How to make concurrent copies using DFSMS

The concurrent copy function of the Data Facility Storage Management Subsystem (DFSMS) can copy a data set at the same time that other processes access the data. Using DFSMS does not significantly impact application performance.

The two ways to use the concurrent copy function of DFSMS are:

• Run the COPY utility with the CONCURRENT option. Db2 records the resulting image copies in SYSIBM.SYSCOPY. To recover with these DFSMS copies, you can run the RECOVER utility to restore those image copies and apply the necessary log records to them to complete recovery.
• Make copies using DFSMS outside of Db2 control. To recover with these copies, you must manually restore the data sets, and then run RECOVER with the LOGONLY option to apply the necessary log records.