Open a browser and enter the address of the WebLogic Server Administration Console:

http://<hostname>:7001/console

Enter your WebLogic username and password (default is weblogic/weblogic1).

Under Domain Structure, click Deployments for your user domain.

Select the atg.ear file, and then click Delete.

Under Domain Structure, expand Environment for your user domain, and then click Servers.

Select the atg server, and then click Delete.

Under Domain Structure, expand Services for your user domain, and then click Data Sources.

Select the ATGProductionDS data source, and then click Delete.

Continue with Dropping the Evaluation Install Database.