In out of memory conditions, it's possible to start getting this
assertion failure repeatedly.
output in MSGPATH file (with assertion and out of memory
errors):
23:43:23 mt_rw_create: out of memory
23:43:23 Assert Failed: Condition Failed (rw_mutex->rw_slock >
0), In (mt_rw_unlock)
23:43:23 IBM Informix Dynamic Server Version 11.70.UC8
23:43:23 Who: Session(54380, informix@, 0, (nil))
Thread(9, soctcplst, 0, 1)
File: mtshpool.c Line: 4683
23:43:23 Action: Please notify IBM Informix Technical Support.
...
03:34:51 create_tcb: cannot allocate memory
...
03:34:57 Size of resident + virtual segments 93628KB + 939140KB
> 1000000KB
03:34:57 total allowed by configuration parameter
SHMTOTAL
03:34:57 create_tcb: cannot allocate memory
03:34:57 (59760) connection rejected - too many users, or
invalid user name
03:34:57 create_tcb: cannot allocate memory
The server is clearly in an out of memory condition. An
important thing to notice is actually the "mt_rw_create: out of
memory" message, that is key to hitting the issue.
Stack trace in the assertion failure for the thread:
afstack
afhandler
affail_interface
mem_asfail
mt_rw_unlock
mt_cache_lookup
_osgethostbyaddr
tcptladdr2cons
accpsocket
tlAccept
slSQIind_accp
pfConInd_accp
cmConInd_accp
ascInd_accp
ASF_Call
sql_listener
startup |
