Here is how to encrypt a password/username for weblogic’s boot.properties or config.xml file java -cp /opt/app/bea/weblogic81/server/lib/weblogic.jar -Dweblogic.RootDirectory=/opt/app/bea/user_projects/domains/mydomain3 weblogic.security.Encrypt test_password I got it from: Anything simple: Oracle BEA Weblogic Server 10 “invalid pad byte” error