Some clarification is in order here.
Remember, always, ONE THING AT A TIME.
First, you have two databases, PROD and TEST. The problem with the maxdatafiles exceeded was, I believe, with your PROB db, yes? Assuming this is your production database it must be your first priority.
Re: PROD
Is this database working?
Have you done the alterations to the controlfile trace dump, and is your specified parameter file path correct and pointing to an existing file?

Re: TEST; several questions:
Is this DB on the same machine as PROD?
Is it running in ARCHIVELOG mode?
What is your environment, OS, etc.
What exactly are you trying to do with test? We cannot deal with recovery issues just yet, and perhpas may not need to. You probably won't need to restore from tape.

Get back to me on this.