.-ON--. >>-+-/CQSET-+--SHUTDOWN--SHAREDQ--+-----+--STRUCTURE------------> '-/CQS---' '-OFF-' .---------------. V | >--+---structurename-+-+--------------------------------------->< '-ALL---------------'
Table 30 lists the environments (DB/DC, DBCTL, and DCCTL) from which the command and keywords can be issued.
Command / Keyword | DB/DC | DBCTL | DCCTL |
---|---|---|---|
/CQSET | X | X | |
SHAREDQ | X | X | |
SHUTDOWN | X | X | |
STRUCTURE | X | X |
Use a /CQSET SHUTDOWN SHAREDQ ON|OFF command to tell CQS whether to take a structure checkpoint during normal shutdown. You can specify a structure checkpoint for a specific coupling facility or for all coupling facility list structures used by IMS.
IMS initiates a normal CQS shutdown during a normal IMS shutdown.
This command is valid only in a shared-queues environment.
In an IMSplex, when the /CQS command is issued through OM command processing, it is not serialized through the IMS CTL TCB.
During a structure checkpoint, every CQS connected to that structure also takes a system checkpoint.
Entry ET:
/CQSET SHUTDOWN SHAREDQ ON STRUCTURE ALL
Response ET:
DFS058I CQSET COMMAND COMPLETE
Explanation: CQS will take a structure checkpoint when it shuts down.