I get a deadlock when a SQL Server Job runs. The deadlock occurs on a simple DELETE statement. I would have thought there would have to be a SELECT/UPDATE query running to cause the deadlock? But looks like it is DELETE/DELETE deadlock...
What I am looking for is why I am getting a DELETE/DELETE deadlock. It is (to my knowledge) passing in different parameters.
Any ideas? Thanks.
deadlock-list
2014-05-20 07:30:09.66 spid25s deadlock victim=process409048
2014-05-20 07:30:09.66 spid25s process-list
2014-05-20 07:30:09.66 spid25s process id=process409048 taskpriority=0 logused=0 waitresource=PAGE: 12:1:7127294 waittime=4352 ownerId=629860973 transactionname=DELETE lasttranstarted=2014-05-20T07:30:05.307 XDES=0x397219620 lockMode=U schedulerid=5 kpid=3792 status=suspended spid=150 sbid=0 ecid=3 priority=0 trancount=0 lastbatchstarted=2014-05-20T07:30:05.307 lastbatchcompleted=2014-05-20T07:30:05.307 clientapp=QSQL25 hostname=MORRIS hostpid=1528 isolationlevel=read committed (2) xactid=629860973 currentdb=12 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
2014-05-20 07:30:09.66 spid25s executionStack
2014-05-20 07:30:09.66 spid25s frame procname=adhoc line=1 stmtstart=68 sqlhandle=0x020000000b887a18f75d0aa07c25a9b8630fca696aa0e5d2
2014-05-20 07:30:09.66 spid25s DELETE FROM dbo.UserDetailsData WHERE (Username = @P1) AND (UserDate = @P2)
2014-05-20 07:30:09.66 spid25s frame procname=unknown line=1 sqlhandle=0x000000000000000000000000000000000000000000000000
2014-05-20 07:30:09.66 spid25s unknown
2014-05-20 07:30:09.66 spid25s inputbuf
2014-05-20 07:30:09.66 spid25s process id=process432e08 taskpriority=0 logused=0 waitresource=PAGE: 12:1:7127916 waittime=2648 ownerId=629859744 transactionname=DELETE lasttranstarted=2014-05-20T07:30:04.833 XDES=0x4c3426b50 lockMode=U schedulerid=6 kpid=5988 status=suspended spid=146 sbid=0 ecid=3 priority=0 trancount=0 lastbatchstarted=2014-05-20T07:30:04.833 lastbatchcompleted=2014-05-20T07:30:04.820 clientapp=QSQL25 hostname=MORRIS hostpid=1528 isolationlevel=read committed (2) xactid=629859744 currentdb=12 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
2014-05-20 07:30:09.66 spid25s executionStack
2014-05-20 07:30:09.66 spid25s frame procname=adhoc line=1 stmtstart=68 sqlhandle=0x020000000b887a18f75d0aa07c25a9b8630fca696aa0e5d2
2014-05-20 07:30:09.66 spid25s DELETE FROM dbo.UserDetailsData WHERE (Username = @P1) AND (UserDate = @P2)
2014-05-20 07:30:09.66 spid25s frame procname=unknown line=1 sqlhandle=0x000000000000000000000000000000000000000000000000
2014-05-20 07:30:09.66 spid25s unknown
2014-05-20 07:30:09.66 spid25s inputbuf
2014-05-20 07:30:09.66 spid25s process id=process39ea562c8 taskpriority=0 logused=0 waitresource=PAGE: 12:1:7127916 waittime=4352 ownerId=629860973 transactionname=DELETE lasttranstarted=2014-05-20T07:30:05.307 XDES=0x13e0e4b50 lockMode=U schedulerid=2 kpid=7124 status=suspended spid=150 sbid=0 ecid=1 priority=0 trancount=0 lastbatchstarted=2014-05-20T07:30:05.307 lastbatchcompleted=2014-05-20T07:30:05.307 clientapp=QSQL25 hostname=MORRIS hostpid=1528 isolationlevel=read committed (2) xactid=629860973 currentdb=12 lockTimeout=4294967295 clientoption1=671088672 clientoption2=128056
2014-05-20 07:30:09.66 spid25s executionStack
2014-05-20 07:30:09.66 spid25s frame procname=adhoc line=1 stmtstart=68 sqlhandle=0x020000000b887a18f75d0aa07c25a9b8630fca696aa0e5d2
dbo.UserDetailsData
including all indexes? Also, do you know if those statements are being called with the same parameters? Given that both have zero log used, I'm wondering if all you need to do is serialize the calls because they're stepping on each other. – Jon Seigel May 20 '14 at 17:13