How to open a standby database for use?

First, let me state that I am not a DBA nor am I a systems guy; I'm a software developer.
At work, we recently built a new virtualized db server by cloning our disaster recovery (DR) database server. The DR database was kept in 'standby' mode (I think that's the correct term) and was synched with production daily via archive logs.
So now, we have this new virtualized server that has a clone of that 'standby' database on it, and I need to 'open' that database so that it's usable (ie, no longer a standby db). How do I do that?? We recently lost our DBA so this has fallen into my lap.
From searching the web, I've found all sorts of instructions. It seems that I need to issue some commands via SQL*Plus? But as what user? From where do I issue these commands (I assume from the virtualized server)? And what are the commands?
This is Oracle 10g v10.2.0.3.0 running on Solaris 10 for x86.
Thanks!
Dave

Hi Dave, I do this each time we do a DR test. I have 10.2.0.3 in physical standby mode.
First, I make sure I have flashback turned on (here is what I've done):
connect / as sysdba
startup nomount
alter database mount standby database;
alter database flashback on;
alter database recover managed standby database through all switchover disconnect using current logfile;
exit;Activate the physical standby:
alter database recover managed standby database cancel;
alter database activate physical standby database;
alter database open;
exit;When completed with DR test we return the database back to physical standby mode:
Find the SCN when the physical standby was activated (this is so we can flashback to that point in time)
select standby_became_primary_scn from v$database;connect / as sysdba
flashback database to scn <this is the value returned from above>;
alter database convert to physical standby;
shutdown immediate
startup mount
alter database recover managed standby database disconnect from session;
exit;I hope that helps,
Michael Cunningham
Edited by: Michael C on Nov 10, 2011 8:59 AM
Edited by: Michael C on Nov 10, 2011 9:00 AM

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http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/create_ls.htm#SBYDB00300
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Is there anyway to open a Standby database up to date as of a certain time? I'm currently using the 2 commands to get close to the time required.
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Maybe
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8:42 open the databases and start recovery
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Shows sequence 75
and "TO STANDBY" for switchover status
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8:50
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Media recovery complete.
SQL>
8:52
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Database altered.
Check status
TO STANDBY and sequence 78Still need to check alert logs and do another log switch. It checks out so the quick test works.
However the quick test is incomplete since there was no before and after data in the test and the time period was very short.
Andy may be right, but I would test, test test. ( if you do please let us know the results )
Thanks Andy!
Best Regards
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Later
After sleeping on this I decided my first thought is probably correct. You cannot go back in time and still be in sync. While the test statement did not error or produce any alert log entries, it probably did nothing. Oracle is smart enough to know you cannot have your Cake and eat it too.

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Hello,
I hope this link helps you out...
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/rcmbackp.htm
http://www.dbasupport.com/oracle/ora10g/manual_standby.shtml
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Hi,
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http://download.oracle.com/docs/cd/B28359_01/server.111/b28294/manage_ps.htm#sthref740
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