Notification to VLF is automatic when both of the following are
true:
- VLF runs on a sysplex. Each VLF that is active on a sysplex automatically
receives notification of changes to shared data. When one system
in the sysplex changes data, each VLF that is active on the sysplex
and that shares the changed data is automatically informed of the
change. See z/OS MVS Setting Up a Sysplex for more information about setting up
VLF to run on a sysplex.
- The changed data is in a PDS class. Additionally, the change
to the PDS data must have been made by either:
- A program that uses IBM® data
management services
- A program that provides notification of the change to one of the
systems by issuing the COFNOTIF macro.