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Home -> Community -> Mailing Lists -> Oracle-L -> RE: RE: Lost a redo disk
Dick,
Thanks for the reply. I saw that Beth figured it out on her own.
When you said :
"In her case the first task was to point to a disk drive that's available in the first place. Rebuilding the control file has the same effect, it's just that you can 'rename' the missing log all in one step."
How did you anticipate getting a redo log file to point to? I've rebuild control files, renaming files into new directories. But you need to re-create the redo log file someplace - or are you suggesting that you recreate the control file minus the missing redo log file? Following that with adding a new set of redo members makes sense to me. Of course, there is a chance of lost data. But lets face it, that train left the station when the file was lost originally.
Thanks again for the reply.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
Sent: Wednesday, February 20, 2002 11:03 AM
To: Mercadante; Thomas F; 'ORACLE-L_at_fatcity.com'
Tom,
It would appear that Beth hit the right solution in the end. In the
past
when I've lost a redo log it was the active one which makes for a much
bigger
mess. What I believe Beth was running into is that when the database opens
it
tries to connect with each file that makes up the database. If it can't
then
the open stops right there & complains. In her case the first task was to
point
to a disk drive that's available in the first place. Rebuilding the control
file has the same effect, it's just that you can 'rename' the missing log
all in
one step. And true issuing a reset logs command does clear out all of the
online redo.
Dick Goulet
____________________Reply Separator____________________ Author: "Mercadante; Thomas F" <Thomas.Mercadante_at_Labor.State.Ny.Us> Date: 2/20/2002 10:58 AM
Dick,
Couldn't she just
"Alter database open reset logs" - wouldn't this create a new set of redo logs?
Beth - you didn't say whether you lost all of your redo logs - please do NOT do the above right away. I've never faced this, and am guessing a bit.
Tom Mercadante
Oracle Certified Professional
-----Original Message-----
Sent: Wednesday, February 20, 2002 9:03 AM
To: Multiple recipients of list ORACLE-L
Beth,
This is one of those conditions where not backing up everything gets one
in
trouble, on occasion. What I believe you'll have to do, which would be true
in
any case, is rebuild the control file. Now I'm not absolutely certain, but
I do
believe you can issue a "alter database backup controlfile to trace" command
on
a mounted database. That will at least give you the script you'll need.
Dick Goulet
____________________Reply Separator____________________ Author: "Seefelt; Beth" <Beth.Seefelt_at_TetleyUSA.com> Date: 2/20/2002 5:28 AM
Hi everybody,
This all started with the halon firing in our data center last night around
10pm
so you can imagine my condition.
I lost a disk that contained only redo logs.
When I try to open the database I get
ORA-00313: open failed for members of log group 1 of thread 1 ORA-00312: online log 1 thread 1: 'F:\ORACLE\ORADATA\OWBREPOS\REDO01.LOG' ORA-27041: unable to open file OSD-04002: unable to open file
I thought what I needed to do was switch the log files, drop the members
that
are on the bad disk, and then I'd be able to open the database.
So I mounted the database and did
alter system switch logfile;
and its telling me ORA-01109: database not open
I thought I could swicth logfile with the database mounted?
Could someone suggest the right steps I should take to recover?
Many TIA,
Beth
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Seefelt, Beth
INET: Beth.Seefelt_at_TetleyUSA.com
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Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Wed Feb 20 2002 - 10:38:25 CST
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