Using data guard for migration pruposes.

Hi we are looking to consolidate a couple of databases onto a single server. One of the databases is our bi database which is currently running on a single server and it is running oracle 10.1.0.3 on suse linux 64 bit.
We also have an oracle 2 node cluster running on RHEL4 64 bit linux itanium. which is our sote database.
We are looking to create a physical standby server of the store database onto a new server and storage array and also we are looking to migrate the bi database over to the same server/storage platform and would like to use ASM as the storage option for both of the database once they are migrated and also replicated to the new server.
I guess my question is...can I run multiple different versions of oracle on the same server or is this just a bad idea? we know that we need to have the same version 10.2.0.3 for the physical standby server which is a different version than the bi datatabse so would it be better idea to upgrade the bi database to also be running 10.2.0.3 before we are to try and replicate it to the new hardware?
I hope this is not confusing,
Thx.

Lets start with what physical Data Guard standby is ... it is the creation of a row-for-row, block-for-block duplicate of a primary production database.
If the version are not identical that is impossible.
If the data contained within them is not identical that is impossible.
If you want to merge databases I would suggest Transportable Tablespaces ... nothing is faster and safer.
Once you have you data merged you can then create a physical Data Guard standby for purposes of replication if you wish.

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Hi,
I haven't been able to get a straight answer on this, so hopefully someone can help me.
We currently have two physical servers, both licensed to run Oracle Database 11gR2 EE, however one is running a cpu-based license (primary server/production) and the other is running a named-user based license (secondary server/soon-to-be-standby server).
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That is so because there is not much to say about it: You create your standby as described in the Data Guard doc (RMAN DUPLICATE)
Then you ship the Archivelogs to the standby and do recover database there. Technically easy. No higher protection mode possible, though.
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Security is not cheap.
Kind regards
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How to setup Data guard for SAP database?

Can someone please tell me how to setup data guard for SAP databases?
Thanks,
Abhi

Hi Abhi,
have a look at OSS 105047 - Support for Oracle functions in the SAP environment you find this under
14
Oracle Data Guard
You can use "Physical Standby".
You cannot use "Logical Standby".
You are allowed to use Fast Start Failover (FSFO) but SAP Support is not provided.
You can use Data Guard Broker.
You can use Maximum Performance Mode, Maximum Availability Mode and Maximum Protection Mode.
In the case of Maximum Availability and Maximum Protection, you must pay particular attention to a fast network connection in order to avoid performance problems.
Maximum Protection causes the primary database to terminate if problems occur in the standby database.
And here you find on Oracle white paper from 2010 http://www.oracle.com/us/solutions/sap/wp-ora4sap-dataguard11g-303811.pdf
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Hello -
Has anyone (or can send me some links) set up recovery at a remote site - and not used Data Guard? For example, shipped off logs via FTP, applied the logs, and kep the DB in recovery mode?
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Mlike,
This manual procedure is described in the Dataguard Concepts manual for 10gR2, hopefully is this your unmentioned version (BTW what happens if you do type your version? Does your boss beats you up for doing that?). I don't know why someone wants to replace something robust by something unreliable by default, using FTP. Not only unreliable, also unsecure!
Sybrand Bakker
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hi
datapump is terribly slow, make sure you have as much memory as possible allocated for Oracle but the bottleneck can be I/O throughput.
Use PARALLEL option, set also these ones:
* DISK_ASYNCH_IO=TRUE
* DB_BLOCK_CHECKING=FALSE
* DB_BLOCK_CHECKSUM=FALSE
set high enough to allow for maximum parallelism:
* PROCESSES
* SESSIONS
* PARALLEL_MAX_SERVERS
more:
http://download.oracle.com/docs/cd/B28359_01/server.111/b28319/dp_perf.htm
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P.S.
For maximum throughput, do not set PARALLEL to much more than twice the number of CPUs (two workers for each CPU).
Edited by: g777 on 2011-02-02 09:53
P.S.2
breaking news ;-)
I am playing now with storage performance and I turned the option of disk cache (also called write-back cache) to ON (goes at least along with RAID0 and 5 and setting it you don't lose any data on that volume) - and it gave me 1,5 to 2 times speed-up!
Some says there's a risk of lose of more data when outage happens, but there's always such a risk even though you can lose less. Anyway if you can afford it (and with import it's OK, as it ss not a production at that moment) - I recommend to try. Takes 15 minutes, but you can gain 2,5 hours out of 10 of normal importing.
Edited by: g777 on 2011-02-02 14:52

Still need to do full backup after using data guard?

In our system, there is a physical standby database in data guard configuration. Is there still a need to do full backup and incremental backup?

Jackliusr wrote:
In our system, there is a physical standby database in data guard configuration. Is there still a need to do full backup and incremental backup?Preferred to have full backup daily.
May be you can perform failover of your standby, in case there is no availability on primary database. Then do you think the standby system stability is same as primary and can give same performance?
standby location can be too far and this is only if in case of disaster.
Another case, lets suppose your standby is behind than primary for 4-5 days due to some issues. At the same time your production crashed then you may have chance to loose 4-5 days fo data. So recommended to have full backup always from primary database.
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Using Data Guard and hot backups - 9.2.0.6.0

Hi all,
I have an existing 9.2.0.6.0 database that is setup in a DataGuard environment - one primary database with a physical standby in a separate datacenter. It is all setup and it works beautifully. On our primary database, we currently have 2 different types of backups we are doing - we do an export of the main schema (all of the application data is all in this one schema) 4 times a day, and we do a full database hot backup once a night.
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If we ran into some kind of a data issue, it would probably be quickest and easiest to restore data from one of the exportsIt would be quickest to failover to stand by database than restroing from dump file. After all you maintaing stand by db for that reason.
How can you restore database up to the latest changes using export/import ? You may have to restore using rman and apply the logs.
You can backup from stand by database. You do not need to back up primary.

Install Guide of Active Data Guard for 11g R2 on Linux

Friends,
Searched for this on tahiti.oracle.com which redirects you to the oracle's docs.
Anyone knowing where to find installation guide for active data guard of 11g R2 on linux?
Thanks much.

This article looks useful
http://dbastreet.com/blog/?p=16
Also you may want to check Larry's book on 11g Data Guard. It has a complete chapter on Active Data Guard.
http://bit.ly/cGcgEw

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sgardiner,
Unfortunately it doesn't seem to work any more since 10.3.2
The procmon tool shows that ZCM 10.3.2/3 agents query file attributes of BundleMograte.xml but don't read the content of the file.
SR with Novell about this issue is open.
Regards,
Harald
Originally Posted by sgardiner
Has anyone got any experience using the bundlemigrate.xml file. I saw the coolsolution article on this and thought it would it would fit my environment. But haven't got it to work.
We are currently using ZFD4, rather than migrate apps into ZCM I have built new apps in ZCM.
The problem we have is that we have multile sites with the same app but differently GUIDs in ZFD4 (multiple app containers without using GUID sync). So using the bundlemigrate.xml file, seemed likes the only solution with or without an app migration.
I have built a kix script to read the registry of the PCs and match the GUIDs of ZFD4 to ZCM. But it appears that the bundlemigrate file is ignored on PCs. I was wondering if anyone had any knowledge on this approach and if I need to trigger another file on the PC/registry key during the migration for bundlemigrate to be read. This is to eliminate apps being redeployed to hardware.
I have an SR open with Novell, but this doesn't look good as ZFD4 is not supported. However, this doesn't help me move to a supported environment.
My current script.
Reads the registry and outputs to a file with GUIDs.
This file is read back in if a match is found to a bundle in ZCM, a temporary bundlemigrate file is built.
The agent is deployed with an autoit, passing it registration information, based on computer information.
The new bundlemigrate file is copied into location.
Run Once key added to perfrom a zac refresh
The machine is rebooted
my bundlemigrae file looks like:-
<?xml version="1.0"?>
<BundleList xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://novell.com/zenworks/bundle/MigrateZEN7" >
<Bundle ID="54686252bbf72464a7d642c6bac3319d" Version="4" Installed="TRUE" />
</BundleList>
Any assistance welcome.

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I am trying to do the same thing.
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Can I use data guard to create a RAC standby database for a non RAC primary

Hi,
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Oracle 10.2

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However since you have are using You may follow below sequence.
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2. Perform a switchover.
3. Shutdown the Old primary (which is standby now).
4. Install CRS and RDBMS on the old primary and it's new node.
5. Modify the cluster_database=TRUE and cluster_database_instances=<required number of instances>.
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6. Introduce the database and instances to the OCR using SRVCTL add command.
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Using data guard for migration pruposes.

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