From: Dan Nelson
Date: September 23 2011 4:49pm
Subject: Re: mysqldump: Got error: 1017: Can't find file:
List-Archive: http://lists.mysql.com/mysql/225822
Message-Id: <20110923164922.GK9801@dan.emsphone.com>
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In the last episode (Sep 23), Shafi AHMED said:
> I have a mysql database of 200G size and the backup fails due to the foll.
> Issue.
> 
> mysqldump: Got error: 1017: Can't find file:
> './ssconsole/ss_requestmaster.frm' (errno: 24) when using LOCK TABLES
> 
> Can someone assist pls.?

$ perror 24
OS error code  24:  Too many open files

You need to bump up the max files limit in your OS.  It may be defaulting to
a small number like 1024.  If you can't change that limit, edit your my.cnf
and lower the table_open_cache number.  You'll lose performance though,
since mysql will have to stop accessing some tables to open others.

http://dev.mysql.com/doc/refman/5.5/en/not-enough-file-handles.html

-- 
	Dan Nelson
	dnelson@stripped