4, December 2008

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Topic: Optimize all your tables automatically
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« on: Jan 30, 2006, 08:22:40 PM »

Here is a script (as promised) that will optimize all the tables in all your mysql databases.

The script is written in php, and it will optimize only the tables that actually have overhead.

To execute it, just replace the connection variables (h,u,p) with the ones you use to connect to your server.

Code:
<?php
echo '<pre>' "\n\n";
 
set_time_limit100 );
 
  
$time microtime();
  
$time explode(' '$time);
  
$time $time[1] + $time[0];
  
$start $time;
  
 
//Connection variables :
 
$h 'localhost';
 
$u 'root';
 
$p 'password';
 
 
$dummy_db 'mysql';//The php->mysql API needs to connect to a database even when executing scripts like this. If you got an error from this(permissions), just replace this with the name of your database

 
$db_link mysql_connect($h,$u,$p);
 
 
$res mysql_db_query($dummy_db'SHOW DATABASES'$db_link) or die('Could not connect: ' mysql_error());
 echo 
'Found 'mysql_num_rows$res ) . ' databases' "\n";
 
$dbs = array();
 while ( 
$rec mysql_fetch_array($res) )
 {
$dbs [] = $rec [0];
 }
 
 foreach ( 
$dbs as $db_name )
 {
echo "Database : $db_name \n\n";
$res mysql_db_query($dummy_db"SHOW TABLE STATUS FROM `" $db_name "`"$db_link) or die('Query : ' mysql_error());
$to_optimize = array();
while ( $rec mysql_fetch_array($res) )
{
if ( $rec['Data_free'] > )
{
$to_optimize [] = $rec['Name'];
echo $rec['Name'] . ' needs optimization' "\n";
}
}
if ( count $to_optimize ) > )
{
foreach ( $to_optimize as $tbl )
{
mysql_db_query($db_name"OPTIMIZE TABLE `" $tbl ."`"$db_link );
}
}
 }
 
 
$time microtime();
  
$time explode(' '$time);
  
$time $time[1] + $time[0];
  
$finish $time;
  
$total_time round(($finish $start), 6);
  echo 
'Parsed in ' $total_time ' secs' "\n\n";
?>


Enjoy Smiley
« Last Edit: Jan 30, 2006, 08:25:09 PM by Nikolas »

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« Reply #1 on: Jan 30, 2006, 08:28:36 PM »

Thank you so much for sharing this.

I asked you about the OPTIMIZE (in the other thread), because I was planning to do this Smiley

Thanks again.
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