MySQL error in file: /engine/modules/show.full.php at line 41

Error Number: 1016

The Error returned was:
Can't open file: './nainfo/dle_post_extras.frm' (errno: 24 - Too many open files)

SQL query:

SELECT * FROM dle_post LEFT JOIN dle_post_extras ON (dle_post.id=dle_post_extras.news_id) WHERE id = '23625'