You can use the MVS™ DUMP command to obtain a dump
of the coupling facility list structure for a named counter pool.
Before you begin
In order to obtain a dump of a coupling facility list structure, you must specify a value for the DUMPSPACE parameter in the CFRM policy for the coupling facility. The recommended value is 5% of the space in the coupling facility. For more information, see z/OS MVS Setting Up a Sysplex.
Procedure
- Enter the following command at the console:
DUMP COMM=(named_counter_poolname)
- In response to the DUMP command, the system prompts you
with a reply number for the dump options you want to specify. Enter
the reply:
REPLY nn,STRLIST=(STRNAME=DFHNCLS_poolname,ACCESSTIME=NOLIMIT,
(LISTNUM=ALL,ADJUNCT=DIRECTIO)),END
Using abbreviations
for the keywords, this reply can be entered as:
R nn,STL=(STRNAME=DFHNCLS_poolname,ACC=NOLIM,(LNUM=ALL,ADJ=DIO)),END
The parameter
ACCESSTIME=NOLIMIT allows
XES to override server access time limits, to obtain serialization
to take the dump. Without this parameter, no dump is taken if any
server is active.
The parameter ADJUNCT=DIRECTIO
notifies XES not to keep the serialization while dumping adjunct areas.
If servers are currently active but it is considered important to
obtain a serialized dump, to show the structure at a moment in time,
replace this parameter with ADJUNCT=CAPTURE.
Note that this will lock out server access to the structure until
the dump is complete.
If system-managed structure
duplexing is available, then both instances of the structure will
be dumped.
What to do next
For more information about the MVS DUMP command, see z/OS MVS System Commands.