Comments on: MySQL Query Profiler

By: Xaprb

Xaprb — Fri, 19 Feb 2010 02:41:21 +0000

Updated to point to maatkit.org.

By: Marian

Marian — Wed, 17 Feb 2010 15:16:11 +0000

The “Download MySQL Query Profiler” link is broken!

By: Xaprb

Xaprb — Tue, 12 Dec 2006 14:13:30 +0000

I think you should be seeing

connect('database=[DATABASE];host=localhost;port=3306','[USER]',...)

Instead of [DATABASE]. If that's not the trouble, then I'm suspicious of problems with old-style passwords in your MySQL account. Sometimes certain software can connect to an account with an old-style password and other software can't. There is a section in the MySQL Manual on that. Even though you'd think the error would be something like "Client does not support authentication protocol requested," I have seen cases where Perl programs fail with what looks like a wrong-password error instead.

By: Erick

Erick — Tue, 12 Dec 2006 00:18:23 +0000

Thanks. Downloaded that tool and installed it. Now it won't recognize my password. Here's what I am trying at the command prompt:

mysql-query-profiler --user [USER] -d [DATABASE] --pass [CORRECTPASS] --verbosity 3 queries.sql

But this is what I keep seeing:

DBI connect('database=[DATABASE];host=localhost;port=3306','[DATABASE]',...) failed: Access denied for user '[USER]'@'localhost' (using password: YES) at /usr/bin/mysql-query-profiler line 168

Is there any special way I need to give this tool the password? I am specifying it with "--pass" as the perldoc suggests?

Thanks.

By: camka

camka — Tue, 24 Oct 2006 11:15:20 +0000

Another useful tool to be mentioned is MyProfi that takes mysql query log and outputs the most frequently executed queries removing variable data from them, so one may easily analyze the most popular queries and start optimizing them.

Output Sample:

100 select id, name from user where email={}
94  select password from user where name={}
11  update user set name={}, password={} where id={}