|
 |
Coupling facility maintenance mode support |
The INGCF command that supports all the functions of SA z/OS that deal with coupling facilities has been enhanced to support the parameter MAINT. This new parameter puts the coupling facility into or takes it out of maintenance mode.
The MAINT function requires at least one system in the sysplex that runs z/OS 1.9 or later. It also requires that SA z/OS running on the systems that are involved in the command processing must support the MAINT function.
The coupling facility can now have the following additional states:
- MAINTMODE
The coupling facility is in maintenance mode and has not allocated any structures. It can now be removed from the configuration or deactivated without touching the sender paths. If you want to move structures back to the coupling facility you need to take it out of maintenance mode before populating it.
- MAINTMODE OFFLINE
The coupling facility is in maintenance mode and may have allocated structures. At least one system has set all its sender paths to the coupling facility to OFFLINE. XCF rejects any rebuild command to the coupling facility.
- MAINTMODE NOHWACC
The coupling facility is in maintenance mode and has not allocated any structures. It can now be removed from the configuration without touching the sender paths. However, you must do this manually because automation has no access to the appropriate Support Element. If you want to move structures back to the coupling facility you need to take it out of maintenance mode before populating it.
- NORMAL MAINTMODE
The coupling facility is in maintenance mode but has allocated one or more structures. The coupling facility is no longer eligible for structure allocations.
| 
