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Not able to connect Oracle 9i DB from Oracle 12c DB

2830628Jul 7 2016 — edited Feb 17 2017

Problem Description : We have oracle 12c database

sqlplus CBC@QUID

SQL*Plus: Release 12.1.0.2.0 Production on Tue Jul 5 14:48:45 2016

Enter password:

ERROR:

ORA-03134: Connections to this server version are no longer supported.

Error Codes : ORA-03134

We have set below parameter in sqlnet.ora file and restart listener.

SQLNET.ALLOWED_LOGON_VERSION_CLIENT=8

SQLNET.ALLOWED_LOGON_VERSION_SERVER=8

SQLNET.AUTHENTICATION_SERVICES=(NONE)

NAMES.DIRECTORY_PATH=(TNSNAMES, ONAMES, HOSTNAME, EZCONNECT)

But still we are facing this error :ORA-03134: Connections to this server version are no longer supported.

This post has been answered by AnatoliAndrei on Jul 7 2016

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Added on Jul 7 2016

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