Load library secondary extents

CICS® supports load library secondary extents that are created while CICS is executing. If you define libraries in the DFHRPL concatenation with primary and secondary extents, and secondary extents are added while CICS is running, as a result of link-editing into the DFHRPL library, the CICS loader detects the occurrence and closes then reopens the library. This means that you can introduce new versions of programs by using the CEMT NEWCOPY command, even if the new copy of the program has caused a new library extent.

However, you should not attempt to apply service to data sets that are used by executing CICS TS components.

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