recovery question

From: Sweetser, Joe <Joe.Sweetser_at_infocrossing.com>
Date: Wed, 10 May 2006 13:16:56 -0700
Message-ID: <5CF4A34EE1FEA144B7474DC97E2F73A9537698@MAPI.iconnection.com>

In the middle of researching for a colleague, but thought I'd check here too.

Database 9.2.0.4.0
OS HP-UX B11.00

Wanted to restore database to 9:15am server time this morning (5/10/06). Last hot backup was (5/7/06). All database files and controlfiles were restored and then he did this:

<snip>

> sqlplus

Enter user-name: sys as sysdba
Enter password:
Connected to an idle instance.

SQL> startup mount
ORACLE instance started.
Total System Global Area 162525384 bytes

Fixed Size                   737480 bytes
Variable Size             109051904 bytes
Database Buffers           52428800 bytes
Redo Buffers                 307200 bytes

Database mounted.

SQL> Recover database until time '2006-05-10:09:15:00'; Media recovery complete.
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-01589: must use RESETLOGS or NORESETLOGS option for database open

SQL> alter database open noresetlogs;
Database altered.

<snip>

Customer said they did not see changes after 5/7. I had my guy run the following query to check on the archive logs timestamps:

select to_char(first_time, 'DD-MON-YYYY HH:MI:SS') from v$loghist;

and the last few lines returned were:

04-MAY-2006 11:07:37
04-MAY-2006 11:08:24
05-MAY-2006 07:41:00
06-MAY-2006 10:01:17
07-MAY-2006 12:00:26
07-MAY-2006 03:00:09

It seems that the database was not rolled forward to the time he wanted. And, of course, a new archive log has over-written the old archive log because the database was opened noresetlogs and blah, blah, blah.

He has all the old archive logs and is now restoring the Sunday backup again for attempt #2 and I am trying to help make this one successful.

Questions:
1. Should he see the archive logs being applied as it occurs? (I would think yes)
2. Should he open resetlogs to avoid any archive/redo issues when opening the database in the future? (Again, I lean towards yes given what just happened to him :-) )
3. It seems to me the real problem is that he restored the Sunday controlfile which only know about archive logs up to the time the backup was taken. Therefore, the recover command completed almost immediately without applying logs because there were no logs to apply. Soo, does he recreate the controlfile and then issue the same command plus "using backup controlfile"? Any other suggestions?

Thanks,
-joe

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Received on Wed May 10 2006 - 15:16:56 CDT