Question

I have an JDBC DB2error, operation timeout or deadlock , error number: -913.

scenario: Operation 1 performing update a row in a table, which may take 2 minutes to complete the operation.

Operation 2 is trying to read the same row by quote number.

have an default locking CS( transaction_read_commited).
I’m seeing ‘operation Timeout or deadlock’ after 60 seconds,
Is this timeout or deadlock scenario?

Is there any way that I can avoid deadlock by increasing connection timeout or lock timeout?

Suggestion around would be appreciate..

Answer 1

You can increase the lock timeout by modifying the locktimeout parameter.

db2 update db cfg using locktimeout 180

This change the wait for 2 minutes. You can also put -1, to wait indefinitely.

For more information http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/topic/com.ibm.db2.luw.admin.config.doc/doc/r0000329.html

The scenario is not a deadlock, because the operation 2 does not hold any resource, it is just trying to access the row being updated.