'enq: TX - row lock contention' and 10046 trace

From: Rich <richa03_at_gmail.com>
Date: Thu, 29 Nov 2012 08:27:08 -0800
Message-ID: <CALgGkeAsBbvvoPrfKkgustVism-77xzdVg7qzgtsv58pN2KZ1g_at_mail.gmail.com>

Hi List,
This is on Solaris 10.

We are seeing large amounts of the blocking enqueue 'enq: TX - row lock contention' on insert of a normal/heap table as well as smaller amounts on a couple of updates of this table.

We have repro'd the issue in test and have 10046 (level 12) traces of all of the sessions involved.

From the traces, we see these locks are mostly on one of the
(normal/B-tree) indexes (USERSTATUS), however, some of them are on another
(normal/B-tree) index (ROUTINGSTATUS).

We are trying to consolidate these traces into a timeline. We tried to use trcsess, however, it requires at least one of the parameters be set. This application (COTS) is not instrumented such that any of these fields are populated, so that isn't working very well.

IIRC, there were tools (Perl script? maybe Hotsos/Cary Millsap?) allowing many tracefiles to be consolidated in relation to time, however, I cannot seem to find them.

Would someone on this list please direct me to such tools or give me another avenue to try to determine what the application is doing?



Received on Thu Nov 29 2012 - 17:27:08 CET

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