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IDS Forum

Lock Table Overflow

Posted By: Long Nguyen
Date: Wednesday, 5 March 2008, at 7:30 p.m.

Hi all,
This may be an old question but...
We had a replication job that triggered the deletion of more than 1 million
records on a small table while the maximum number of locks in the onconfig
file is 500000.
We got
11:26:43 Lock table overflow - user id 104, session id 360387.
11:26:44 Process exited with return code 1: /bin/sh /bin/sh -c
/usr/informix-10
.00.FC4/alarm.sh 3 21 "Dynamic Server resource overflow: 'Locks'." "Lock
table overflow.
11:26:46 CDR CDRD_4215: transaction aborted (All rows in a transaction
defined
with row scope were rejected) with sql error 0 isam error 0.

The system did automatically rollback afterward but all other transactions
were blocked during that long time because no available locks.
Searching online answers we found some help like this:
"Depending on the version of the engine IDS will automatically add more
memory for the locklist till 8 million locks.
Or you just need to increase the value of Locks in the onconfig file."

Our engine (IDS 10.00 FC4WC) seemed not increase the numebr of locks to 8
millions.
So the only resolution is to increase the LOCKS in ONCONFIG from 500000 to
say 2000000.
Is that the only way to prevent the overflow of the lock table ?
Any help would be appreciated.
Regards,
Long Huy Nguyen
MIS(Analyst Programmer)
Ruralco Limited
P.O.Box 515
Wentworthville NSW 2145 Australia
(Ph) 02 9688 8528 (Fax) 02 9896 7763

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