- Original Message -
From: Markus Falb markus.f...@fasel.at
With a low timeout the connection will be terminated sooner, but if
the application retries another connection is taken. I could have raised
the timeout with the same effect on the db side (1 process is waiting)
but maybe
- Original Message -
From: trimurthy skd.trimur...@gmail.com
hi sir even i also have a doubt regarding the connections. suppose if
there is an existing connection to the server with the user name
xxx and password if i send another request with the same user name
and password
On 11.10.2012 14:43, Johan De Meersman wrote:
- Original Message -
From: Markus Falb markus.f...@fasel.at
But why is retrying better than raising the value?
So what is better, adjusting the timeout or retrying application side
and why?
Well, raising the timeout would probably
Am 12.10.2012 15:39, schrieb Markus Falb:
With a low timeout the connection will be terminated sooner, but if the
application retries another connection is taken. I could have raised the
timeout with the same effect on the db side (1 process is waiting) but
maybe more performant (no new
I encountered an error
MySQL Error: Lock wait timeout exceeded; try restarting transaction
MySQL Error No: 1205
For this very statement an entry in the binlog was filed
...
# Query_time: 52 Lock_time: 0 Rows_sent: 0 Rows_examined: 0
...
Why is there an entry in the binlog if the statement
In my implementation we found no need to establish a new connection after a
lock timeout but just retried on the existing connection. We did instigate
a sleep timeout of 10 ms which theoretically increased on each iteration
but we never had to try a third time even under very heavy load.
On
I get all your mails for yearscould you not help me and suppress my name
from your contact thanks
To: mysql@lists.mysql.com
From: markus.f...@fasel.at
Subject: innodb_lock_wait_timeout and replication
Date: Fri, 12 Oct 2012 16:08:42 +0200
I encountered an error
MySQL Error: Lock
@lists.mysql.com
From: markus.f...@fasel.at
Subject: innodb_lock_wait_timeout and replication
Date: Fri, 12 Oct 2012 16:08:42 +0200
I encountered an error
MySQL Error: Lock wait timeout exceeded; try restarting transaction
MySQL Error No: 1205
For this very statement an entry in the binlog
Am 12.10.2012 19:58, schrieb Hubert de Donnea:
I get all your mails for yearscould you not help me and suppress my name
from your contact
what the hell
why do people subscribe to a mailing-list without use
google to understand what a mailing-list is?
question is not what caused this timeout but how to handle it.
Should I raise innodb_lock_wait_timeout? What are the disadvantages?
What would be a sensible value?
Should I retry application side?
http://dev.mysql.com/doc/refman/5.0/en/innodb-error-handling.html
says
...snip
Both deadlocks and lock wait
- Original Message -
From: Markus Falb markus.f...@fasel.at
But why is retrying better than raising the value?
So what is better, adjusting the timeout or retrying application side
and why?
Well, raising the timeout would probably help, but may cause more concurrent
connections
On Thu, Oct 11, 2012 at 7:29 AM, Markus Falb markus.f...@fasel.at wrote:
Should I raise innodb_lock_wait_timeout? What are the disadvantages?
The disadvantage is that if the locks still don't clear by the time
the timeout is reached, you're just making the other process wait
longer before
Are you managing transactions with mysql + innodb?
I had a similar issue, and I need to rework the application.
innodb does a row level transaction lock. Read locks aren't exclusive,
update locks are exclusive.
What I was doing was something like this:
Thread P1
begin;
innodb: update field set
Hi,
Check the transactions which are causing locks. Use show engine innodb
status \G to find out the transactions acquiring locks for so long. As the
scenario you mentioned (like you use innodb at simpler level), you might be
in a situation where there are SELECTs causing the issue.
It is
[mailto:akshay.suryavansh...@gmail.com]
Sent: Thursday, October 11, 2012 8:31 AM
To: Andrés Tello
Cc: Johan De Meersman; Markus Falb; mysql@lists.mysql.com
Subject: Re: innodb_lock_wait_timeout
Hi,
Check the transactions which are causing locks. Use show engine innodb
status \G to find out
The original poster mentioned that he is not using transactions explicitly.
Some transactions may still occur as a side effect of some operations under
certain conditions and, in a busy high load environment, cannot be entirely
avoided. Having some experience with this, I can report that it is
to avoid _blocking_ other statements. (MyISAM tries much less
hard.)
-Original Message-
From: Michael Dykman [mailto:mdyk...@gmail.com]
Sent: Thursday, October 11, 2012 10:00 AM
To: MySQL
Subject: Re: RE: innodb_lock_wait_timeout
The original poster mentioned that he is not using
Hi all,
do you know how to set innodb_lock_wait_timeout = 0? Why is it
to be 0?
Regards,
TomH
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