JCL ADDRSPC Parameter Example

Scenario1 - No ADDRSPC parameter for the entire job.

Code -

----+----1----+----2----+----3----+----4----+----5----+
//MTHEXMP1 JOB (META007),'PAWAN Y',REGION=10K

Explaining Example -

The space available to the job for processing is 10K virtual storage because of no ADDRSPC parameter coded.

Scenario2 - 10K real memory at JOB level.

Code -

----+----1----+----2----+----3----+----4----+----5----+
//MTHEXMP2 JOB (META007),'PAWAN Y',ADDRSPC=REAL,REGION=10K

Explaining Example -

ADDRSPC parameter requests central storage. So the space available for the full job is 10K central storage.

Scenario3 - Installation default REAL memory at the JOB level.

Code -

----+----1----+----2----+----3----+----4----+----5----+
//MTHEXMP3 JOB (META007),'PAWAN Y',ADDRSPC=REAL

Explaining Example -

ADDRSPC parameter requests central storage. The space available for the job is the installation default central storage.

Scenario4 - Installation default VIRT memory.

Code -

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//MTHEXMP4 JOB (META007),'PAWAN Y'

Explaining Example -

As per the default value, the ADDRSPC parameter requests virtual storage. The space available for the job is the installation default virtual storage.

Scenario5 - 10K real memory at STEP level.

Code -

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//STEP02 EXEC PGM=PROG1,ADDRSPC=REAL,REGION=10K

Explaining Example -

ADDRSPC parameter requests central storage. So the space available for the step is 10K central storage.

Scenario6 - Both JOB and EXEC statements have ADDRSPC.

Code -

----+----1----+----2----+----3----+----4----+----5----+
//MTHEXMP5 JOB (META007),'PAWAN Y',ADDRSPC=REAL
//*
//STEP01 EXEC PGM=PROG1,ADDRSPC=VIRT

Explaining Example -

The ADDRSPC parameter at the EXEC statement is ignored as the JOB statement has the ADDRSPC parameter and applies to all the job steps.

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