What is the controlfile format?

Hi:
I am studying the binary-format of controlfile.AS it is known that controlfile contains useful information,such as path of datafiles and SCN, but where are they organized in physical controlfile?

Yes, the reason is that you have enable "Controlfile Autobackup".
You are specifying RMAN to take the backup of the controlfile in the format "/rmanbackup/orcl/ctl_%u". So you are getting the 1st controlfile backup as ctl_tnn17r1o . Later, since you have enable autobackup of controlfile, RMAN takes the autobackup of the controlfile which is the 2nd file c-3169926800-20120120-00
You can check if the controlfile autobackup is enabled or not using:
RMAN>show all;     Handle:     Ora_83
Status Level:     Newbie
Registered:     Nov 8, 2009
Total Posts:     474
Total Questions:     177 (114 unresolved)Why so many unanswered questions ? If you have not got the answers in the right way, then ask them again in the same thread rather than leaving them as unanswered
Edited by: srp on Jan 20, 2012 10:39 AM

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