Article ID: 118373, created on Nov 1, 2013, last review on Jul 9, 2014

  • Applies to:
  • Plesk 11.5 for Linux
  • Plesk 11.5 for Windows


Plesk Control Panel displays the following error:

ERROR: PleskMainDBException: MySQL query failed: Unknown table engine 'InnoDB' (db.php:102)
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Incorrect MySQL configuration.

Option 'tmpdir' configured incorrectly, or does not exist:

root@server:/# cat /etc/mysql/my.cnf | grep tmpdir
  tmpdir          = /var/lib/mysql/for-tmp

 root@server:~# ls /var/lib/mysql/for-tmp
  ls: cannot access /var/lib/mysql/for-tmp: No such file or directory


Fix "tmpdir" configuration, change it to correct path, or create required folder:

  1. Create new folder

    root@server:~# mkdir /var/lib/mysql/for-tmp
  2. Change owner to mysql:

    root@server:~# chown mysql:mysql /var/lib/mysql/for-tmp
  3. Restart MySQL service:

    root@server:~# /etc/init.d/mysql restart
    Stopping MySQL database server: mysqld.
    Starting MySQL database server: mysqld . ..
    Checking for corrupt, not cleanly closed and upgrade needing tables..

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