Deleting the DFSMShsm common recall queue structure

The following information can be found under the topic "Correcting Errors within the Common Recall Queue" of the z/OS DFSMShsm Storage Administration.

Move all recall requests from the CRQ back to the local DFSMShsm hosts for processing by issuing the following command on all DFSMShsm hosts that are connected to the CRQ structure:
```
SETSYS COMMONQUEUE(RECALL(DISC))
```
Each host will issue message ARC1502I after it disconnects from the structure.
To determine if all DFSMShsm hosts have disconnected, issue the following command:
```
DISPLAY XCF,STRUCTURE,STRNAME=SYSARC_basename_RCL
```
where basename is the name specified on the following command:
```
SETSYS COMMONQUEUE(RECALL(CONNECT(basename)))
```
The number of connections reported should be zero. Hosts will not disconnect from the structure until they have completed processing requests that they have already selected.
Deletion of the structure might need to be forced. See Deleting structures with SETXCF FORCE for more information on forcing deletion of persistent structures with the SETXCF FORCE,STRUCTURE,STRNAME=SYSARC_basename_RCL system command.

To re-initiate use of the DFSMShsm common recall queue structure, issue the following command on each DFSMShsm host that was previously connected:

SETSYS COMMONQUEUE(RECALL(CONNECT(basename)))

This command will re-allocate the structure and cause each host to automatically move all of its local recall requests back onto the CRQ.