All,
Is there a mysql configuration to kill queries that have been locked for quite
some time. If there's none what is an alternative approach to kill these locked
queries and what is the root cause of it?
Thanks,
Mon
The root cause is another query that has tables locked that your locked
queries want. Behind that may be, for example, an inefficient but
often-executed query, high I/O concurrency that has a cumulative slowing
effect, or maybe simply a long-running update that might be better scheduled
during the
Hi Mon,
Killing locked queries is not the first step in database tuning.
Queries locked for a long time usually depend on slow updates that lock
other updates or selects,
this happen on MyISAM (or table level locking engines).
If you are really sure you want and can without problems kill the
Does this happen if your table is InnoDB?
Thanks all,
Mon
From: Claudio Nanni claudio.na...@gmail.com
To: monloi perez mlp_fol...@yahoo.com
Cc: mysql mailing list mysql@lists.mysql.com
Sent: Thu, October 14, 2010 3:16:38 PM
Subject: Re: How to kill locked
On Thu, Oct 14, 2010 at 9:19 AM, monloi perez mlp_fol...@yahoo.com wrote:
Does this happen if your table is InnoDB?
That depends on the type of lock. If no lock type is specified, InnDB will
prefer row locks, while MyISAM will do table locks.
That may help, unless all your queries are trying
On Thu, Oct 14, 2010 at 3:28 AM, Johan De Meersman vegiv...@tuxera.be wrote:
That depends on the type of lock. If no lock type is specified, InnDB will
prefer row locks, while MyISAM will do table locks.
That may help, unless all your queries are trying to access the same rows
anyway :-)
