Query Window "Connection must be open" error?

Hi:
If I right-click on an Oracle connection and select "Query Window" from the menu I get a query window, but no matter what I try to do, hitting the Execute button results in :
ERROR
Connection must be open for this operation.
Why does it think this connection is not open?
Thanks.

If you have MetaLink, you might take a look at Note:404340.1 (ODP.NET: Connection must be open for this operation)
Perhaps that will be of some help.
- Mark

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Connection must be open for this operation

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