DataGuard 11gR2

Hi all,
Is DataGuard license free in 11gR2?
What is the difference of:
1. Dataguard standby replication and
2. Active dataguard?
Are they both free in 11gR2?
Thanks,
pK

Thank you
You can't start redo apply after open (of course read only) standby database in oracle 10g but can in 11g.
In 11g, when you issue a startup command which opens the standby database read only mode like 10g.
and then you can put the standby database in apply mode. When yo do this, it becomes an Active standby.
Standby databases always open in read only mode(Active or not) unless you do fail over, switch over, snapshot standby
Regards

Similar Messages

Oracle Dataguard 11gR2 -- 10gR2 compatibility

Hi,
The short question is: with physical standby, is Dataguard compatible with different source/destination database releases?
I am planning to perform an upgrade from Oracle 10gR2 to 11gR2. I have a Production 2 node RAC and a geographically seperate physical standby DR site 2 node RAC using Dataguard.
Naturally (I think) I would upgrade Production first and then DR later. During the time when my Production is on 11gR2 and my DR is on 10gR2, can I still maintain a physical standby with Dataguard? My gut tells me that is not possible since the data dictionary is going to be completely differently between the 2 releases. I would need at least 1 week before I am able to perform the upgrade on the DR side, and have no possibility of getting more disk space for a temporary logical standby.
Conversely if it is backward compatible, can I perform the upgrade on the DR site first then use Dataguard to keep the DBs in sync until the next weekend where I upgrade the Production?
Any other options I can exercise with the boundaries that I have? (No additional disk space can be allocated)
Thanks in advance.

hi,
you cannot have different version at primary and DR sites..
There is procedure for this.. Please read oracle documentation for step by step procedure:
http://download.oracle.com/docs/cd/B28359_01/server.111/b28294/upgrades.htm
Please follow steps from above documentation:
Perform the following steps to upgrade to Oracle Database 11g Release 1 (11.1) when a physical standby database is present in the configuration:
1. Review and perform the steps listed in the "Preparing to Upgrade" chapter of the Oracle Database Upgrade Guide.
2. Shut down the primary database.
3. Shut down the physical standby database.
4. Install the new release of the Oracle software into a new Oracle home on the physical standby database system, as described in the Oracle Database Upgrade Guide.
5. Mount the physical standby database.
Note: The standby database should not be opened until the primary database upgrade is completed.
6. Start Redo Apply on the physical standby database.
7. Install the new release of the Oracle software into a new Oracle home on the primary database system as described in the Oracle Database Upgrade Guide.
8. Upgrade the primary database as described in the Oracle Database Upgrade Guide. Note that the physical standby database will be upgraded when it applies the redo generated by the primary database as it is upgraded.
9. Open the upgraded primary database.
10. If Active Data Guard was being used prior to the upgrade, then refer to Section 9.2.1 for information about how to reenable it after upgrading.
Regards
Rajesh

Create dataguard 11gR2 uisng Grid Control fails

Hello !
I'm testing to use data guard using grid control. I have a fresh standard database created with dbca
When i start the gui i come to the Add Standby Database: Database Location screen
I add the information required and select next, then I get:
Internal Error has occurred. Check the log file for details.
I'm trying io locate the log files, but not sure where they are. Where shall I look ?
I have also tested to create a standby db using rman and it worked fine.
Appreciate your comments.
Thanks
Magnus

Hi!
The logfiles for OMS are, if you use GC11g:
$MIDDLEWARE_HOME/<Instance_Name>/user_projects/domains/EMGC_DOMAIN/servers/EMGC_OMS1/sysman/log
or something similiar
If you using GC 10, than the logfiles are: $oms_ORACLE_HOME/sysman/log
kIND REGARDS1

Dataguard 11gR2 - Apply Patchset Max Availability

Hello All,
I would like to apply the April PSU to single instance with a 1 physical standby.
When I try to switch off the log transport I get the error ORA-16627.
My question is whether I need to temporarily change the protection mode to max performance for the primary while I shutdown and apply the patchset to the standby?
I am using the note : *How do you apply a Patchset,PSU or CPU in a Data Guard Physical Standby configuration [ID 278641.1]*
Thanks in advance for your help.
Jan S.
ENV
=============
Primary : 11.2.0.3
Standby: 11.2.0.3 Physical
Protection: Max Availability

I would like to apply the April PSU to single instance with a 1 physical standby.
When I try to switch off the log transport I get the error ORA-16627.
My question is whether I need to temporarily change the protection mode to max performance for the primary while I shutdown and apply the patchset to the standby?check this link http://blog.grid-it.nl/index.php/2011/05/24/how-is-data-guard-maximum-protection-mode-protecting-your-data/
Please read below completely.
ORA-16627:
     operation disallowed since no standby databases would remain to support protection mode
Cause:      This status is returned in the following situations:
- The broker rejects an attempt to change the configuration's overall protection mode since it could not find any online, enabled standby databases that support the proposed protection mode.
- The broker rejects an attempt to enable the configuration if it determines there are no online, enabled standby databases that support the overall protection mode.
- The broker rejects an attempt to disable or remove a database that, if disabled or deleted, would result in no remaining standby databases that can support the configuration's overall protection mode.
- The broker rejects an attempt to set the configuration offline if doing so would violate the configuration's overall protection mode.
- The broker rejects an attempt to set a standby database offline if doing so would violate the configuration's overall protection mode.
- The broker rejects a switchover attempt if doing so would violate the configuration's overall protection mode.
- The broker returns this error during a health check.
Action:      - If changing the overall protection mode, confirm that at least one standby database satisfies the new protection mode.
- For enable failures, confirm that at least one standby database has a LogXptMode configuration property setting that supports the current overall protection mode.
- For delete and disable failures, confirm that at least one other standby database has a LogXptMode configuration property setting that supports the overall protection mode.
- For state change failures, confirm that at least one other standby database has a LogXptMode configuration property setting that supports the overall protection mode. If setting the configuration OFFLINE you may have to downgrade the protection mode setting to maximum performance beforehand.
- For switchover failures, confirm that at least one other standby database has a LogXptMode configuration property setting that supports the overall protection mode. If your configuration contains a primary database and a single standby database, ensure that the LogXptMode configuration property established for the primary database supports the overall protection mode. After the switchover, the old primary database will become the standby database and its LogXptMode configuration property setting must support the overall protection mode.
- For health check error, confirm that at least one standby database has a LogXptMode configuration property setting that supports the current overall protection mode.

Oracle Active Dataguard 11g - Passwords

Hi all
Environment description: Production database, 11.2.0.3 version, standalone running on Solaris and an Oracle Active Dataguard database in read only mode, same version and operating system.
Question: The users passwords and sys/system passwrod (orapw ) could be different in the ADG environment? I mean, could the orapwd file and user password be changed in the Dataguard database ?
Thanks a lot.

user1687821 wrote:
Hi All,
Please suggest a good step by step guide to implement Oracle Active Dataguard on Oracle 11g, OS : RHEL 5.4
Have searched a couple of documents, but ending up with physical or logical dataguard setup guides...
Please suggest end to end steps guide for Active Dataguard Implementation
DB : Oracle 11g Release 2
OS : RHEL 5.4
ThanksHi,
Active dataguard is option after configuring dataguard.
You can put standby database in Open(read only) mode also you can enable Recover(MRP) while open so this can be used for reporting purpose too.
Please refer below links for configuring them.
http://www.oracle-class.com/wp-content/uploads/2011/01/dataguard/11gR2%20Physical%20Data%20Guard%20Setup%20%20project,%20with%20Active%20Data%20Guard%20option.pdf
http://www.databasejournal.com/features/oracle/article.php/3834931/Using-Oracle-11gs-Active-Data-Guard-and-Snapshot-Standby-Features.htm
http://www.oracle-base.com/articles/11g/DataGuardSetup_11gR2.php
http://www.oracle.com/technology/deploy/availability/pdf/maa_wp_11gr1_activedataguard.pdf
HTH.

List backup executed on primary 11gR2

I execute a command LIST BACKUP on the RMAN of the primary db of the Dataguard 11gR2 when connected via recovery catalog and it shows now backup at all.
But run that same cmd on standby, it shows all the backup. The backup is run on standby only.
Can anyone explain ?

See "Using Files On a Standby Database"
under http://download.oracle.com/docs/cd/E11882_01/server.112/e17022/rman.htm#BAJCEFEG
to actually copy from the standby itself.
Per "11.7 Performing Backup Maintenance in a Data Guard Environment" at
http://download.oracle.com/docs/cd/E11882_01/server.112/e17022/rman.htm#BAJHDFIH
"+File sharing attributes state that files on disk are accessible only at the database with which they are associated, whereas all files on tape are assumed to be accessible by all databases. RMAN commands such as BACKUP and RESTORE, as well as other maintenance commands, work according to this assumption. For example, during a roll-forward operation of an image copy at a database, only image copies associated with the database are rolled forward. Likewise, all incremental backups on disk and all incremental backups on tape will be used to roll forward the image copies. Similarly, during recovery operations, only disk backups associated with the database and files on tape will be considered as sources for backups."+
However, I haven't verified or tested this.
Hemant K Chitale

Step by Step guide to implement Active Dataguard 11g

Hi All,
Please suggest a good step by step guide to implement Oracle Active Dataguard on Oracle 11g, OS : RHEL 5.4
Have searched a couple of documents, but ending up with physical or logical dataguard setup guides...
Please suggest end to end steps guide for Active Dataguard Implementation
DB : Oracle 11g Release 2
OS : RHEL 5.4
Thanks

user1687821 wrote:
Hi All,
Please suggest a good step by step guide to implement Oracle Active Dataguard on Oracle 11g, OS : RHEL 5.4
Have searched a couple of documents, but ending up with physical or logical dataguard setup guides...
Please suggest end to end steps guide for Active Dataguard Implementation
DB : Oracle 11g Release 2
OS : RHEL 5.4
ThanksHi,
Active dataguard is option after configuring dataguard.
You can put standby database in Open(read only) mode also you can enable Recover(MRP) while open so this can be used for reporting purpose too.
Please refer below links for configuring them.
http://www.oracle-class.com/wp-content/uploads/2011/01/dataguard/11gR2%20Physical%20Data%20Guard%20Setup%20%20project,%20with%20Active%20Data%20Guard%20option.pdf
http://www.databasejournal.com/features/oracle/article.php/3834931/Using-Oracle-11gs-Active-Data-Guard-and-Snapshot-Standby-Features.htm
http://www.oracle-base.com/articles/11g/DataGuardSetup_11gR2.php
http://www.oracle.com/technology/deploy/availability/pdf/maa_wp_11gr1_activedataguard.pdf
HTH.

ASM_PRIMARY_to_ASM PHYSICAL STANDBY

HI All,
Can any one please share Some good documents for creating - ASM primary to ASM standby creation .
any links...
PRIMARY AND STANDBY:
in ASM : Datafiles in +DATA01 archive in +FRA01
DB - 11gR2
OS - Linux-64 bit.
using +FRA01 for archive dest.
Thanks,

Hello;
http://askdba.org/weblog/oracle11g/dataguard/11gr2-rac-dataguard-setup-using-asm/
Data Guard &#8211; ASM primary to filesystem physical standby &#8211; using RMAN duplicate | 老庞闲话
Dataguard DB/LOG FILE NAME CONVERT has been set but files are created in a different directory (Doc ID 1348512.1)
Clarification on Data Guard Broker Config Files in ASM (Doc ID 1508241.1)
Creating a physical standby from ASM primary (Doc ID 787793.1)
Best Regards
mseberg

Standby setup in 11g R2 RAC to single node

Hi,
How can we setup 11gR2 Standby Setup : Primary Database 2 Node RAC to Standalone Standby Database

ashish wrote:
Hi,
Our requirement is to create single node standby of a 11g R2 RAC 2 node database.To implement there is not much changes in functionality of dataguard, Except some new features like
1) Active dataguard
-- Where you can run MRP even in open status, so that it can be only readable.
2) password file on standby should not be created, it should copy from primary and rename it.
3) from 11g you can perform duplicate from active database without backup.
& so on.
To build a stand alone standby from 2-node RAC, MAA pdf is better one
http://www.oracle.com/technetwork/database/features/availability/maa-wp-10g-racprimaryracphysicalsta-131940.pdf
http://www.oracle.com/technetwork/database/features/availability/twp-dataguard-11gr2-1-131981.pdf
*How to create physical standby database with 11g RMAN DUPLICATE FROM ACTIVE DATABASE [ID 747250.1]*

Help with setting a 2nd Standby Database

Hi,
I have an active DataGuard 11gR2 with a physical standby actively running on Linux.
Now, I need to add a 2nd physical Standby database (for reads only) to this environment, can someone please point to a resource/document which discusses the steps which are involved?
Thanks much
-Sravan

Hello;
One option is to setup a Cascading Standby. I tested this last spring and I'm happy to share my setup notes.
www.visi.com/~mseberg/Data_Guard_Cascading_Standby_Setup_and_Test.pdf
Also worth noting if you have Active Data Guard you don't need a second Standby, ( license for active Data Guard required ).
Best Regards
mseberg
Edited by: mseberg on Nov 22, 2011 7:09 AM
For additional information see :
Data Guard Concepts and Administration
12.1.3 Configuring Both Physical and Logical Standby Databases ( Oracle document B14239-05 )
In this case you could use the Logical Standby as you "Reader" database.

OEM and Standby Monitoring

Hi,
I recently configured a physical standby database with dataguard (11gR2).
In OEM (principal database) main screen, there is an option DBConsole. When clicking in such option, it opens a screen that shows a table that would present information about the standby enviroronment (e.g. log apply in standby database). But it shows a message that there is no data available. Does anyone know if there is any agent that should be configured/started in order to present such information in OEM?
Regards

If you want to monitor a dataguard environment,you need centralized gridcontrol,not standalone dbconsole. Dbconsole does not work for a read-only physical standby.
Werner

Configuring Data guard

Hi,
I am planning to configure data guard 11.1.0.7 on Redhat Linux 5. I would just like to have suggestions regarding failover/switchover strategy. I would like gurus here to shared their knowledge about how to configure the failover/switchover. I have following points in mind regarding this.
1. Add an entry for the standby database in the connect string's "Address" portion so that if primary is not available after failover/switchover, client automatically start connecting to the standby
OR
2. Afgter failover/switchover, change the database alias in the DNS and primary host name alias should start pointing to the standby database host so that now clients start connecting with the standby database not.
Or, any other preferred way?
Thanks in advance
Salman

Uwe Hesse, I saw your document. How we can implement it in a RAC environment wheren we have two nodes RAC (client side load balancing is on) and we have a single node Standby. In this case, we would need to add another row in ADDRESS parameter in TNSNAMES, but, how it will be handeled because client side load balancing is on and if we add standby ADDRESS, load balancing will also try to use this third entry of Standby database.Refer some more documents
Configuring Oracle Database 11g with Oracle Data Guard
http://download.oracle.com/docs/cd/B28359_01/server.111/b28282/configbp006.htm
http://www.oracle.com/technetwork/database/features/availability/twp-dataguard-11gr2-1-131981.pdf
11gR1 Data Guard Portal [ID 798974.1]
Switchover&Failover
Oracle10g: Data Guard Switchover and Failover Best Practices [ID 387266.1]

Moving ASM disks from Host to Host

Hello all,
should anyone have tried this or should anyone be able to point ou some sort of documentation for this issue would greatly be appreciated;
I have two hosts that have an Oracle Database resident on filesystem that is storage replicated from between to disk groups and that on the destination the control file is used to "import" the new database.
My issue would be if anyone has tired the same with ASM and if would it be possible to have a certain scenario;
Shutdown database on source,
Replicate the disks via Storage,
Scan for the disks on the destination
<Tweak the disks so that they can be imported ?>
Import the disks to the ASM Instance
Fire up the database on destination
If anyone has some usefull insight would be most apreciated.
Regards,
Francisco

Hi,
at the bottom of my last post, I did point you to some whitepapers on the ASM side, identifying what needs to be done in case of an ASM diskgroup.
So yes this will work with ASM, you simply have to mirror the whole luns and this should work.
However regarding the other points:
=> Replicating via. Oracle is definitely faster than storage. Just think of it: Oracle only needs to forward the changed of a block (never the whole block) with the help of the redologs, whereas Storage mirroring always has to take the whole block (+Redologs). So this is roughly double the data needed to be transferred than Oracle. Additionally blocks which Oracle does not need to forward (like ASM header/tablespace header information). Hence if you say it is slower, this cannot physically be the case. Only exception is if your infrastructure for network is not configured the same as the storage network is (or you have an error in setup).
=> DR with Oracle Dataguard is way below 5 Minutes if you configure it correctly. If you setup ASM mirroring between both nodes and setup a cluster than you have no downtime at all.
=> For the last point look at Snapshot Standby. This is exactly what they need + it provides DR all the time.
http://www.oracle.com/technetwork/database/features/availability/twp-dataguard-11gr2-1-131981.pdf
Here is a case study about this:
http://www.hitachi.co.jp/products/it/storage-solutions/techsupport/whitepaper/pdf/11gdg_wp_v1_e.pdf
Regards
Sebastian

Can read-only standby be cascaded from another DR physical standby

we are going to have one two-node RAC database in the primary site (site A), one Data Guard maintained standby database in the DR site (site B) and one ACTIVE Data Guard maintained read-only database for reporting (site C, on the same subnet as site B). My question is what is the best practice for the data guard configuration in terms of the redo log transportation, Is it possible to set up relay of redo log transport from one physical standby to another (database version 11gR2, data guard in Maximum Performance Mode):
1)     A->B->C (minimum overhead to primary site A, maximum delay to report site C)
2)     A->C->B (minimum overhead to primary site A, maximum delay to DR site C)
3)     A->B; A-C (maximum overhead to primary site A, minimum delay to site B and C)
Are all three configuration possible, which one would you recommend?
Any discussion document or white paper about the above configuration you can point to for me (I gather the scenario may be rare, but multiple physical standby instances set up are not uncommon, if to ignore active data guard part) ?
Edited by: user10786648 on 24/07/2012 17:40
Edited by: user10786648 on 24/07/2012 17:47
Edited by: user10786648 on 24/07/2012 23:36

Hello;
Welcome to the forum.
minimum overhead to primary site A, maximum delay to report site - ( I don't believe in emergency reports, Primary should rule. )
Will refer to these white papers :
Data Guard Redo Transport & Network Best Practices
http://www.oracle.com/technetwork/database/features/availability/maa-wp-10gr2-dataguardnetworkbestpr-134557.pdf
And
Rapid Oracle RAC Standby
http://www.oracle.com/technetwork/database/availability/maa-wp-11g-racone-standby-501088.pdf
And of General interest
Oracle Data Guard with Oracle Database 11g Release 2
http://www.oracle.com/technetwork/database/features/availability/twp-dataguard-11gr2-1-131981.pdf
Oracle Data Guard Technical White Papers
http://www.oracle.com/technetwork/database/features/availability/data-guard-technical-info-152834.html
http://grokbase.com/t/freelists.org/oracle-l/11c18th65t/active-dataguard-ndash-ndash-cascade-standby-or-not
Best Regards
mseberg
Edited by: mseberg on Jul 24, 2012 7:55 PM

Backup of copy while recovery of copy running

Have a question on an RMAN error we are getting and wondering if anyone else has done anything like this and seen this error.
We have had an SR open since 8/30 with no resolution yet though the SR is a standard severity as this problem is not severe and we can work around it. Our opinion is that what we are trying to do should work without error.
Environment Details. I do not suspect this matters as I have reproduced this on Solaris and linux as well as DB versions 11.2.0.3, 10.2.0.4 and 10.2.0.5
Error:
     channel ORA_DISK_1: finished piece 1 at 25-SEP-12
     piece handle=/oracle/RMAN_FULL_SEG2/FULL_SEG2_16_1_794915068 tag=SCOTTSFULL comment=NONE
     channel ORA_DISK_1: backup set complete, elapsed time: 00:01:42
     channel ORA_DISK_1: starting incremental level 0 datafile backup set
     RMAN-00571: ===========================================================
     RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
     RMAN-00571: ===========================================================
     RMAN-03009: failure of backup command on ORA_DISK_1 channel at 09/25/2012 09:46:10
     ORA-19588: datafile copy RECID 2 STAMP 794914328 is no longer validHope this makes sense. It's a bit complex to explain.
Steps to Reproduce some of these can be skipped I was just documenting
everything I did for the SR to reproduce the issue.
*1) Create simple database via DBCA*
Create directories to hold the copy and the full backup.
I used the following directories.
          /oracle/oradata for the database
          /oracle/RMAN for the copy
          /oracle/RMAN_FULL_SID for the backup
          /oracle/IRMAN for incremental that is later applied to DB
*2) Create a copy of the database into /oracle/RMAN directory*
     backup incremental level 0 as copy db_file_name_convert=('/oracle','/oracle/RMAN') reuse
database tag="SCOTTTEST"
     verify copy with 'list copy of database' if you want to
*3) Do backup just to establish a baseline for incremental. (this one not really relevant)*
     backup incremental level 0 tag "SCOTTSFULL" fORMAT
'/oracle/RMAN_FULL_SEG2/FULL_%d_%s_%p_%t' copy of database;
*4) Do incremental backup that will be applied to copy.*
     backup incremental level 1 FORMAT '/oracle/IRMAN/incremental_refresh_%U' for
recover of copy with tag "SCOTTTEST" database;
Here is where issue happens.
Start 2 sessions into rman at this point
one for number 5 and one for number 6.
Start number 5 running and wait for the channel ORA_DISK_1: starting piece message.. then run #6
*5) Start backup of that copy with filesperset 1 to force multiple backupsets.*
The filesperset clause is not set to 1 in our production databases but the backups
are much bigger there and obviously take longer. The use of filesperset is just
to reproduce the issue on a much smaller database.
This has to take longer than #6 and there has to be a channel finishing a set of files and
starting on a new file after #5 is complete.
     backup incremental level 0 filesperset 1 tag "SCOTTSFULL" fORMAT
'/oracle/RMAN_FULL_SEG2/FULL_%d_%s_%p_%t' copy of database;
*6) Start refresh of copy after starting number 5 above.*
     RECOVER COPY OF DATABASE WITH TAG "SCOTTTEST";
# 6 Will run quickly. When #5 finishes a file and moves to the next file it will error.
There are some work arounds that do work and avoid the error.
1) Set filesperset large enough to cover all the files in
the DB (in above example change filesperset to 15 no error will be reported)
2) allocate enough channels to ensure that you cover all the files in the database
3) Don't run the recover of the copy while a full backup is running.
4) Don't run the backup on the copy but backup the original DB.
The situation in our production DB is this.
We want to recover the copy every 3 hours keeping ourselves no longer than 3 hours out of date
with the main database.
every couple of days we do an incremental level 0 of the copy which on our bigger databases
can take more than 3 hours.
These level 0's fail if they run longer than 3 hours.
The answers on the SR so far have been to increase filesperset to a huge number and don't
run them at the same time. The reason they are giving us is that we are not getting a consistent backup
because the files are being recovered while the backup runs.
The problem I have with that reasoning is that if you choose options 1 and 2 above that do stop the error
the recovery is still running while the backup is and the files are still changing so in that case the
files are not consistent either but no error is thrown. Am I thinking about this completely wrong?
We feel that those are not good solutions with what we are trying to do and wonder if anyone
else has tried to do this type of thing with any success?
My suspicion on what is happening is that during the start of the level 0 backup RMAN grabs a list
of files with their id's to backup. The recovery actually marks files deleted and adds a new file with
a new id in the controlfile/catalog metadata (I forget the table at the moment) . Once RMAN finishes a
set of files/file it tries to move on to the rest and cannot find a file with the same id that is
not deleted anymore so throws the not valid error.

We want to recover the copy every 3 hours keeping ourselves no longer than 3 hours out of date
with the main database.Sometimes you need to redesign your strategy. If the above line is your target, you should consider other solutions such as Active/Standby Dataguard replication. Why go through backup and recovery on a remote site, when you can ship the archivelogs to remote destination and have the logs applied, thus keeping both sites up-to-date.
Following is a link for Active/Standby:
http://www.oracle.com/technetwork/database/features/availability/twp-dataguard-11gr2-1-131981.pdf

DataGuard 11gR2

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