[askdba] Re: Question in HOT BACKUP

  • From: "Pepling, Todd C." <tpepling@xxxxxxx>
  • To: "'askdba@xxxxxxxxxxxxx'" <askdba@xxxxxxxxxxxxx>, "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 13 Oct 2004 16:22:58 -0400

Doesn't hurt to backup online redologs, but I wouldn't restore them.  They
contain the most recent commited transactions, so if you replace them with
copies made with last backup, you lose current data (and may have issues w/
controlfiles too).

-----Original Message-----
From: askdba-bounce@xxxxxxxxxxxxx [mailto:askdba-bounce@xxxxxxxxxxxxx]On
Behalf Of Chirag DBA
Sent: Saturday, October 02, 2004 4:40 AM
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Subject: [askdba] Question in HOT BACKUP


Hi,

I just appeared in an interview. 

When I was asked which filese I will copy for hot backup, I said redo too.

Cause I think they can help us always to recover database upto point of
time.

I was pulled a lot, but my only question that if not redo then how
will you recover yr DB upto point of failure, stopped the arguements.

M I true in this case? I have done expoerts in hot backups in
production database.

Can anyone clear my doubts? If u copy couple datafiles in hotback with
begin backup, n yr DB crashes... what will happen? Assume that an
archive log file is generated every 30 minutes and my DB crashed after
15 minutes of Last Archive file generated.

Can I go without REDO Log File ???

 - Chirag



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