Solved

How to resolve a deadlock in MySQL?

Posted on 2008-10-23
6
827 Views
Last Modified: 2012-05-05
When I start new transaction in MySQL sometimes I get an error:

(1205) Lock wait timeout exceeded; try restarting transaction

How can I resolve this deadlock in such case? In other words, I want to KILL the transaction which created this deadlock. Can I do this?
0
Comment
Question by:technoparkcorp
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
6 Comments
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 22783818
that error is NOT a deadlock, but a simple lock.

now, to find the session, I found nothing but some forum entry saying:
<...>
Run mysqladmin debug
Then, the list of locks will be listed in the error log file.
<...>

hope this helps
0
 

Author Comment

by:technoparkcorp
ID: 22783863
I want to kill a transaction right from my PHP script. Not manually from console
0
 

Author Comment

by:technoparkcorp
ID: 22783880
in other words, how can I kill ALL transactions in MySQL?
0
Webinar: MongoDB® Index Types

Join Percona’s Senior Technical Services Engineer, Adamo Tonete as he presents “MongoDB Index Types, How, When and Where Should They be Used?” on Wednesday, July 12, 2017 at 11:00 am PDT / 2:00 pm EDT (UTC-7).

 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 22783915
the simplest would be the restart MySQL.
otherwise, to see all sessions:
http://dev.mysql.com/doc/refman/5.0/en/show-processlist.html

to kill a session:
http://dev.mysql.com/doc/refman/5.0/en/kill.html
0
 

Author Comment

by:technoparkcorp
ID: 22786308
any chance to kill a transaction?
0
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 500 total points
ID: 22786419
yes. see the last link above for the syntax.
0

Featured Post

What Is Transaction Monitoring and who needs it?

Synthetic Transaction Monitoring that you need for the day to day, which ensures your business website keeps running optimally, and that there is no downtime to impact your customer experience.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article is intended for those who are new to PHP error handling (https://www.experts-exchange.com/articles/11769/And-by-the-way-I-am-New-to-PHP.html).  It addresses one of the most common problems that plague beginning PHP develop…
Containers like Docker and Rocket are getting more popular every day. In my conversations with customers, they consistently ask what containers are and how they can use them in their environment. If you’re as curious as most people, read on. . .
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…

691 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question