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I want to say that is the error that I use to see when:
- SQL Developer lost it's connection to Oracle
- SQL Developer thought it was still connected
- I ran a query or tired to open a new object from the navigation tree.
But it's been a while since it's happened. These days I know when the database is shutting down and disconnect/reconnect before I doing anything. And even then I think it was only with older versions of SQL Developer. The latest one tells you that you've been disconnected.
Thank you very much for your reply. Let me find out why it is disconnected. Before I never got this error message until I started to run a big query on remote database. After this error message occurred, I am keeping get the same message even I run some query locally with restart the SQL Developer.
Again thanks a lot!