New or Existing Connections Intermittently Fail on AIX using Port 1521. Error: ntresnt[1]=73 (Doc ID 2148740.1)

Last updated on JUNE 10, 2016

Applies to:

Oracle Net Services - Version 11.2.0.4 to 12.1.0.2 [Release 11.2 to 12.1]
IBM AIX on POWER Systems (64-bit)

Symptoms

Connections using port 1521 are failing intermittently.

Connections on ports other than 1521 are working normally.

Oracle Net traces of the client and the corresponding listener show a reset handed up from underlying: ntresnt[1]=73. This occurs on both sides simultaneously.

ntresnt[1]=73 = Connection Reset by Peer

 

Client Trace

 

Changes

May have recently upgraded to Oracle 12

Cause

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