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“Error establishing a database connection” With XAMP, MySQL and WordPress

Thought some people might find it useful to see how I managed to solve this…

So, this week I determined to do a little more work on the code for this blog – a new plugin.  However, as I have recently updated my laptop I needed to re-install all the tools – Eclipse, Ant, XAMPP – and setup the XAMPP test instances of the blog.

I ran up XAMPP and used phpMyAdmin to setup a test WordPress database and user.  Then I used Eclipse to edit the wp-config.php file for the XAMPP installation and finally a little ANT script to rebuild the blog into the XAMPP directory.

At this point, I expected to launch immediately in to the blog at “http://localhost:8080/www.kajabity.com” ready to do the setup and install a backup from the live blog to play around with.

No such luck!  Instead I got the following:

Screenshot - Error establishing a database connection

Well, I tried all the obvious things – checked the password, username, checked everything was up and running.  Nothing obvious.  I added and removed the user and database several times – but to no avail.

I tried Google – and found a few others with suggestions, but nothing that worked.

But, eventually, I noticed that the one detail was a little odd.  When creating the users I had left the “Host” setting to be the default “Any host” – which results in the “Host” column in the Users list showing “%”.

So, I changed the user (using the Edit Privileges link) and set the Host to be “localhost” – using the “Create a new user with the same privileges and … delete the old one from the user tables.” option.

That worked.

I’ve shown the user that worked (wordpress_user) and another one that causes the problem (badwp_user) in the screenshot below:

Screenshot - phpMyAdmin showing a "good" and "bad" user.

Hope that helps some of you.

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Posted in WordPress

12 comments on ““Error establishing a database connection” With XAMP, MySQL and WordPress”

  1. RS says:

    Just wanted to thank you as I was having this problem and it was driving me crazy. Nothing I could find helped aside from this which seems to have been posted just 5 days ago. Just in time!

  2. peshu says:

    create a database manually in phpadmin. point that database name in your wp-config.php script and run the script.

  3. Ben says:

    Thank you…

  4. raghavendar says:

    The problem may be due to high memory usage and you may not have created the swap file. Follow the link to get the procedure to create swap file

    http://teknosrc.com/mysql-linux-ubuntu-crashing-create-swap-space-memory-solution/

  5. dr0g0 says:

    Thank you, looked at various fixes but your artitcle helped as I had not set the user to localhost.

    Thanks

  6. Ugochukwu says:

    Thanks very much, you do not just helped me out, youvteqch me something new.thanks ones again.

  7. Snyders says:

    Thank you, only page that show this real solution. You rock, man!

  8. Sjoek says:

    Hi Simon, Thank you so much for this! Googled allot but this is the only good answer i could find on the whole www.

  9. alexandra says:

    THANK YOU! It has eaten all my neurons so thank you for postin this.

  10. shailender says:

    thank u so much buddy.. wasted my precious 2 hour thanks..

  11. sam says:

    Thank you so much.

    All along, I had assumed that Any host meant any host including localhost.

    I have been struggling with this for days until your post saved me.

    Thank you

  12. Brad says:

    Thanks alot. It really solved the issue.

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