ORA-12535: Timeout Error Is Thrown When using NAT
(Doc ID 270096.1)
Last updated on JANUARY 18, 2025
Applies to:
Oracle Net Services - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]Oracle Net Services - Version 8.1.7.4.0 to 10.2.0.4.0 [Release 8.1.7 to 10.2]
Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Gen 2 Exadata Cloud at Customer - Version N/A and later
Information in this document applies to any platform.
This problem can occur on any platform.
Oracle clients wanting to connect to a remote database server through a firewall that uses Network Address Translation (NAT).
Symptoms
ORA-12535: TNS:operation timed out error is thrown to the client when it attempts to connect to a remote database server through a firewall that uses NAT.Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |