Title: Database errors after upgrading to 2.3.1
Last modified: August 18, 2016

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# Database errors after upgrading to 2.3.1

 *  [veroninja](https://wordpress.org/support/users/veroninja/)
 * (@veroninja)
 * [18 years, 5 months ago](https://wordpress.org/support/topic/database-errors-after-upgrading-to-231/)
 * So I followed the upgrade tutorial step by step and conducted an upgrade to 2.3.1
 * Everything seems to be working, except for the MAIN PAGE,
    I get the following
   errors:
 * on top:
    WordPress database error: [Table ‘golden_wordpress.wp_post2cat’ doesn’t
   exist] SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts LEFT JOIN wp_post2cat
   ON (wp_posts.ID = wp_post2cat.post_id) WHERE 1=1 AND post_type = ‘post’ AND (
   post_status = ‘publish’ OR post_status = ‘private’) AND category_id <> 4 ORDER
   BY post_date DESC LIMIT 0, 5
 * Right sidebar:
    ——————————————————————————–
 * WordPress database error: [Table ‘golden_wordpress.wp_post2cat’ doesn’t exist]
   
   SELECT wp_posts.ID, wp_posts.post_title, wp_posts.post_content FROM wp_posts,
   wp_post2cat WHERE wp_posts.ID = wp_post2cat.post_id AND wp_post2cat.category_id
   =4 AND wp_posts.post_status=’publish’ AND wp_posts.post_password=” AND wp_posts.
   post_date < ‘2007-12-05 19:20:11’ ORDER BY wp_posts.post_date DESC LIMIT 8
 * MAIN – Centerscreen:
 * “Not Found
    Oh no! You’re looking for something which just isn’t here! Fear not
   however, errors are to be expected, and luckily there are tools on the sidebar
   for you to use in your search for what you need. “
 * ——–
 * My homepage is @ [http://www.daverline.com/ffxi/weblog](http://www.daverline.com/ffxi/weblog)
   if you want to take a look…

Viewing 6 replies - 1 through 6 (of 6 total)

 *  [MichaelH](https://wordpress.org/support/users/michaelh/)
 * (@michaelh)
 * [18 years, 5 months ago](https://wordpress.org/support/topic/database-errors-after-upgrading-to-231/#post-663083)
 * Please review this thread:
    [http://wordpress.org/support/topic/135564?replies=83](http://wordpress.org/support/topic/135564?replies=83)
 * You likely have a theme or plugin that is not 2.3.x compatible.
 *  Thread Starter [veroninja](https://wordpress.org/support/users/veroninja/)
 * (@veroninja)
 * [18 years, 5 months ago](https://wordpress.org/support/topic/database-errors-after-upgrading-to-231/#post-663087)
 * No, because I switched to the “classic” theme right now and get the same errors:
 * Page “not found” in the middle
    and WordPress database error: [Table ‘golden_wordpress.
   wp_post2cat’ doesn’t exist] SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts
   LEFT JOIN wp_post2cat ON (wp_posts.ID = wp_post2cat.post_id) WHERE 1=1 AND post_type
   = ‘post’ AND (post_status = ‘publish’ OR post_status = ‘private’) AND category_id
   <> 4 ORDER BY post_date DESC LIMIT 0, 5 on top
 *  [moshu](https://wordpress.org/support/users/moshu/)
 * (@moshu)
 * [18 years, 5 months ago](https://wordpress.org/support/topic/database-errors-after-upgrading-to-231/#post-663088)
 * MichaelH wrote:
    _You likely have a theme **or plugin** that is not 2.3.x compatible._
 * So, did you deactivate **all** the plugins and the error is still there?
 *  Thread Starter [veroninja](https://wordpress.org/support/users/veroninja/)
 * (@veroninja)
 * [18 years, 5 months ago](https://wordpress.org/support/topic/database-errors-after-upgrading-to-231/#post-663091)
 * ok I deactivated ALL plugins and it appears to be working !
 * Thank you guys for the fast/great help <3
 *  [moshu](https://wordpress.org/support/users/moshu/)
 * (@moshu)
 * [18 years, 5 months ago](https://wordpress.org/support/topic/database-errors-after-upgrading-to-231/#post-663093)
 * Now you can activate them one by one and watch when the error appears. That’s
   the faulty plugin 🙂
 *  Thread Starter [veroninja](https://wordpress.org/support/users/veroninja/)
 * (@veroninja)
 * [18 years, 5 months ago](https://wordpress.org/support/topic/database-errors-after-upgrading-to-231/#post-663101)
 * Done and found:
    Apparently it was the -Sideblog 2.0 A simple aside plugin- (
   Licensed under the GPL By Kates Gasis)
 * I guess I’d better upgrade to a new theme as well then 🙂
 * Once again, thank you very much for the help !

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Database errors after upgrading to 2.3.1’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 6 replies
 * 3 participants
 * Last reply from: [veroninja](https://wordpress.org/support/users/veroninja/)
 * Last activity: [18 years, 5 months ago](https://wordpress.org/support/topic/database-errors-after-upgrading-to-231/#post-663101)
 * Status: not resolved

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