Database error

A database query syntax error has occurred. This may indicate a bug in the software. The last attempted database query was:

SELECT value,exptime FROM `objectcache` WHERE keyname='mariowik_mariowiki:pcache:idhash:22025-0!1!0!!en!2'

from within function "MediaWikiBagOStuff::_doquery". MySQL returned error "1194: Table 'objectcache' is marked as crashed and should be repaired (localhost)".