I truncated cache_block and cache_bootstrap tables in Drupal database (I don't know if its okay to truncate cache tables) and after that my site went down.

I am getting HTTP Error 500 that says

The website encountered an error while retrieving www.drupalwebsite.com. It may be down for maintenance or configured incorrectly.

Before truncating those tables, my site was working fine. Is there any way to get it back to working??


I cleared all other cache tables too...


[Thu Dec 27 02:51:24 2012] [warn] [client *IP_Address*] mod_fcgid: stderr: PHP Fatal error: Call to undefined function ctools_include() in /var/www/vhosts/*my_site_name*/drupal/sites/all/modules/views/views.module on line 62

  • 1
    Can you check your PHP error log, Drupal dblog (if you have drush) and report back with what you see. Commented Dec 26, 2012 at 9:44
  • 4
    You need to read your webserver logs to find out what is causing the error.
    – googletorp
    Commented Dec 26, 2012 at 9:44
  • 3
    Try truncating other cache tables too. Commented Dec 26, 2012 at 9:52
  • Is your Ctools module folder exist?
    – kalabro
    Commented Dec 28, 2012 at 10:44
  • @kalabro yes it does, but the module is disabled Commented Dec 28, 2012 at 10:55

2 Answers 2


Somehow your site has entered a broken state since the Views module depends on ctools but it's not enabled.

What you need to do to fix it is to:

  1. Enable the ctools module in the database, by running the following SQL UPDATE system SET status = 1 WHERE name = 'ctools';
  2. Truncate all the cache tables in your database.
  3. (Might not be needed) run $ drush rr, requires drush and the registry rebuild extension.
  4. Run $ drush cc all requires drush.

Going through the above list should fix your site. Messing with your sites cache table can be a bit dangerous if you don't know what you are doing since drupal caches what modules it needs to load for performance.

You can read more about and download drush and registry rebuild on drupal.org.

  • Thanks so much.. I followed the first two steps and site is running now.. I know now I dont have to, but am just a little curious, how and where do I run - $ drush rr. Sorry but I am new to Drupal Commented Dec 28, 2012 at 11:46
  • Drush is a shell extension for drupal, that allows you to be able to do stuff on your Drupal site from the shell.
    – googletorp
    Commented Dec 28, 2012 at 12:33
  • @see drupal.org/project/drush
    – revagomes
    Commented Dec 28, 2012 at 13:46

I found this tool extremely useful in resoling similar problems. Just on your server, wget boomshadow.net/tools-utils/fixperms.sh Then, sh ./fixperms.sh -a USER-NAME

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