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From "Mario Siegenthaler" <>
Subject Re: Master/Slave jdbc row lock can't be auto-released
Date Thu, 13 Sep 2007 13:53:59 GMT
This works for me. As soon as the database detects the loss of the
connection it frees the lock. Tested with MySQL and SQL-Server. I
didn't plug the power but instead did a kill -9 or unplugged the
network cable on the master.
I think this is supposed to be a feature of any database or else you'd
end up with a lot of locked rows if some clients terminate ungraceful.


On 9/12/07, Dingwen Yuan <> wrote:
> Hi folks,
> We have tested master/slave configuration with pure jdbc persistence and the
> db used are mysql and postgres. When we plugged out the electric cable of
> the master machine, the row lock on the table ACTIVEMQ_LOCK cannot be
> released. So later neither of the machines can get the lock and become the
> master? Is the a known problem? Does any database support row lock auto
> release?
> Thanks
> Dingwen Yuan

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