Advanced Topics › Control and Checkpoint File Considerations › How You Migrate to a New Control File › Migrate to a Coupling Facility Structure Control File

Migrate to a Coupling Facility Structure Control File

You can migrate to a coupling facility structure control file in the same way that you migrate to a DASD control file. To view the list of available control file IDs, issue the DISPLAY FILES=CF command. Migration to a coupling facility structure control file occurs in one of these ways:

• From a virtual control file to a coupling facility structure control file
• From one coupling facility structure control file to another coupling facility structure control file
• From a DASD control file to a coupling facility structure control file

To migrate to a coupling facility structure control file:

1. Issue the following command to view the list of available control files:

   DISPLAY FILES
   

2. Issue the following command to initiate the migration to a specific file:

   MIGRATE CONTROLFILE=nn
   

   nn

   Specifies the control file ID of the coupling facility structure control file

You do not have to migrate to the first or next control file identified in the startup procedure or listed in the DISPLAY FILES=CF command response. You can migrate to any usable control file, even if the ID of the control file is lower than the ID for the current control file.

To migrate to the next available control file issue the following command:

MIGRATE CF

Note: When you migrate from a virtual control file to a coupling facility structure control file, the virtual control file is automatically deactivated.