Data Guard Switch Over
i am new to Oracle and need a lot of help, but for now i need help with Data Guard switchover. we have dataguad configuered and data was shiping from node A to node B, after switchover we were not able to connect to database via client, i found out we need to switch service name. so i configuer our primary node with following, after switching over node B cannot ship archive logs to Node A plus the service_name is not changed to standby. i haven't yet setup dataguard broker so we are switching over via sqlplus. please help