What is the importance of ADDRSPC parameter in EXEC statement and how is it different from REGION parameter of EXEC statement?

DavidStagg
Profile Answers by DavidStagg

Mar 19th, 2006

The REGION parameter requests storage for individual steps.The ADDRSPC parameter prevents the step from being paged. The default is ADDRSPC=VIRT which allows it to be paged. If set to ADDRSPC=REAL, the step will be locked into real storage during the execution. REAL is only required for programs that are time dependent and those that dynamically modify channel programs during I/O operations. If used, it has an adverse effect on the system's performance.

INDIAN

Apr 8th, 2006

See the addrspc parameter specify wheter the job is using virtual memory or real memory at the time executing , but deafultly its virtual memory.
Region paramater indicates the job is using some amount memory for execute the job, if job needs more than , what we have spicefied in REGION parametr than its gives s804 ERROR OR S822 ERROR.
PLEASE REPLY TO MY ID

kiran

Apr 17th, 2006

Hi,
ADDRSPC: this parameter specifies whether your job should use the Virtual memory or the Real memory when executing.
Advantage of Virtual memory is , the Job can be paged. Virtual is Default.
Region:- Region parameter allocates the specified memory in the Real storage or Virtual storage as mentioned in the ADDRSPC parameter.
If they are coded in the EXEC statement , then they are applicable only for that step.
If coded both on job and exec then Job overrides Exec.