You can authorize database users you have created to specific databases or revoke permissions from authorized database users.
Constraints
This operation is not allowed when another operation is being performed on your DB instance.
Procedure
Log in to the management console.
Click in the upper left corner and select a region and a project.
Click Service List. Under Databases, click GaussDB(for MySQL).
On the Instances page, click the target DB instance.
In the navigation pane, choose Accounts. On the displayed page, locate the target username and click Change Permission in the Operation column.
In the displayed dialog box, select one or more unauthorized databases and authorize their permissions to the account. To delete a selected database, locate the database and click × in the Operation column.