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Home -> Community -> Mailing Lists -> Oracle-L -> RE: one question on backup and restore
Yes it can. That's called "cloning". It's even possible to have one instance
deliver
redo logs to the other one, who is in constant recovery mode, applying the
redo logs
it received from the first one. If the first instance fails, the other one
is taken out
of recovery mode and started up right away. It's called "standby database".
You don't need
any additional hardware, just the network connection between the twho hosts
of the same type
(one machine must apply redo logs from another one).
There is also a third option, the most expensive one, but with the greates
survivability,
when two machines are accessing a shared array of disks. That will require
special adapters,
a private network connection between the two nodes and the software
synchronizing access to
the shared disk array. That opion is called RAC and the cost starts with
$10,000.
Fourth option, in which you would lose a few minutes of data is replication
software called
Data Guard. Essentially, you replicate one database to another in dicrete
intervals. The
technology is based on LogMiner. Now all that is left to you is to chose the
option appropriate
for your business need and negotiate the price with the Oracle Corp. sales
person. Piece of cake.
--
Mladen Gogala
Oracle DBA
-----Original Message-----
CHEN,JIN
Sent: Thursday, August 28, 2003 6:34 PM
To: Multiple recipients of list ORACLE-L
Hi Greetings,
I have such a plan but not sure if it is feasible. Please help! I install oracle server on two different machine (say A and B). In general, we run on one instance on server A. If we met any problem on server A, we copy all data files, control files and redo files plus spfile<SID>.ora to server B. Can server B startup that instance?
Is there any restriction on this plan? or it is totally impossible? Would you please advise why?
Thanks alot!
Jin
btw, they both are Solaris.
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Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: CHEN,JIN
INET: jinchen_at_ufl.edu
Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting servicesto: 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).
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Please see the official ORACLE-L FAQ: http://www.orafaq.net
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Author: Mladen Gogala
INET: mladen_at_wangtrading.com
Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting servicesto: 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 Thu Aug 28 2003 - 17:59:25 CDT
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