Just two very simple backup questions,
- I've read several books talking about whether we should backup the online
redo log files. Oracle Press book say yes but I remember some one post in this
newsgroup earlier saying that we don't need to backup the online redo log
files. Can some one verify that for me please?
- When I use the cold backup to recover the database to the point of failure
(database in archivelog mode), I think that I only have to restore all the
datafiles to its original location but definitely not the controlfiles? I
think if you restore all the datafiles to its original location and leave the
controlfiles as current. when we try to open the database, Oracle should
discover that the header of the datafile and the controlfile is not in sync
and should start the recovery process and ask for archive logs, right? (I
hope I am right, but I am not sure any more!) What if the backup utility that
we use force me to restore the controlfiles and replace those current
controlfiles with those old controlfiles? If I still have all the archive
logs from that cold backup onwards, can I force Oracle to start the recovery
process even though the controlfiles(restored one) and the datafiles
(restored one) are in sync already?
It's really urgent, please help me with that!
Winnie Liu
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Received on Mon Jul 20 1998 - 17:08:22 CDT
