ASM_PLPA_COMMON

Description:

Checks on the combined size of the PLPA and Common page data sets in relation to the size of CSA/ECSA and PLPA/EPLPA . The check generates an exception if the PLPA and Common page data sets size can not accommodate the percentage (identified by the warning threshold) of the slots required for all CSA/ECSA and PLPA/EPLPA.

Reason for check:

You should define the PLPA and Common page data sets based on the size of CSA/ECSA and PLPA/EPLPA, if known.

z/OS® releases the check applies to:

z/OS V1R8 and later.

User override of IBM® values:

The following shows the default keywords for the check, which you can override on either a POLICY statement in the HZSPRMxx parmlib member or on a MODIFY command. This statement may be copied and modified to override the check defaults:

  UPDATE,
        CHECK(IBMASM,ASM_PLPA_COMMON_SIZE),
        INTERVAL(ONETIME), 
        PARM('THRESHOLD(100%)'),
        DATE('date_of_the_change')

Debug support:

Verbose support:

Parameters accepted:

Yes, as follows:

When not using dynamic severity: THRESHOLD(value),
When using dynamic severity: THRESHOLD_HIGH(value), THRESHOLD_MED(value), THRESHOLD_LOW(value), THRESHOLD_NONE(value)
Note that the thresholds specified should decrease in value as the severity increases, since a lower percentage indicates a more severe condition (the PLPA and COMMON paging data sets are able to accommodate a smaller amount of pages), as shown in the following example:
```
PARM('THRESHOLD_HIGH(50%),THRESHOLD_MED(80%), THRESHOLD_LOW(100%)')
```

The variable for the parameters is as follows:

value: An integer, 0-100 indicating the warning threshold percent. It may optionally be followed by %.

Default: THRESHOLD(100%)

You can use synonyms for these parameters, as follows:

Parameter	Synonyms
THRESHOLD_HIGH	THRESHOLD_HI THRESHOLD_H
THRESHOLD_MED	THRESHOLD_M
THRESHOLD_LOW	THRESHOLD_L
THRESHOLD_NONE	THRESHOLD_NO THRESHOLD_N

Note that your number for the HIGH cases is smaller than the MED cases, as shown in the following example:

PARM('THRESHOLD_HIGH(70%),THRESHOLD_MED(85%),THRESHOLD_LOW(100%)')

Reference:

For information on auxiliary storage management initialization, see z/OS MVS Initialization and Tuning Guide .

Messages:

This check issues the following exception messages:

ILRH0105E

See the ILRH messages in z/OS MVS System Messages, Vol 9 (IGF-IWM).

SECLABEL recommended for multilevel security users:

SYSLOW - see z/OS Planning for Multilevel Security and the Common Criteria for information on using SECLABELs.