When upgrading Monitor from 10.x to 11.x, you may see the following error in the error log:
SQL0030: The current database schema version "10.0" does not meet
the minimum required version: 12.0.
To fix this issue, set the database details after you are done with the configuration wizard from Configure -> Platforms -> Databases. Before this step, you can truncate all tables and run the table creation script ActionalServerCreationScript.sql. This solution is tested on Oracle 11G (R2 & Enterprise Edition) and with ojdbc7.jar.
The database details verification step will complete successfully and AMS server setup will finish.