Title: fatal php error when db query is activated
Last modified: May 3, 2018

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# fatal php error when db query is activated

 *  [fksr86](https://wordpress.org/support/users/fksr86/)
 * (@fksr86)
 * [8 years, 1 month ago](https://wordpress.org/support/topic/fatal-php-error-when-db-query-is-activated/)
 * debug objects works well in my multisite wordpress, except when i try to activate
   the “db query” option. it results in a fatal error on php.
 * from my php error log:
 *     ```
       WordPress database error Query cache is disabled; restart the server with query_cache_type=1 to enable it para a consulta SET SESSION query_cache_type = OFF
       PHP Fatal error:  Allowed memory size of 134217728 bytes exhausted (tried to allocate 2186187 bytes)
       PHP Fatal error:  Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line 0
       ```
   
    -  This topic was modified 8 years, 1 month ago by [fksr86](https://wordpress.org/support/users/fksr86/).

The topic ‘fatal php error when db query is activated’ is closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [fksr86](https://wordpress.org/support/users/fksr86/)
 * Last activity: [8 years, 1 month ago](https://wordpress.org/support/topic/fatal-php-error-when-db-query-is-activated/)
 * Status: not resolved