Data guard implementation

Hi ALL
i want to install a data guard on windows servers.
So i got two windows servers set up.Now i need to implement data guard.
Since both the servers are new and only oracle in installed,it will be easy to implement.So before proceeding i want to take all your suggestions.
Thank you one and all........................

Hi, i recommend you read the next documentation before start with the configuration,you can design your environment careful attention to detail and get more performance in your implementation.
Oracle® Data Guard Concepts and Administration
10g Release 2 (10.2)
http://download.oracle.com/docs/cd/B19306_01/server.102/b14239/toc.htm
Regards.

Similar Messages

Data Guard Implementation Importing one schema will it reflect in other?

Hi All,
I have succesfully implemented data guard (Primary) and Physical Standby
for 10g R2.
It works fine. I would like to know if on the primary if I remove one schema and import the data/objects using a dump file will it get reflected in the standby?
ie we have to refresh our primary database with actual production data by dropping one user (prod) and its objects. And I will run the import(dump file) in order to bring the data from production
Will this refresh the data in the standby ?
Thank u all
Rajesh Alex

The answer is Yes, that's the goal of the dataguard configuration, to replicate all changes from the primary to the standby database.
Any DML or DDL is recorded by the redolog mechanism, and the redo information is transported from the primary to the standby database where the information is applied, exactly the same way it was applied at the primary database. DDL commands (create, alter, drop) are considered transactions against data dictionary tables, so they are recorded just like any other DML transaction on the redolog mechanism and transfered just the same to the standby.
The time it will take to get replicated at the standby database will depend on the kind of Dataguard configuration you have, if you have a high avilability or a high performance configuration.
~ Madrid

Data Guard-Log shipping

Hi,
I have Data Guard implemented on Oracle 10gR2 10.2.0.1 database. OS-Windows 2003 Server. I am facing the following error
ORA-16146: standby destination control file enqueue unavailable
I get this alert in my alert log. After sometime it gets resovled on its own. When I check logs status...all logs are applied on standby and no gaps are found. What may be the possible cause for it? And solution ?

Thank you for those kind words. :^) We try hard. WHat you are hearing is not really different. I am just providing a few more details on Data Guard's redo transport that further clarifies what you have heard, at least I hope so :^)
All I was trying to do is clarify what process is actually shipping redo and when. The syntax for the LOG_ARCHIVE_DEST_n parameter up to 10g is ARCH, LGWR ASYNC or LGWR SYNC. The syntax says LGWR but in fact underneath the LGWR process starts up an LNS process for any ASYNC or SYNC standby destination and it is that process that actually has the network connection to the standby. This way if there is a network hang it is the LNS process that gets stalled and the LGWR process (when in SYNC mode) will wait for NET_TIMEOUT seconds before deciding that the standby is unreachable and continuing to do its work ignoring that standby destination until it is reachable again (something discovered by the ARCH ping process).
If you say ARCH for a standby then one of your ARCn processes will ship the redo when it is in the form of a complete archive log file. Hence nothing gets shipped to an ARCH standby until a log switch happens at the Primary.
The reason everybody says that LGWR ASYNC or LGWR SYNC is better is that the redo is shipped at the time it is written to the online redo log file hence your potential data loss is much much much less than with ARCH. And I agree with that sentiment.
Please note that from 11g on the syntax is ASYNC or SYNC. The LGWR keyword is no longer necessary (although it will still be parsed) and ARCH has been deprecated as ASYNC is so much better. ARCH will work for backwards compatibility but will go away at some point.
Does this clear things up for you?
Thanks.
Larry

Data guard-- very slow replication.

Hi Experts,
I am facing problem in an Oracle 10G R1 data guard implementation running on Solaris 10 64bit platform.
The primary database site has got 2 Sun servers running on RAC while the parallel standby site has got exactly the
same hardware. A LOGICAL standby policy is in use.
->>>The standby database is taking some 30 mintutes to get 10-15 new insertions from the primary database, ironically the system is not under production so no question about systemload.
* How can I tune the data replication time gap between the primary site and the standby site.
* Any pointer to some documentation 'd be highly appreciated.
Many thanks
Nitin

Hi NItin,
Here is my Logical standby: SQL Apply too slow on this matter.
Did you make any changes to following settings of logical standby parameters:
EAGERSIZE
PARALLEL_MAX_SERVERS
APPLY_SERVERS
LCR Cache size i.e. MAX_SGA
Please read before Note:603361.1 and Note:312434.1.
Please let me know if you decide to change something. I can advise some more or less appropriate values but you need to test them thoroughly.
Best Regards,
Alex

How to implement Data guard

hi all
I am new to data guard.I want help to implement dataguard.so can anybody tell me link for good document,video to implement dataguard.

I am new to data guard.I want help to implement dataguard.so can anybody tell me link for good document,video to implement dataguard.What is the version is it 10g or 11g?
is it Windows/Unix?
You can follow emre baransel mentioned documents and also some more here.
if 11g you can implement dataguard without any backup. However mentioning both the links. Go through.
*Creating a Standby Database on a new host [ID 374069.1]*
*How to create physical standby database with 11g RMAN DUPLICATE FROM ACTIVE DATABASE [ID 747250.1]*
*Step By Step Guide To Create Physical Standby Database Using RMAN [ID 469493.1]*

Implementing Data Guard

I am in need of Step by Step instruction set to implement Data Guard on 11gr2 OS linux.

Hi again;
Please also see:
http://wiki.oracle.com/page/DataGuard+%3A+Step-by-Step+Instructions+for+Creating+a+Physical+Standby+Database
http://www.oracletutorial.info/oracle-data-guard-11g/videos/oracle-data-guard-11g-step-by-step/
Regard
Helios

Administrating Data Guard without complexity of Grid Control. Possible?

I wonder if someone can shed some wisdom about implementing and administrating Data Guard without the complexity of Grid Control. Don't get me wrong, I love the Data Guard feature provided by Grid Control, but installing Grid Control just for the sake of administrating Data Guard sounds a bit overkilling. Not to mention that I still have hard time getting Grid Control properly installed on a Windows Server 2003 box (keeps getting 503 Service Unavailable and the Servlet error).
I was told by a friend that Oracle 9 has something called EMCA (Control Assistant) that allows you to administrate Data Guide. Searching for any file containing the phrase "emca" under the Oracle directory ("c:\Oracle\product\10.2.0\db_1\BIN"), I found emca.bat and some related files. Does it mean the EMCA is actually existing in Oracle 10.2G (for Microsoft Windows Server)?
Any comment? Feeling clueless right now. :-I ....
Deecay

I have set up Dataguard 9iR2 on Linux SLES8 and use Data Guard Broker to manage switchover and failover operations. It comes with the database and is command-line based.
The documentation walks you through the setup phases quite nicely.
http://www.oracle.com/pls/db92/db92.to_toc?pathname=server.920%2Fa96629%2Ftoc.htm&remark=docindex
I would suggest a read of some of the documentation on metalink surrounding dataguard and the broker before attempting to use either ;)

Protection type for Acrive Data Guard

Hi all,
I am looking at implementing a 11G R2 active data guard solution and need to do live reporting from the physical standby database.
I need confirmation of the protection mode I will need. (I think it's Maximum Protection).
Many thanks
VicC

Sorry, I just realized that I misunderstood your Question as "What Protection Modes can I have with FAST-START FAILOVER".
For Real-Time Query, you can be in any Protection Mode.
Kind regards
Uwe Hesse
http://uhesse.wordpress.com

Oracle EBS R12 - DR setup using Oracle Data Guard

Hi,
Our customer has implemented Oracle EBS R12 (12.0.6) on a Two Node RAC on HP-UX env. The application Tier also has Two Nodes(Admin Tier and Web Tier).
Oracle Clusterware - OCR and Vote Disk are on Raw Devices and the EBS database is on ASM.
Customer wants to implement a DR solution with Oracle Data Guard with only 2 servers - 1 for the Database Tier and 1 for the Application Tier on the DR Site.
I would like to know if this could be done by following note: 452056.1? I would also like to know if there are other useful docs.
Thanks.
Thiru

Hi,
Customer escalated this issue to Oracle and they came up with this reply:
They can implement Disaster recovery solution from RAC to NON RAC using Solution A which use RMAN utilities for backup and recovery.
While now AMP Application Management Pack gives the capablitiy to build non RAC from RAC Envioment, In future AMP will be capable also to support cloning of DB with Data Guard.
Details
Solution A - Using RMAN:
For Release 12 customers, you can clone from a RAC to RAC (like to like) or RAC to non-RAC. This is using RMAN scripts to take a copy of the db when it’s in archive mode. if you’re leveraging any disaster recovery tools like data guard, the above solution should work fine…perhaps some fine tuning to the procedures
Solution B - Using AMP in the future release
For Release 11i , Release 12.x customers, AMP would be offering a new cloning solution that wouldn’t have dependency on Rapid Clone. This solution leverages the strengths of EM Grid Control in provisioning or cloning targets such as databases. This would be an advance solution that would support:
o A full-fledged scale down cloning
o Cloning of EBS deployed on Shared File System
o Hot and Cold mode cloning
o Quantifiable reduction in clone time for the entire EBS system
This solution would be leveraging EM grid Control’s DB provisioning pack’s clone utilities, that are quite advanced and support cloning of DB with Data Guard.
The recommendation is to start trialing AMP version 3.0, making the purchase and implementing within the Enterprise. As we release the new version of AMP (release 3.0.1), Customer would be in a better position to quickly implement the latest features
Can anyone let me know if the solution A suggested will work.
Rgds,
Thiru

Looking for Active Data Guard in Oracle 11g Release 2 References

I want to reach out to customers who have implemented Active Data Guard in production (preferably 11.2), so that we can develop some
customer references that in turn will benefit other customers. The customers who get selected for such references may further be selected to publish their case study directly in oracle.com and/or invited as a customer co-speaker in the upcoming Oracle OpenWorld at San Francisco (Sep 19-23, 2010). Being a customer co-speaker at OOW means they get a free pass to the full conference (regular price for that is $1795-$2495).
Please send any follow-ups to [email protected]
Thank you.
Larry M. Carpenter
Oracle Data Guard & MAA Product Manager

Hi Larry,
This is Bhavik Desai Oracle -DBA@Amazon. I do have couple of Active Standby running on 11gR2 On RHEL 5 64-Bit platform.
Most of the databases are reporting on (DSS Having 2-4 TB in size) having FSFO configured.
It would be a pleasure if i can provide any benchmarking to you on this.
Regards,
Bhavik Desai

Oracle Replication - Encrypted Data and Oracle Data Guard

We are working on a high availability architecture for one of our new projects. The preliminary architecture has Oracle 10g Release 2(10.2.0.2) production database (primary database) running on Solaris10 server for OLTP operations. And a production replicated database (standby database) is running on another node running on Solaris10 server for reporting, ETL data extractions etc. The plan is to implement Oracle data guard (DG) to replicate data between primary database and standby database (logical standby database). As a side note, there is going to be one to two minute time log for data synchronization between primary and standby databases.
We need to encrypt sensitive data (like SSN, Credit Card No. etc) in the primary production database. Initially we thought this can be achieved by using Oracle Transparent Data Encryption (TDE), this is a new encryption method Oracle came up with their 10g version. But the issue here is Oracle TDE doesnt support setting up the logical standby database (using Oracle data Guard) for reporting on the second node. I have confirmed with Oracle on this, so we are kind of stuck in the middle on this new requirement. So our next option is to look out for any third party vendors who can resolve this puzzle, and looking for your help for any suggestions.
· Do you know any vendor who can support both data encryption and data replication for Oracle databases?
· Do you know any vendor who can support just data encryption for Oracle databases?
(I am thinking if we can find a vendor, we would like to ask them if they have any technical issues working with Oracle data guard for data replication and use some kind of technique to decrypt the data on the standby/reporting database.)

You can always use the DBMS_CRYPTO or DBMS_OBFUSCATION_TOOLKIT to encrypt the data rather than using TDE. You may have to do some work on the key management side, though, but it shouldn't be too painful.
Justin

Data Guard, Grid Control 11, GI 11gR2, and DB 10gR2

Hi,
I'm seeing a rather odd behavior, and I'm hoping someone else has already been through this and knows what I'm doing wrong.
I have an installation of Grid Control 11.1 (recently patched) which I am using to create Data Guard replication of some 10gR2 database instances. For some confusing reason, sometimes when I use the GC wizard to add the standby database, it creates the listener for the new database in the EM Agent's OH/network/admin/listener.ora. Other times, it creates it in the 10gR2 DB's OH/network/admin/listener.ora. When it does the former, creation of the standby DB seems to work fine, but when it does the latter, not so much.
If it matters, my primary DB is 10.2.0.4 on 10.2 grid infrastructure, and my standbys are 10.2.0.4 on GI 11.2.0.2.
I have applied the latest PSU to my agents, so they are all the same version, so I'm confused as to why this might be happening. Has anyone else seen this issue?
Thanks,
Bill

My recommendation would be to not use OEM Grid Control to create your standby.
Even when it is working properly ... it does not create what I would consider a good implementation. Just as I don't consider the vanilla installation of the Oracle database by the OUI (all control files and redo logs in the same directory with the datafiles) very good.
You'd be far better off hand crafting your standby using two listeners ... one for public and one for replication.

Data Guard Vs Golden Gate

Hi Experts,
I am looking for High Availability and Disaster Recovery architecture for my data layer i.e. Oracle Database 11g R2
We have two physical locations and the distance between two sites is around 20 miles.
Site 1:
We already implemented RAC setup with two node in site 1.
Site 2:
We are going to implement standalone database. (Not RAC)
My requirements:
1. Both databases at Site 1 & Site 2 should be replica of each other.
2. Both databases should be in sync always.
3. Site 1 is active and Site 2 is stand by.
4. Client applications on Site 1 & Site 2 should always talk to RAC database on Site1.
5.. If RAC at site 1 goes down completely, then ONLY client apps should connect to Site2 database without human intervention.
How can acheive my requirement ? I was doing some research & found two solutions. 1. Active Data Guard 2. Golden Gate.
Questions:
1. Do Data Guard and Golden Gate offers same features ?
2. Which products offers solutions to all my requirements or Do I need to use both ?
3. If Data Guard and Golden Gate are different from each other then What is the difference between them and what are the overlapping features among them ?
Thanks

1. Do Data Guard and Golden Gate offers same features ?No, there's simple compare here :
http://www.oracle.com/technetwork/database/features/availability/dataguardgoldengate-096557.html
2. Which products offers solutions to all my requirements or Do I need to use both ?Data Guard will work and you don't need anything else. I cannot speak to Golden Gate.
3. If Data Guard and Golden Gate are different from each other then
What is the difference between them and what are the overlapping features among them ?Again this document :
http://www.oracle.com/technetwork/database/features/availability/dataguardgoldengate-096557.html
1. Both databases at Site 1 & Site 2 should be replica of each other.
Data Guard can do this.
2. Both databases should be in sync always.
Data Guard can do this.
3. Site 1 is active and Site 2 is stand by.
Data Guard can do this.
4. Client applications on Site 1 & Site 2 should always talk to RAC database on Site1.
You can set your tnsnames to handle this and more. Using DBMS_SERVICE you can create an alias
to handle this.
Ex.
ernie =
(DESCRIPTION =
    (ADDRESS_LIST =
       (ADDRESS = (PROTOCOL = TCP)(HOST = primary.host)(PORT = 1521))
       (ADDRESS = (PROTOCOL = TCP)(HOST = standby.host)(PORT = 1521))
       (CONNECT_DATA =
       (SERVICE_NAME = ernie)
)5. If RAC at site 1 goes down completely, then ONLY client apps should connect to Site2 database without human intervention.
You can set your tnsnames to handle this and more.
Best Regards
mseberg

Init SID .ora during configuration of Data Guard - advice required

Hi All,
I am looking to implement data guard across 2 RAC clusters. One cluster will be primary and the other is for Disaster Recovery.
I have already set up the two 11g R 2 RAC clusters on RHEL 5 and now need some pointers to good docs for data guard install.
Can some one direct me to good step by step info for configuring data guard between to RAC clusters - detailed explanations of each step would be useful too, in particular around the init.ora file configuration changes between the primary and DR sites
Much appreciated
Steve

Hi Steve,
look at the MAA Whitepapers:
http://www.oracle.com/technetwork/database/features/availability/oracle-database-maa-best-practices-155386.html
There are very good ressources in setting up RAC DG environments like:
Data Guard 11g Installation and Configuration Best Practices on Oracle RAC
Rapid Oracle RAC Standby Deployment: Oracle Database 11g Release 2
Setup Guide: Creating a RAC Logical Standby Database for a RAC Primary Database
Client Failover in Data Guard Configurations for Highly Available Oracle Databases
a.s.o.
Sebastian

Oracle 10gR2 Data guard physical or logical standby server?

Hi
We are planing to implement an Oracle 10gR2 data guard standby server for DR purposes, I found out that there are two type of standby server which is logical and physical standby server. I want to know which one is preferable? in term of complexity of setup and maintenance?
regards

Well it depends on what you mean by maintenance. I found the physical standby to be very little trouble at all ; however the logical standby has restrictions on it that the physical standby does not. In essence the physical standby merely digest archive logs; where as the logical standby uses logminer like functionality to process sql statements much like Oracle streams.
Hope that helps,
-JR jr.

Data guard implementation

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