My Oracle Support Banner

ORA-12157 when using 10g Oracle client while 9i client on same machine connects (Doc ID 1174803.1)

Last updated on JANUARY 23, 2020

Applies to:

Oracle Net Services - Version 9.0.1.1 to 10.2.0.5 [Release 9.0.1 to 10.2]
Information in this document applies to any platform.

Symptoms

When trying to connect to a remote Oracle Database using a 10g Oracle Client, the connection fails with an "ORA-12157: TNS:internal network communication error"
However, when connecting to a remote Database using a 9i Oracle Client on the same client machine and using the exact same TNS files, the connection succeeds.



Changes

Migration of the Oracle client from 9i to 10g

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.