My Oracle connection is timing out?

I have a Pro*C program that runs indefinitely and I would like it to maintain an Oracle connection indefinitely too. The program is on the same machine as the database. However, if the Pro*C program does nothing for a while, and then tries to do an SQL request, it gets this:

ORA-03113: end-of-file on communication channel

It seems to me that the Oracle connection is timing out after no activity happens for a while. How can I stop this from happening?

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 Kirk Bauer -- CmpE, Georgia Tech -- kirk_at_kaybee.org -- Avid Linux User
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