Recently I have upgraded one of my database from 9i to 12c.
I'm trying to connect oracle Oracle9i Release 184.108.40.206.0 - Production from 12c Release 220.127.116.11.0 - 64bit ,but I got message
ORA-03134: Connections to this server version are no longer supported
I can connect 9i to 12c by setting parameter in sqlnet.ora, SQLNET.ALLOWED_LOGON_VERSION=8 , but I cannot connect 12c to 9i.
Any solution for 12c to 9i connection or any alternate solution will also appreciable.