Does Oracle 10G supports 2 Oracle homes on same Host?

Hi,
I have installed oracle 10 G R2 on windows OS. I have installed oracle twice, i.e. i have two oracle homes. After installation these are the problems i am facing:
1. I am not able to start oracleDBconsoleorcl, OracleOraDb10g_home1TNSlistener services. I am not able to get sql command prompt for the oracle home1.
2. But I am able to start oracleDBconsoleorcl2, OracleOraDb10g_home2TNSlistener services. I am able to get sql command prompt for the oracle home2.
Can anyone please tell me what the problem is? Someone told me that in 10G i cannot have two Oracle homes. Is it true? if yes then waht is the work around for this problem.
Thanks
Varun

Why have you installed it twice?
You only need a single home for running any number of instances. (though I question the logic of the person who runs multiple database instances on the same platform as sop)
Running multiple homes are usually a solution when having to run two different version instances. E.g. installing Oracle 10G in addition to a 9i installation in order to create a 10G database to use for porting the 9i database, after which the 9i database and installation will be trashed.
Running two homes of the same version is silly - you're simply duplicating a truck load of static files, executables, libraries, message files and so on.. for what purpose?

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