SQLDeveloper and Oracle Express

I have SQL Developer installed, and working.
Then I installed DAtabase Express; after that I've been unable to connect to any database like I used to. I usually use TNS connection, but now SQLDev is reading the TNSNames from the XP database, instead of the one in oracle home. I think that is the reason I can't connect anymore...
Any thoughts would be welcome.
Thanks for any help.

One thing I have noticed is that when you install an Oracle product using the installer (such as XE or a client) the installer puts the new product at the very beginning of your path. I normally have to edit my PATH variable to put my Oracle 10g Client home directory back at the beginning.
That being said, it is possible to have one TNSNAMES.ORA file refer to (include) others. See this forum thread from last April: Re: IFILE directives in tnsnames.ora generate apparently harmless errors
HTH.
Ed. H.

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