How to create a new database instance from an existing one?

Hi, I basically want to create a snapshot of a production
instance (version 8.1.7) for querying purposes. Would anyone
tell me the steps involved? What I did as follows:
1. Copy all data files to a new location
2. Modify init.ora accordingly. I believe there is no separate
control file for this version.
But when I startup the instance, got this error:
ORA-01103: database name 'TRITON' in controlfile is not 'HERCULE'
What is missing? Do these data files contains links to the
previous instance name?
Thanks for any help.

Hi All,
I need some help in recreating new database instance.
Here are the steps I have done so far:
1. Created a database with name 'LASTDB' using DBCA
2. Connected to RMAN.
3. RMAN>SET DBID=******; (of the source database)
4. Connect to target. RMAN>connect target SYS/*****;
5. Executed controlfile restore on RMAN.
RMAN>Run{
Allocate channel D1 Type DISK;
Set controlfile autobackup format for device type DISK to
\\<ip_address>\Backup\Prod\%F;
Restore controlfile from autobackup;
6. RMAN> ALTER DATABASE MOUNT;
Now got an error saying ORA-01103: database name PRODDB' in control file is not LASTDB
I tried using NID to change the database name but it's throwing an error that database is not mounted.
I have browsed a lot and found that I need to recreate a control file of the production database using ALTER DATABASE BACKUP CONTROLFILE TO TRACE and should edit the trace file. But it also says to shutdown the source database which is production database and I cannot try that.
Also I have tried adding a line to init.ora like lock_space_name = LASTDB. Also tried replacing everything from LASTDB to PRODDB but that didn't work either.
I have been trying to find a solution to this. Please bear with me as I'm a beginner and please let me know how I can fix the error.
I am running oracle 10.1.0.2.0 enterprise edition on windows 2000.
Thanks for your patience,
KG

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Message was edited by:
dingdong
Message was edited by:
dingdong

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Message was edited by:
BluShadow
remove quotes from password. oops! thanks padders

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