System action

Table 1 shows the system action for sharable and non-sharable requests.

Table 1. Sharable and nonsharable volume requests
The Request is:	The Volume is Allocated:
The Request is:	Sharable	Nonsharable
Sharable	allocate the volume	wait (see note)
Nonsharable	wait (see note )	wait (see note)
Note: The operator has the option of failing the request. The request will always fail if waiting is not allowed.

For more detailed information on how an application's JCL influences the processing of allocation requests, see z/OS MVS JCL Reference.

For details on how dynamic allocation affects the use attributes of the volumes in your installation, see z/OS MVS Programming: Assembler Services Guide.