Question

Describe the life cycle of a check

Answer 1

Check iteration: An instance of a check routine that does the check processing and clean up phases of a check routine. Only one iteration of a particular check, identified by the check and owner name, can run at a time. During refresh processing, a check is reset to its first iteration.

Check life-cycle: The life-cycle of a check is one full cycle of a check, from initialization through delete. Then, when a check is added to the system as part of refresh processing, the life of the check starts all over again.

Installation updates: The installation can update or override some of the default check values you define in the check definition using:
SDSF
The MODIFY command
Policy statements in the HZSPRMxx parmlib member
The installation might update some check values to make the check more suitable for their environment or configuration.

Refresh process: Refresh processing first deletes one or more checks from the IBM Health Checker for z/OS and then add the same checks back to the system. The system does the following for each refreshed check:

Applies any installation updates to the default values for the check.
Clears the 2K work area (PQEChkWork)
Resets the check's iteration count to one.
Starts the initialization phase for the check, if the check is defined as active.

For a local check , you can have multiple checks in a single check routine. When you refresh some, but not all, of the checks in a check routine, the system does refresh processing only for the specified checks.
Refresh processing is kicked off in response to:

Refresh request (E action character) from the SDSF CK panel.

The MODIFY (F) hcproc,REFRESH operator command.

Managing checks includes tasks such as:

Updating or overriding values defined for checks or check output, such as check interval, check severity, or check message routing code or WTO type
Making checks active or inactive
Requesting that the system process HZSPRMxx parmlib members
Adding checks
Deleting checks
Refreshing checks (deleting then adding) checks
Displaying check information.