Restarting CQS queue structures
Restarting queue structures involves restarting a structure pair. The structure restart function ensures that the data in the structure is correct. Structure restart deals only with the status of data in a specific coupling facility structure, not units of work specific to a given CQS.
Before CQS can restart, CQS must recover each queue structure defined to CQS, if needed. CQS connects to both the primary and the overflow queue structures for each structure pair defined. CQS determines whether the structures need to be warm or cold started and performs the necessary recovery functions. If more than one structure pair is defined to CQS, one structure pair can be warm started and another can be cold started.