RRS_DUROffloadSize

Description:

The check evaluates the size of the Delayed UR log's offload data set.

Reason for check:

The size of the Delayed UR log's offload data set should be at least as large as the space allocated for the log stream's CF structure. Why? Because a small offload data set may cause multiple offload data sets to be created for each offload of the CF. The increased overhead in allocating data sets can degrade offload performance and the performance of RRS when reading the log stream.

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(IBMRRS,RRS_DUROFFLOADSIZE)                                 
SEVERITY(LOW),INTERVAL(8:00),DATE('date_of_the_change')
REASON('Your reason for making the update.')

Parameters accepted:

Reference:

For more information, see z/OS MVS Programming: Resource Recovery.

Messages:

This check issues the following exception messages:

ATRH02E

See the ATRH messages in z/OS MVS System Messages, Vol 3 (ASB-BPX).

SECLABEL recommended for multilevel security users:

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