Title: Multiple WordPress installations on the same database
Last modified: August 19, 2016

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# Multiple WordPress installations on the same database

 *  [ucarmetin](https://wordpress.org/support/users/ucarmetin/)
 * (@ucarmetin)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/multiple-wordpress-installations-on-the-same-database/)
 * Hey, I need some help with multiple wp installations on the same database.
 * The problem is as following:
    I’ve developed a WP theme locally and now it’s 
   time to publish it. My customer already has a wp 2.9.1 based running website.
   The plan is to create a new folder on server and install a clean wp 3.0.1 and
   theme there. However, there is only one database available and therefore I have
   to figure out how to install wp 3.0.1 and run it along with wp 2.9.1. Both installation
   must use the same database (at least I reckon) so that they will have the same
   content. In other words the same data will be used by two different installations.
   The new installation won’t go live until all the posts, approximately 500, are
   successfully migrated to and adjusted for the new installation.
 * Any idea on how to do that?
    Regards!

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [Samuel B](https://wordpress.org/support/users/samboll/)
 * (@samboll)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/multiple-wordpress-installations-on-the-same-database/#post-1751284)
 * you can install in same db
    [http://codex.wordpress.org/Installing_Multiple_Blogs#Single_Database](http://codex.wordpress.org/Installing_Multiple_Blogs#Single_Database)
 * I would do a clean install in a folder with your theme
    get everything ready 
   then move to new install to root [http://codex.wordpress.org/Moving_WordPress#Moving_WordPress_Within_Your_Site](http://codex.wordpress.org/Moving_WordPress#Moving_WordPress_Within_Your_Site)
 * then import old db to new site
    [http://codex.wordpress.org/Backing_Up_Your_Database](http://codex.wordpress.org/Backing_Up_Your_Database)
   [http://codex.wordpress.org/Restoring_Your_Database_From_Backup](http://codex.wordpress.org/Restoring_Your_Database_From_Backup)
 *  Thread Starter [ucarmetin](https://wordpress.org/support/users/ucarmetin/)
 * (@ucarmetin)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/multiple-wordpress-installations-on-the-same-database/#post-1751499)
 * Hey Samuel,
 * Thanks for the quick response and instructions.
    I’ve followed the steps you 
   recommended and successfully installed another WP on the same database. However
   at this stage I’ll not be able to move new installation to the root because there
   are big revisions to be made on the posts.
 * I’m planning to import all the posts to this new installation and then make the
   modifications required on the posts. After that I’ll move this new installation
   to the root directory. Would that be possible? Will I encounter any problem?
 * Btw, there is another problem. The old database tables contain almost 500 posts
   and when I create a backup following instructions [here](http://codex.wordpress.org/Backing_Up_Your_Database).
   The backup is successfully created and it’s about 25 MB. When I try to import
   it into the new tables, it generates an error saying the file is too big so that
   it cannot be imported. Any idea on how to get around this problem?
 * Thanks again for the assistance. I do really appreciate your help.
    Regards!
 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/multiple-wordpress-installations-on-the-same-database/#post-1751503)
 * > Would that be possible?
 * Yes – although I’d personally use the approach outlined in [Giving_WordPress_Its_Own_Directory](http://codex.wordpress.org/Giving_WordPress_Its_Own_Directory).
   I find it much easier.
 * >  Will I encounter any problem?
 * In theory, no. People move WP sites all of the time.
 * > Any idea on how to get around this problem?
 * Could you do an export/import (see the Tools sub-menu)? I don’t think you can
   import a 2.9.1 db backup into a 3.0.1 db without problems as the db structure
   will have changed.

Viewing 3 replies - 1 through 3 (of 3 total)

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## Tags

 * [database](https://wordpress.org/support/topic-tag/database/)
 * [server](https://wordpress.org/support/topic-tag/server/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 3 participants
 * Last reply from: [esmi](https://wordpress.org/support/users/esmi/)
 * Last activity: [15 years, 7 months ago](https://wordpress.org/support/topic/multiple-wordpress-installations-on-the-same-database/#post-1751503)
 * Status: not resolved

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