When a CAST Storage Service is installed, two additional users/roles are created (operator/guest) by default as listed below. An additional user (postgres) is already present out of the box:
If you would like to change the passwords for these users, there are various methods. CAST recommends either using PgAdmin (which is bundled with CAST Storage Service) or use a SQL query. Both are explained below.
See Action items after changing the operator user password when using AIP Console for more information.
Right click the operator/guest user and choose Properties. Then click the Definition tab and enter the new password in the Password field. Click Save to action the changes.
Using a SQL query
Use the ALTER USER statement, where username is operator/guest and where password is the new password you would like to set: