VSM_PVT_LIMIT

Description:

Whether the size of private storage is adequate to meet the needs of applications that run on your system.

Reason for check:

The total amount of private virtual storage available to applications on the system is a direct result of the size of CSA and SQA, as well as LPA, MLPA, and FLPA. Changes to the size of any of these areas may impact the amount of virtual storage remaining to satisfy private storage requests.

z/OS® releases the check applies to:

z/OS V1R4 and later, in both ESA and z/Architecture® modes.

Parameters accepted:

Number of bytes with optional suffix (K,M) indicating the minimum amount of below the line PVT required on the system (keyword: PVT)
Number of bytes with optional suffix (K,M) indicating the minimum amount of above the line PVT required on the system (keyword: EPVT)
Default:PVT(1M),EPVT(512M)

User override of IBM values:

The following sample shows the defaults for customizable values for this check. Use this sample to make permanent check customizations in an HZSPRMxx parmlib member used at IBM Health Checker for z/OS startup. If you just want a one-time only update to the check defaults, omit the first line (ADDREPLACE POLICY) and use the UPDATE statement on a MODIFY hzsproc command. Note that using non-POLICY UPDATEs in HZSPRMxx can lead to unexpected results and is therefore not recommended. End of change

ADDREPLACE POLICY[(policyname)] [STATEMENT(name)]
UPDATE
CHECK(IBMVSM,VSM_PVT_LIMIT),
INTERVAL(ONETIME),
SEVERITY(LOW),
PARM('PVT(1M),EPVT(512M)'),
DATE('date_of_the_change')

Reference:

For more information, see z/OS MVS Initialization and Tuning Reference.

Messages:

This check issues the following exception messages:

IGVH101E

See the IGVH 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.