMI Database Advisor for IMS 3.2