DB links Tuning, performence etc.

I recently inherited a number of database with a few links between them.

1. Do DBLINKs generate network traffic when communicating between two instances on the same machine?
2. What are some good suggestions for performence tuning and monitoring DB links?

Thank your for your input in advance

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Before you buy. Received on Tue Jan 25 2000 - 15:45:11 CST