How to manage oracle 9i databases from 11g ?

Is there any option similar to 9i OEM's "Add Database to tree" in 11g ?
currently I monitor 30 databases, all running 9iR2, using enterprise manager console. I had removed Oracle 9i from my system to install 11g, so is there anyway to monitor 9i database from 11g or do I have to re-install 9i into a new home ?
My system is Windows XP and most databases are on linux.

What, precisely, do you mean by "11g Enterprise manager console"? Are you talking about a web-based interface? Or a Java-based console application?
If you have not done a separate OEM install, you're most likely using the database control, as web-based interface that allows you to manage a single database. You would need to install the Grid Control in order to manage multiple databases through the same interface.
You're probably right, that's why I asked the question. Perhaps the original poster meant the "10g Enterprise Manager console". Perhaps he meant the "11g Enterprise Manager Database Control". Perhaps he meant the "11g Enterprise Manager Grid Control". Or perhaps he meant something different (i.e. SQL Developer is a console application that ships with 11g and has a variety of reporting scripts).
The OP for the 11g installation could not have possibly made a separate OEM install, OEM is not included in 11g any more and he has not mentioned trying such intall. The OP was clear enough, so IMO there is no confusion, 30 9i databases, 1 11g database. There was not a 10g in between. I would not go so far as to say an 11g grid control, since there is no such grid control, the latest version for grid control is 10.2.0.4.0 for R2 and 10.1.0.3.0 for R1. And SQLDeveloper, yes, it is a java application included with 11g, and you can launch scripts from there, but in no way it is a managing environment the way the OP pretends.
Regards.
~ Madrid
http://hrivera99.blogspot.com

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