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Resynchronization: HCD ACTIVATE

When an HCD ACTIVATE is performed, CA MIA automatically performs resynchronization that is based on the values on the DEVCLASS, DEVLIST, DEVEXCL, COMMANDS, and SAMEDEVS parameters on the SETOPTION RESYNCH command. If no values are specified on the SETOPTION RESYNCH command, then the values on the MIMINIT DEVCLASS, DEVLIST, and COMMANDS parameters are used.

Notes:

• When a task is in the tape allocation process and a resynchronization occurs that removes all the devices requested by the task from CA MIA management, CA MIA discontinues the cross-system serialization of the allocation. However, CA MIA can continue its involvement in some parts of the allocation until the allocation completes. For example, if the task goes into allocation recovery, then CA MIA manages the recovery until the allocation recovery messages are responded to.
• If SETOPTION RESYNCH SAMEDEVS=NO, then during resynchronization CA MIA uses the DEVCLASS and DEVLIST options to determine what devices to manage. CA MIA recognizes any devices added by the HCD or the z/OS ACTIVATE command. NO is the default setting.
• If SETOPTION RESYNCH SAMEDEVS=YES, then regardless of what occurs in the z/OS I/O reconfiguration, CA MIA manages the same devices it was managing prior to reconfiguration. The DEVCLASS and DEVLIST options are ignored.
• The RESYNCH parameters are available on both the SETOPTION TPCF and SETOPTION GTAF commands. Setting the RESYNCH parameters with one of these SETOPTION commands automatically sets the same values for the other SETOPTION command.
• Use SETOPTION RESYNCH DEVEXCL=membername to specify an exclude list member. When CA MIA enters the resynchronization process as a result of a z/OS ACTIVATE, the DEVEXCL member that is specified on the SETOPTION RESYNCH command is read and processed. Before issuing an MVS ACTIVATE command, issue the CA MIM DISPLAY OPTIONS command to verify your current DEVEXCL member value.

Note: For more information, see the CA MIM Statement and Command Reference Guide.