deadlock or timeout (very urgent)

1 New Member

Hi All,

I am a newbie to db2 database. Currently i am facing an issue which i know for sure that many would have faced and resolved.

I am running 6 sql scripts concurrently against the db

the db server is db2/6000 8.2.3

The log file shows couple of errors with the same msg ,

Expand|Select|Wrap|Line Numbers

 DROP TABLE  testing123

DB21034E  The command was processed as an SQL statement because it was not a  valid Command Line Processor command.  During SQL processing it returned:

SQL0911N  The current transaction has been rolled back because of a deadlock or timeout.  Reason code "68".  SQLSTATE=40001

No one is using this table when i try to drop this table.

But after sometime when i run the same command , the script executes successfully. The same error appears on all the 6 log files.

I also tried running one sql at a time and found that i did not encounter the timeout error .

I guess this should be due to the timeout parameter set at the database level.
But i am not sure which parameter to tweak .

some of the parameters that was found on the net were locktimeout , maxlocks etc

Expand|Select|Wrap|Line Numbers

 Max storage for lock list (4KB)              (LOCKLIST) = 25000

Interval for checking deadlock (ms)         (DLCHKTIME) = 10000

Percent. of lock lists per application       (MAXLOCKS) = 80

Lock timeout (sec)                        (LOCKTIMEOUT) = 180

i am also trying to get the snapshot of the database.

Please help me resolve this issue .

Any help on this regard highly appreciated .

-K

Dec 3 '07 #1

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4304

docdiesel

297

Recognized Expert Contributor

Hi,

try a

Expand|Select|Wrap|Line Numbers

set lock mode to wait 5

in your sql scripts to set their timeout to 5 seconds. Perhaps then they give you a hint what's wrong.

Regards,

Bernd

Dec 5 '07 #2

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