Enqueue on the CCUWLOAD library for CAHCHECK address space.

Document ID : KB000048379
Last Modified Date : 14/02/2018
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Description:

We need to change the CADISK loadlib, CCUWLOAD, but an "Enqueue" exist on this pds, for CAHCHECK address space.

CAHCHECK is automaticaly started at IPL.

How can I free this enqueue ?

Solution:

CA Disk is not causing the contention or own the exclusive allocation of any LOADLIBs.

Hosted CA Health Checks may have data sets allocated to them. If other processes require exclusive control of those data sets, they will be in contention with the CAHCHECK address space. We do not need to shut down the CAHCHECK address space to resolve the contention.

Use the DISPLAY ALLOC command to determine which check owner has the data set:
F CAHC,DISPLAY ALLOC

Displays all data sets allocated to all checks

F CAHC,D A,DSN=data.set.name

Displays a specific data set

F CAHC,D A DSN=generic.data.set*

Then to stop the CA Health Check which has contention on the LOADLIB incontention, you use the following command to stop the Health Check for that

Product/OWNERnn
F CAHC,STOP ownertask

This will eliminate the contention for that LOADLIB, and will stop the Health Checks for that product. From the information above, we feel we have gotten to the bottom of the problem you are experiencing.

CA Disk checks five CA Disk SYSPARMs. They are CARTCALC, IOCHNBLK, IOTRACKS, MERGSORT and IXMQTIME.

If you want to CA Disk checking these setting again after you stop CA Disk task, you can use the following command to restart CA Disk (Health Check) task

F CAHC,START ownertask