DataBase Problem

Hello everyone …. I have a big problem on my site.
Yesterday i changed my permalinks from
/%year%/%monthnum%/%day%/%postname%/
To this
/%category%/%postname%/
today im looking at my site and I see mass errors

WordPress database error: [Can’t create/write to file ‘/tmp/#sql_52db_0.MYD’ (Errcode: 17)]
DESC wp_comments

WordPress database error: [Duplicate column name ‘comment_subscribe’]
ALTER TABLE wp_comments ADD COLUMN comment_subscribe enum(‘Y’,’N’) NOT NULL default ‘N’
that are some of them
Can anyone help me in this matter
I returned to old perma but there are no chenges in errors
Stil the same
Please someone help me with this matter