5 Replies Latest reply: Feb 16, 2013 2:50 PM by onedbguru RSS

    RAC rolling upgrade

    user8779435
      Hi all

      I'm performing rolling upgrade of cpu patch at rac environment

      I open a connection to the database (using service) and it connects to the first node. Then I shutdown the first node to perform an upgrade and check the connection, but it doesn't switch to the second node automatically, but returns TNS error. What about if it's a production database and there're a lot of online scripts running on that node?

      However, I tried it again and it automatically switched wihout any error. What can be reason?
      thanks

      John