GRS_Mode

Description:

Checks the mode of the Global Resource Serialization complex.

Reason for check:

A STAR configuration is recommended because it provides better availability, real storage consumption, processing capacity, and response time.

z/OS® releases the check applies to:

z/OS V1R4 and later.

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(IBMGRS,GRS_MODE)                                
SEVERITY(LOW) INTERVAL(ONETIME) PARM('STAR') DATE('date_of_the_change')
REASON('Your reason for making the update.')

Parameters accepted:

Yes, you can specify the mode required, either STAR, RING, or NONE. For example, PARM('STAR')

Default : STAR

Reference:

For more information on GRS, see z/OS MVS Planning: Global Resource Serialization.

Messages:

This check issues the following exception messages:

ISGH0301E
ISGH0303E

See the ISGH 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.