
For more information see SQL Server Books Online. Check if instance name is correct and if SQL Server is configured to allow remote connections. A network-related or instance-specific error has occurred while establishing a connection to SQL Server. Mssqlmng failed: Named Pipes Provider: Could not open a connection to SQL Server. PLESK_ERROR: Error: The test connection to the database server has failed because of network problems: Unable to connect remote Microsoft SQL Server to Plesk in Tools & Settings > Database Servers > Add database server:
Websites configured with PHP 7.2 or lower version fail to establish a database connection after updating MariaDB to v10.2.35 or v10.3.26: Malformed communication packet. How to restore Plesk system databases from a Plesk daily/pre-upgrade dump. Unable to add external database server in Plesk: 1044 Access denied for user.
MySQL service fails to start on a Plesk server: Table 'er' doesn't exist. A PHP-based website fails to open: Failed to connect to MySQL: Access denied for user (using password: YES). Unable to access Plesk with 500 error message: No such file or directory. Unable to export MySQL dump for a domain in Plesk: insufficient privileges to SHOW CREATE.
Unable to delete MS SQL database in Plesk: User does not have permission to alter database, the database does not exist, or the database is not in a state that allows access checks. Please DISCARD the tablespace before IMPORT
Unable to restore the Plesk psa database: ERROR 1813 (HY000) at line 104: Tablespace for table '`psa`.`tablename`' exists.
How to fix InnoDB corruption cases for the MySQL databases on Plesk for Linux?.