Dns server retired- listeners hung

We are retiring one of our dns servers.
After rebooting new dns servers, we shutdown the "old" dns server, our database listeners either hang or crash. We have concluded that Oracle is caching the address of the old dns server. Does anyone know where, or how the listeners are tied to the dns servers?

Mike Kurth
Senior Oracle DBA
Wheaton Franciscan Services, Inc.
400 West River Woods Parkway
Glendale, Wisconsin 53212
414/465-4046 Phone
mkurth_at_wfs-ops.org

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