Explanation
The number of available buffers in VTAM® buffer pool bp dropped
to or fell below the expansion point value specified for that pool,
and VTAM attempted to expand
the pool. VTAM could not expand
the pool for the reason indicated by code.
bp is the name
of the buffer pool.
VTAM issues
the following
codes when a failure occurs during
a deferred expansion.
- Code
- Description
- 4
- Not enough CSA storage was available for the expansion.
- 5
- Not enough fixed storage available for the expansion.
- 7
- Storage is not available because VTAM’s
CSA limit has been exceeded.
- 8
- Expansion would have caused the pool to exceed its xpanlim specification.
See the z/OS Communications Server: SNA Network Implementation
Guide for additional information
about xpanlim.
VTAM issues
the following
codes when a failure occurs during
an immediate expansion.
- Code
- Description
- 14
- Not enough CSA storage was available for the expansion.
- 15
- Not enough fixed storage available for the expansion.
- 17
- Storage is not available because the VTAM CSA limit has been exceeded.
- 18
- Expansion would have caused the pool to exceed its xpanlim specification.
See the z/OS Communications Server: SNA Network Implementation
Guide for additional information about xpanlim.
System action
VTAM did
not expand the buffer pool this time. When VTAM contracts other buffer pools, it will try
again to expand this pool. Performance might be adversely affected
by this failure to obtain more buffers.
Operator response
See the explanation of IST930I when that
message is issued.
If VTAM continues
to issue this message, enter the DISPLAY BFRUSE command. Save the
system log and request a dump for problem determination.
System programmer response
See the explanation of IST930I when
that message is issued.
If APPL-APPL sessions are not paced
at the session level, storage expansion failures can occur. If an
APPL-APPL session is not paced at the session level, there is no limit
to the number of VTAM I/O buffers
that the session can use. See the section on common subarea network
problems in the z/OS Communications Server: SNA Diagnosis Vol
1, Techniques and Procedures for more information about this problem.
Increase
storage as required. For insufficient storage errors, you might want
to redefine your buffer pool or CSA start options. If the start option
cannot be modified using the MODIFY VTAMOPTS command, you must modify
the VTAM start options file
(ATCSTR
xx) and restart VTAM to use the start option.
Routing code
Descriptor code