CSV_LNKLST

Description:

Checks all active LNKLST sets on the system for PDS's that were created with secondary space defined.

Reason for check:

IBM® suggests that partitioned data sets (PDS) in the LNKLST be defined with only primary spaces. Allocating a PDS with only primary space causes it to have one extent. That makes it easier to stay within the 255-extent limit of the LNKLST set and prevents new extents from being created if a data set is updated after the LNKLST is activated.

z/OS® releases the check applies to:

z/OS V1R4 and later.

Parameters accepted:

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(IBMCSV,CSV_LNKLST_SPACE)
  SEVERITY(LOW) INTERVAL(24:00)   DATE('date_of_the_change')
  REASON('Your reason for making the update.')

Debug support:

In debug mode, this check includes additional error information in the message buffer. You can put a check into debug mode using any of the following:

UPDATE,filters,DEBUG=ON parameters on either the MODIFY command or in an HZSPRMxx parmlib member
Overwrite the OFF value with the ON value in the DEBUG column of the CK panel in SDSF.

Reference:

For more information, see:

Messages:

This check issues the following exception messages:

CSVH0980E

See the CSVH messages in z/OS MVS System Messages, Vol 4 (CBD-DMO).

SECLABEL recommended for MLS users:

SYSLOW

Output:

The report that CSV_LNKLST_SPACE produces is shown below:

CSVH0981I LNKLST set LNKLST00 data sets allocated with secondary

VOLUME DSNAME

ZOS17B SYS1.LINKLIB
ZOS17B SYS1.MIGLIB
ZOS17B SYS1.CSSLIB
ZOS17B SYS1.CMDLIB

In the output:

VOLUME: The volume serial number of a data set in the LNKLST
DSNAME: The name of a data set in the LNKLST