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- Description:
- Changes in the size of CSA or private (including the extended
areas) since the last IPL.
- Reason for check:
- The values provided by IBM® are
1 megabyte and 10 megabytes for storage below the line and storage
above the line, respectively. These value are helpful in determining
when the module growth in LPA or the nucleus could reduce the size
of the private area.
- 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 threshold at which changes in CSA or private below the line will
result in an exception being issued. (keyword: BELOW)
- Number of bytes with optional suffix (K,M) indicating
the threshold at which changes in CSA or private above the line will
result in an exception being issued. (keyword: ABOVE)
- Default: BELOW(1M),ABOVE(10M)
- 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(IBMVSM,VSM_CSA_CHANGE),
INTERVAL(ONETIME),
SEVERITY(HIGH),
PARM('BELOW(1M),ABOVE(10M)'),
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:
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.
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