CiviCRM/tech notes

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In a Nutshell

You may need to delete the cache tables and the whole template cache folder to fix any potential issues. Use the code below as an example:

SQL code:
USE civicrm_database_name;
TRUNCATE civicrm_acl_cache;
TRUNCATE civicrm_acl_contact_cache;
TRUNCATE civicrm_cache;
TRUNCATE civicrm_group_contact_cache;
TRUNCATE civicrm_prevnext_cache

SELECT * FROM civicrm_preferences WHERE navigation LIKE '%<OLD-URL-FRAGMENT%' 
SELECT * from civicrm_menu WHERE breadcrumb LIKE '%OLD-URL-FRAGMENT%'

rm -rv sites/default/files/civicrm/templates_c/*

Common Errors

XML data could not be loaded

After moving CiviCRM from another host and updating some paths, I got this error [1]:

Fatal error: Uncaught exception 'Exception' with message 'XML data could not be loaded. Make sure you specified the correct path.' in [...] civicrm_invoke() #6 /home/a_user/site in /home/a_user/site/community/sites/all/modules/civicrm/packages/IDS/Filter/Storage.php on line 220

The solution is to delete or update the contents of the file {DRUPAL_HOME}/sites/default/files/civicrm/templates_c/en_US/ConfigAndLog/Config.IDS.ini to reflect the new paths.

Menus retaining old URLs

In order to rebuild menu URLs after changing the base URL [2], visit:


Out of memory errors

You might need to update the civicrm_domain table like this:

update civicrm_domain set config_backend = null WHERE id = 1
-- OR --
TRUNCATE civicrm_domain;