Hi Gluu support, does Gluu require MYSQL? i found this in the oxtrust.log, i have configured Gluu with cache refresh, change the authentication to backend ldap service for your information. -- 2016-09-01 06:33:55,244 ERROR [org.gluu.oxtrust.util.DbConnectionUtil] Error while decrypting MySql connection password: Msg: java.lang.IllegalArgumentException: encrypted string was null or empty 2016-09-01 06:33:55,245 ERROR [org.gluu.oxtrust.ldap.service.InumService] MySQL database error: No suitable driver found for 2016-09-01 06:33:55,245 ERROR [org.gluu.oxtrust.ldap.service.InumService] java.sql.SQLException: No suitable driver found for