A Authorized Libraries

APF means "Authorized Program Facility". In a z/OS environment, APF is a facility that permits the identification of programs that are authorized to use restricted functions. APF-authorized programs must reside in one of the following authorized libraries:

  • SYS1.LINKLIB

  • SYS1.SVCLIB

  • SYS1.LPALIB

  • Authorized libraries specified by your installation

Authorized libraries are defined in an APF list. APF also prevents authorized programs (supervisor state, APF-authorized, PSW key 0-7, or PKM 0-7) from accessing a load module that is not in an APF-authorized library.

To find the datasets those are APF authorized:

  1. Type TSO ISRDDN in your ISPF session (some shops need just ISRDDN with no TSO prefix) and press enter.

  2. Type APF and press enter. It will bring up a list of all datasets that are APF authorized.

Remember that, if you like to use an APF authorized dataset in a job STEPLIB, make sure all the datasets in the STEPLIB are APF authorized.

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