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Control file [message #493126] Sat, 05 February 2011 04:32 Go to next message
muktha_22
Messages: 527
Registered: December 2009
Senior Member
Hi All,

please some one help me on this.
I know it is a awkward question, but still i need to be clear.

1)How a single control file is enough to have all the transaction's SCN no for older transactions.
Eg - A transaction has the SCN 01 and after a month the new transaction's SCN is 502.
Is the control file holding all those (01 to 502) SCN in it or just will have the latest SCN no (ie - 502).


Regards:
Muktha
Re: Control file [message #493132 is a reply to message #493126] Sat, 05 February 2011 06:18 Go to previous messageGo to next message
John Watson
Messages: 8931
Registered: January 2010
Location: Global Village
Senior Member
The controlfile stores the current SCN, exposed in v$database:
select current_scn from v$database;
Are you under the impression that the controlfile stores the commit SCN for transactions? Why would that be necessary?
Re: Control file [message #493146 is a reply to message #493126] Sat, 05 February 2011 09:03 Go to previous message
Michel Cadot
Messages: 68648
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator
Maybe you should read the following book. All the questions you posted are answer in it.

Database Concepts

Regards
Michel
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