Table 'db_cache' is marked as crashed and should be repaired

Hi guys,
my cart doesn't work since this morning :( I did no changed, uploads or anything like that the night before. In the "public_html/cart/logs" I found this:

PHP Fatal error: 145:Table './wc449837_zc2/zen_db_cache' is marked as crashed and should be repaired :: delete from zen_db_cache in /home/wc449837/public_html/cart/includes/classes/db/mysql/query_factory.php on line 120

Could you help and let me know what to do to restore the shop again please?? I got the 1.5.3 version. Please talk to me like to a newbie as I am one :) I installed the shop and I am working with it for few years now but that's is pretty much it.
Your help would be very very much appreciated.
Cheers

Do you have acces to phpmyadmin?

Here is a possible solution.

Create a file (called cache_correct.php) having the following path: admin/includes/extra_datafiles/cache_crrect.php
Where admin is the folder of your secret admin folder.

<?php
if (!isset($_SESSION['cachedbcleared'] && $_SESSION['cachedbcleared'] != true) { 
$db->Execute('DROP TABLE IF EXISTS zen_db_cache;');
$db->Execute('CREATE TABLE zen_db_cache (
  cache_entry_name varchar(64) NOT NULL default \'\',
  cache_data mediumblob,
  cache_entry_created int(15) default NULL,
  PRIMARY KEY  (cache_entry_name)
) ENGINE=MyISAM;');

$_SESSION['cachedbcleared'] = true;
}

Attempt to access your admin login screen.

Check your logs folder for the same/new error messages.
If successful, delete the above file. If it caused an error directly related to that file or did not resolve the previous error, please advise. If there are new/different errors that can not be self resolved, either continue here or begin a new thread. :)

Lara2911:

Could you help and let me know what to do to restore the shop again please?? I got the 1.5.3 version.

Log into your cPanel.
Click on the icon for MySQL Database
Select your zencart database in the modify->repair dropdown
Click the 'repair the database' button.

Cheers
RodG

I have changed to InnoDB And it fixed it, not the ideal solution.

Are you using shared hosting, that's the most common issue I have seen for this

Have you tried file based caching?

RodG:

Log into your cPanel.
Click on the icon for MySQL Database
Select your zencart database in the modify->repair dropdown
Click the 'repair the database' button.

Cheers
RodG

Yes, have done it :) It helped!! Its all good and running again :D Thank you very much for all your help people!!!! xx