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Are existing Oracle database sessions / connections re-established after a short network outage?

edited Sep 8, 2014 5:00AM in Database Networking (MOSC) 2 commentsAnswered


Database is 11.2.0.3.

We are expecting a short duration (30-60 secs) network outage that will affect our database server. What would be the impact on existing connections/sessions to the database server? The SQLNET.EXPIRE_TIME is set to 10 minutes so the sessions should not be cleaned up.

- Would existing sessions be re-established or would they all be lost, ie. would the client and server keep trying to communicate while the network is down and then re-establish the same session when the network is back up?

- Would 'in-transit' transactions complete, or would they be rolled back?

I've done a fairly extensive search but can't find a definitive answer on what happens to existing sessions.

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