Thanks for reply.
1) I can have two listeners on same port that 1521 (Verified after testing).
Both the listener are up and running.
2) The issue was as below and it's strange:
Windows 2008R2 has new interface like commandprompt and it is windows power shell. I was setting ORACLE_SID first and was logging into the database. But "ENVIRNMENT CANNOT BE SET IN THIS WINDOWS POWER SHELL". Then I did it from normal windows command prompt and it could set the env veriables to logg into the proper db.
Thanks and regards,
Glad you're sorted now.
1) Is what I thought.
2) Interesting issue, haven't come across that as our DBs are on Sun/Solaris platform.
Thanks for posting your findings, hopefully it'll be useful if someone has the same problem!