WordPress Multisite is not working: Error establishing a database connection

Created:

2016-12-18 06:54:57 UTC

Modified:

2017-08-08 13:43:59 UTC

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WordPress Multisite is not working: Error establishing a database connection

Applicable to:

  • Plesk 12.5 for Linux

Symptoms

If WordPress is configured as a multisite one and an application configuration script is executed (for example, website name changing, through Websites & Domains > example.com > WordPress ), then the following error appears:

    Error establishing a database connection

Extra / symbols can be found in each line of wp_blogs table of WordPress database.

Cause

This is Plesk bug with ID #APSI-454 which is planned to be fixed in future WordPress updates (which are shipped with Plesk as an application package).

Resolution

Delete the duplicated / symbols in each row of wp_blogs table.

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