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Displaying posts with tag: mg_ (reset)

mg_hot_replace_table.pl
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Do you have MyISAM tables you reload with new data?

Do your queries, using that table, get blocked because the table is locked?

Do the waiting queries create idle connections slowing down the table load?

Do you wish you could just replace the table?

Years ago I was told you can replace CSV tables by simply replacing the CSV file. I figured this would also be true of a MyISAM file and it is. I use this perl script to replace MyISAM tables forcast and current observation weather data. The processing and tables are created on another computer. Weather forecasting is CPU and database expensive. I then copy (rsync) the files to the production system and run this script.

#!/usr/bin/perl
################################################################################
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New AutoMySQLBackup Script
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MySQL Backup Script has been around for a long time.  I have used it on and off for years but now I’ve needed to make some  improvements.   This script is based on VER. 2.6 – http://sourceforge.net/projects/automysqlbackup/ Copyright (c) 2002-2003 wipe_out@lycos.co.uk.
I have added my own Copyright (c) 2010 mark@grennan.com – http://www.mysqlfanboy.com/Files/automysqlbackup.sh. But as the code says:  This program is distributed in the hope that it will be useful,  but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

My improvements include:

# VER 2.6 Beta 5 – MTG – (2010-04-18)


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