Hi, See my ideas inline. Best Regards, Martijn Best Regards, Martijn On Mon, Nov 18, 2013 at 07:03:32PM +0530, nilesh kumar wrote: > Hello All, > > NTP was running ahead of 5 hrs of normal time on Linux box. > > We have oracle database running on that server version 10g. > > Network team tried to synchronize the NTP and they synchronized the NTP on > the server. > > >From oracle database endi have few questions. > > I took a levelzero backup and all archive log backup immediately and asked > the application team to release all the conections to the database and > connection refresh so that none of the users are connected to the > database, and then bounced the db and again took a level zero backup. > > Am i missing any thing in this case that need to be taken care. > > few more question in mind:- > ---------------------------------------- > > Database was running and users were connected to the database during this > issue occured, if some users committed the transactions and when NTP was 5 > hrs ahead and does any inconsistency occur after the NTP was synchronized. The database ticks around scn's so, on a 'physical' level I do not expect inconsistencys. On a logical level (data-model), you may expect inconsistencys when 'sysdate' has been used to fill some rows. (Also think of RI where sysdate is used in a column) > > ---------------------------------------- > This has not occured but have a question for the below conditon. > If suppose the DB would have crashed after the NTP synchronization and > backup taken last sunday level zero, till what time would we able to > recover the DB, as few archives have generated after when the NTP was 5 hrs > ahead in time. > I think that a Point In Time recovery will be a little hazardous. In this case I would try to restore to a sequence number or even a scn. I _think_ that a restore would restore to the time before the re-syncronaziation (the first time that time x appeared). > Please advise > > Thanks > Nilesh > > > > -- > Thanks & Regards > Nilesh > Oracle DBA (sqlplus "/as sysdba" is my world) > > "As our circle of knowledge expands, so does the circumference of darkness > surrounding it."--Einstein > "All men die, few men ever truly live" -- Braveheart > "You can get help from teachers, but you are going to have to learn a lot > by yourself, sitting alone in a room." --Dr. Seuss > "Know me for what I do and for not what I am. Judge me for what I can do > and not for what I have done."-Unknown > "Don't walk in front of me, I may not follow. Don't walk behind me, I may > not lead. Just walk beside me and be my friend."- Albert Camus > "Never argue with an idiot. They drag you down to their level and then beat > you with experience." - Unknown > >
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