This article describes how to change the vCenter Server database username (this article refers to the username as "user ID"). This article also describes how to change the database password. The user ID and password must be changed when the SQL database credentials on a remote SQL Server are changed.
Notes:
To change the vCenter Server user ID for SQL database connections for vCenter Server 5.x and earlier:
Note: Before making any registry modifications, ensure that you have a current and valid backup of the registry. For more information on backing up and restoring the registry, see How to back up and restore the registry in Windows.
To update the password used by the vCenter Server for database connections to the SQL Database, use one of these options: