XCF_SFM_SSUMLIMIT

Description:

Check that the sysplex failure management (SFM) policy specifies the recommended action to be taken when a system becomes status update missing but continues to send signals.

Reason for check:

It is recommended that the SFM SSUMLIMIT attribute be specified to allow time to investigate the reason for the status update missing and to take action to correct the condition. The IBM® default value is 900 seconds (15 minutes). However, it is the installation's responsibility to ensure that the check parameters reflect an appropriate value. Consider SSUMLIMIT carefully to arrive at a value that reflects the needs, goals, and prior experiences for a given configuration. If the goal is to remove systems quickly when status update missing occurs, 60 seconds is a good value.

Parameters accepted:

SSUMLIMIT setting must be 'NONE' or a decimal value between 0 and 86400 inclusive.

z/OS® releases the check applies to:

z/OS V1R10 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(IBMXCF,XCF_SFM_SSUMLIMIT)                        
SEVERITY(MED) INTERVAL(004:00) DATE('date_of_the_change')
PARM('SSUMLIMIT(900)') 
 REASON('Your reason for making the update.')

Reference:

For more information, see z/OS MVS Setting Up a Sysplex.

Messages:

This check issues the following exception messages:

IXCH0522E

See the IXCH messages in z/OS MVS System Messages, Vol 10 (IXC-IZP).

SECLABEL recommended for MLS users:

SYSLOW