I believe that it gets the log sequence number by comparing the change# to
the change# in the
v$log_history table.
Nancy
-----Original Message-----
Sent: Thursday, March 29, 2001 3:19 AM
To: Multiple recipients of list ORACLE-L
Lisa/List,
when we restore a datafile from a backup, oracle will check the change# in
the header of the datafile
and will try to match it with the one in the controlfile, correct ? that's
how oracle will know that the file
is out-of-sync, now oracle will prompt from the change# as well as the log
sequence number to apply !!
from where does it get the log sequence number ? is it sotred in each
datafile ? or oralce queries it
from v$log_history ?
Rahul
> ----------
> From: Koivu, Lisa[SMTP:[EMAIL PROTECTED]]
> Sent: Thursday, March 29, 2001 12:02 PM
> To: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'
> Subject: RE: identify which logs are need to start recovery
>
> Hi Rahul,
>
> I'm not sure if there's a v$ view that will tell you, I remember looking
> for this myself.
> However if you initiate recovery it will ask for the appropriate arclog,
> and you can always cancel out. During testing, I found that it will ask
> for every single one since the backup set from which you restored your
> datafile, regardless of whether or not it needs it (in this case, the
> datafile that was lost didn't contain any tables that had changed since
> the last backup. Go figure).
>
> HTH
>
> Lisa Rutland Koivu
> Oracle Database Administrator
> [EMAIL PROTECTED]
>
> NeoMedia
>
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>
>
>
> -----Original Message-----
> From: Rahul [ mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, March 28, 2001 11:13 PM
> To: Multiple recipients of list ORACLE-L
> Subject: identify which logs are need to start recovery
>
>
> usually i keep 2-3 previous archived logs, after switching and starting
> the
> hotbackup...
>
> but is there a v$ view to show which logs are needed to start the recovery
> ?
>
> TIA
>
> Rahul
>
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> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Rahul
> INET: [EMAIL PROTECTED]
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Author: Rahul
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