Explanation
VTAM® has
detected a possible storage shortage problem in a coupling facility
structure. You can issue D NET,STATS,TYPE=CFS,STRNAME=structure to
get the storage utilization for the structure.
This message
is issued for each storage type that exceeds 80% storage being used.
This
message will remain on the screen until the problem has been corrected.
- percent is the percentage in use for storage_type.
- storage_type identifies the type of storage
shortage. Possible values are:
- ELEMENTS
- The storage shortage pertains to list elements in a coupling facility
list structure.
- ENTRIES
- The storage shortage pertains to list entries in a coupling facility
list structure.
- structure is the name of the coupling facility
structure.
System action
- If percent is greater than 90 and storage_type is
either ENTRIES or ELEMENTS, then VTAM automatically
attempts to alter the ratio of ENTRIES and ELEMENTS.
- If percent is greater than 90 for storage_type ENTRIES
and ELEMENTS, then VTAM automatically
attempts to alter the size to the SIZE value coded in CFRM policy.
- If the alter attempts fail to relieve the storage problem or percent is
100, VTAM attempts a rebuild
of the structure to change the number of entries or elements available.
- If percent is 100 and storage_type is
ENTRIES or ELEMENTS, attempts to register generic resources or attempts
to log on to generic resources might fail.
Operator response
Issue D NET,STATS,TYPE=CFS,STRNAME=structure and
perform the following based on the structure size indicated in message
IST1375I:
- If the current size is smaller than the maximum size, rebuild
the structure into a facility with space that will allow the maximum
size to be allocated.
- If the current size and maximum size are the same, update the
size of the structure in the active CFRM policy and start a rebuild.
If storage_type is ENTRIES or ELEMENTS and
the percentage is less than 100, a rebuild could be started using
the SETXCF START,REBUILD command. This will cause VTAM to adjust the number of entries and elements
available in the structure. If a rebuild is not started by operator, VTAM automatically attempts a rebuild
in the case when the storage is totally exhausted (percent is
100).
System programmer response
Routing code
Descriptor code