ORA-01017 Invalid Username/Password when connecting to 11g database from 9i client

Question

I\'m trying to connect to a schema on 11g (v11.2.0.1.0) from a PC with 9i (v9.2.0.1) client. It seems to connect fine to some schemas, but not this one - it comes back with

Answer 1

Credentials may be correct and something else wrong. I based my pluggable DB connection string on its container DB. Instead of the original parent.example.com service name the correct appeared to be pluggable.example.com.