Comments on: A Defragmentation Script to Optimize Fragmented Tables in MySQL

By: Phil Dufault

Phil Dufault — Mon, 16 Jan 2012 23:02:32 +0000

Hi Tom,

I’ll need some more data from you — try running the script in debug mode to find out what actions it’s taking. (put -x at the end of the line at top of the script)

Let me know how you make out.

By: Tom

Tom — Tue, 13 Dec 2011 20:21:01 +0000

The script seems to run fine, after I figured out how to populate the ~/.my.cnf file.
But… each time I run it, the same 44 tables are found to be fragmented and optimized.
How can I make the optimization stick?
Thanks, Tom

By: Phil Dufault

Phil Dufault — Thu, 29 Sep 2011 16:45:15 +0000

Thanks for letting me know about the errors Arun. I’ve fixed them.

However, please be more careful with what text you’re pasting to the internet! You showed me your root password.

By: Phil Dufault

Phil Dufault — Thu, 29 Sep 2011 07:15:09 +0000

Thanks, fixed.

By: Robert Brown

Robert Brown — Mon, 15 Aug 2011 01:32:50 +0000

Phil – the updated file is using the ‘ character in the new script (which shares the key with “), whereas it needs to use a ` (which shares the key with ~). It won’t work as posted and errors out.

By: Reynold

Reynold — Sat, 13 Aug 2011 23:06:30 +0000

Thank you Phil:)

By: Michael

Michael — Wed, 27 Jul 2011 14:41:35 +0000

Phil,

godsyn’s suggestion still threw an error on my file. I had to remove the escape characters and run the variable itself without any quote marks. I would make a note to anyone who experiences an error that this is likely the problem.

By: Arun Shetty

Arun Shetty — Sat, 02 Jul 2011 20:17:45 +0000

Not to worry…I managed to fix the error. Its time to use it on my production box now

Thanks,
Arun.

By: Arun Shetty

Arun Shetty — Sat, 02 Jul 2011 19:49:34 +0000

The script runs with an error

[root@IRS-LNX-07 scripts]# ./mysqlDefragmenter –user “root” –password “**redacted**” –host “localhost”
MySQL fragmentation finder (and fixer) v0.7.5, written by Phil Dufault ( http://www.dufault.info/ )
Found 4 databases
Checking openmeetings … found 1 fragmented table.
Optimizing sessiondata … An error occured, check /root/scripts/mysql_error_log.txt for more information.

and the following text is logged:

ERROR at line 1: Unknown command ‘\”.

Please advise.

Best Regards,
Arun.

By: Arun Shetty

Arun Shetty — Sat, 02 Jul 2011 19:40:31 +0000

I was typing the wrong password. Got it to work after keying in the right one

Thanks for the awesome script Phil.

Best Regards,
Arun.