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5 Replies Latest reply: Feb 16, 2013 12:50 PM by onedbguru RSS

RAC rolling upgrade

user8779435 Newbie
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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

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