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Informix fail

Posted on 2009-04-02
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Last Modified: 2013-12-24
I have this error message with my informix db, the error is:

listener-thread: err = -25571: oserr = 0: errstr = : Cannot create an user thread. On NT check username, and IXUSERS group.

when the error ocurrs, theinstance is blocked; I'm using Informix:IDS 9.40-FC4 runing on Solarins: 5.8, the ONCONFIG is: NETTYPE         tlitcp,4,150,CPU

Kernel configuration
ndd -get /dev/tcp tcp_conn_req_max_q0
1024
ndd -get /dev/tcp tcp_conn_req_max_q
128

also I have 106 active conections, 256 total, 133 maximum concurrent
the diary average is 100 to 700 conections

some idea?
 

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Question by:david_2911
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4 Comments
 
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Expert Comment

by:gheist
ID: 24054104
You cannot have 700 connections in current setup, only 600

try
NETTYPE soctcp,8,200,cpu

what is the output of onstat -p and onstat -g glo? (after my change)

Can I have full onconfig for review?
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gheist earned 500 total points
ID: 24054116
or better:

NETTYPE soctcp,8,200

for class to be selected automatically. -g glo will show class used.
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LVL 62

Expert Comment

by:gheist
ID: 24132473
Also
NUMAIOVPS <no value>

Makes sytem auto-tuning.

NUMCPUVPS must be CPU-1

Rule of a thumb is to have twice times CPU count 200-connection network processes.
Never ever try more than 200 connections per net process. Do not run SHM connections alongside NET connections.

m=1 option makes informix ODBC driver to reuse connections for more SQL statements - maybe this helps your cause.
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by:gheist
ID: 24132503
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