Data Guard CARS

Similar Questions

• Oracle will consider the creation of a day 2 hands on the documentation for Data Guard?

  Hello

  Oracle will consider the creation of a documentation of son of hands 2 day for Data Guard?

  There is already an OTN 2 day of CARS and performance tuning documentation.

  Thank you

  Updated - she sent the link to this topic for the Product Manager Data Guard.  As a result, Oracle may or may not consider creating 2 days hands on Data Guard documentation, but no doubt they consider at least considering creation day 2 hands on the Data Guard documentation.

• Data Guard and Flashback

  I will be an active data guard with a primary instance and a secondary instance. I'm in the environment no CARS. My primary databases and Eve will be the flashback database on. I duration of blowback for one day, i.e., I should be able to flashback to the top of any time in the last 24 hours.

  When I do the RMAN backup on primary and remove the archiving log by using the rman command, RMA will not remove newspapers to archive that will be required for the flashback database (24 hours a day)?

  When I am applying newspapers archived on the backup site, I want to remove the archived logs that have been applied, but not required for the flashback database. How can I determine that? In the worst case scenario, I can always keep archived logs from 1 day to wait?

  1. Thank you.

  You need not remove the flashback logs.  Oracle automatically manages the removal of flashback logs.

  Configure retention policy to remove the archive logs more at some point.

  Configure archivelog deletion policy to manage the removal of logs that have been applied to the wait.

  for example:

  CONFIGURE RETENTION POLICY TO RECOVERY OF 7-DAY WINDOW;

  CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON STANDBY;

  In the worst case if you discover you need archivelogs that have been removed from the drive, then you can restore them because they have already been backed up by RMAN.

• Flashback Database using Data Guard environment

  11.2.0.3/RHEL 5.8
  
  I came across several documents that speak of FLASHBACK DATABASE configuration in dataguard environments. We have several
  Physical DBs sleep (Single Instance & RAC) running in our shop. I would like to know two or three major (common) use of FLASHBACK DATABASE data child care settings.
  
  I understand one of the uses mentioned in the below URL ie. a logical error recovery
  
  http://uhesse.com/2010/08/06/using-flashback-in-a-Data-Guard-environment/
  
  I would like to know what are the other major/common use of Flashback Database River in environment DataGuard

  A few other uses:

  (1) flashback allows you to test your DR. So you can activate your watch. Test the connectivity of network/applications and features on your recovery site and when done return the database to a physical standby. It must however ensure that this is allowed in your environment. In some places, I worked, it would be a big no, no, because they have no needs of data loss. However some companies that will allow as long that the watch is delivered in place for some time.

  (2) in the case that you do a failover for a reason, but what has been the main site would then become available, you can flashback what has been your primary to make the eve rather than re-instatiating the database from scratch.
  For example. You have a power failure on your main site if perform you a failover and your watch becomes the principal. Once it's your main site is back online, you can convert your previous primary in a day before making a full return/restoration (or any method you choose) to recreate your standby again. However you also have the option to use flashback on this database and then convert it to a watch because it would be potentially faster than the re-instantiation of the day before.

• Digital switchover and Active Data Guard

  I spin a quarter-Exadata V2 support systems (two instances CARS) and am changing my sleep Physics (an Exadata V1 rack with four RAC instances) in an Active Data Guard configuration (i.e. bearer Real - Time Query). The RDBMS runs 11.2.0.2 with BP7.
  
  My question is if I need to disable RTQ/Active Data Guard before a planned failover? If this is not the case, the transition process will automatically start QTR on the 'new' standby (i.e. my 'old' primary)? We'll test this on next month, but he was curious to know what to expect in advance.
  
  I use DGMGRL (Data Guard Broker) to manage the transition to digital.
  
  Any thoughts?
  
  Mark

  If you use the broker, as you must do with RAC, the broker must manage everything seamlessly. If it's not, and you need to test this, open an SR with Oracle's Support.

• When creating Data Guard?

  We intend to migrate a database RAC and Data Guard.
  
  When you recommend implementation of custody of data? Before the export/import (from the old server to new CARS in custody of data) or after?

  You must first configure your new primary CARS and then configure the standby of the CARS (after the imp on the primary).
  This way you avoid the mass mailing to redo the expectation that comes with the PMI, if this sequence of steps will be faster.

  Disadvantage: If you take the primary CARS into production immediately after importation, there will be a short period of time without protection in this way DR.

  Kind regards
  Uwe Hesse

  "Don't believe it, try it!
  http://uhesse.com

• Active Data Guard and Undo and ora-01555

  Hello
  
  We have a 11.1.0.7 two nodes primary CARS with a physical standby single instance Active Data Guard. When you run an export datapump since the day before, we get an ORA-01555 while the undo_retention is well beyond the duration of watering for export.
  
  I'm looking to better understand the cancellation as part of Active Data Guard. Is there any dependency for cancellation between the primary (s) and the day before? Are the settings Cancel (undo_retention, tablespace... undo size) on the primary and independent intelligence on the other?
  
  Thank you.

  The wait is a physical expectation. An exact copy of the primary. The cancellation to sleep is controlled by it again come from the primary. When the cancellation is replaced in the primary, he gets crushed to the standby regardless of what it executes. You cannot cancel maintained around more on the eve, it is a replica of the primary.

  Increasing the undo tablespace and the primary undo_retention allows more Cancel to keep both primary and standby, but Eve is always controlled by the direction of the primary to cancel it. Of course, you must change the setting to sleep too so that everything is the same when you made the day before to a primary database.

  I hope this helps.

  Larry

• Mixed version Clusterware in Data Guard configuration

  I currently have a primary database RAC with physical relief RAC database with the database to 10.2.0.4 and Clusterware versions. I intend to move the entire stack to 11 GR 2 finally. My window of failure is limited, I plan on upgrading the Clusterware to 11.2.0.1.2 in a breakdown and the database in a second failure.
  
  To mitigate risk, I plan on upgrading the physical relief of Clusterware cluster version before the main cluster. This will give me confidence and timing to repeat on the main cluster.
  
  The resulting configuration will be: -.
  
  Main cluster: -.
  10.2 Clusterware/ASM/listener
  10.2 database
  
  Cluster relief: -.
  Clusterware/ASM/listener 11.2
  10.2 database
  
  Can you see any problems with this please? Other that a process of LNS 10.2 on the principal should communicate with a listener 11.2 (RFS process), I don't see why it wouldn't work.

  In general, it should not any matter having a rescue system with different version of ASM and GI, since this has nothing to do with what needs the Data Guard. Your hope is so correct.

  However, there are some problems with the 10.2 clusterware 11 GR 2 and databases:

  Please check the MOS score: 948456,1 pre 11.2 questions Database 11 GR 2 Infrastructure grid environment

  As you can see in this note, this unfortunately requires patches in 10.2 as well House...

  In addition, take care if your third disc with voting rights is based NFS. It is best to remove it before upgrading clusterware (has had a problem with that).
  Also if you have some VIPs created for your own applications (not the VIP of the oracle, they are o.k. delete them.) I've heard talk about problem trying to upgrade a cluster containing self creates some VIPs.

  Good luck. And if you encounter problems during the update let me know...

  Sebastian

• 11g R2 RAC OneNode vs Active Data Guard

  Hello
  
  I just read on the new Oracle RAC one node but ddont get the difference to the active data guard.
  
  "RAC OneNode offers another possibility: an additional way to fight against the consolidation with one instance of RAC running on a node in a cluster." Oracle calls its strategy a "Maximum Availability Architecture" - when a customer adds redundancy, the database can use it for additional performance. Active Data Guard allows customers to move backup and redundant reports to the machines. "
  
  Source: http://www.b-eye-network.com/blogs/adrian/archives/2009/11/
  
  maximum availability architecture, is not the custodian of data?
  
  concerning
  metalray

  >
  Is it scalability... only. Apart from this. A blog has been linked that says 'Extended RAC'.
  Why should I use RAC for the filesystem of database if they are on a San in any case - assuming the SAN extends to different places? It seems to be that a good SAN makes the idea of 'Extended RAC' a bit useless.
  >

  If you already have a San that "extends to different places", you have protection against disaster with that if you put your data files on it, this is true even for a single instance respectively a one RAC node configuration.

  In both cases, you only have a single instance active - in other words, a single server can be used to service your needs of the user. With a true - in this case 'Extended' CARS, you can have multiple servers at the same time access to your data that is stretched across your San as your needs of the service user.

  In short: If you want to have the only disaster protection, you are served already with your stretched SAN - as long as it extends to a large enough distance.

  An extended RAC is not useless, however, because the cab is more than high availability.

  Kind regards
  Uwe Hesse

  http://uhesse.WordPress.com

• init < SID > .ora during the Data Guard configuration - advice needed

  Hi all
  
  I'm looking to implement data between 2 groups CARS hold. A single cluster will be primary and the other is disaster recovery.
  
  I've already implemented the two 11 g R 2 RAC clusters on RHEL 5 and now need some good docs for Data Guard install tips.
  
  Can someone direct me to the right info step by step for custody of data between clusters RAC - detailed explanations of each of the configuration steps would be helpful too, especially around the file init.ora configuration changes between primary and DR sites
  
  Very appreciated
  
  Steve

  Hi Steve,.

  Watch MAA white papers:

  http://www.Oracle.com/technetwork/database/features/availability/Oracle-database-MAA-best-practices-155386.html

  There are resources very good in establishing CARS DG environments like:

  DataGuard 11 g Installation and Configuration best practices on Oracle RAC
  Deployment of Eve fast Oracle RAC: Oracle Database 11g Release 2
  Installation Guide: creating a day before RAC logical database for a primary database of CARS
  Failover of client in databases highly available Oracle Data Guard Configurations

  a.s.o..

  Sebastian

• Enable and disable Active Data Guard

  We are to build a simple primary (no CARS) to the physical environment pending (no CARS) Data Guard.
  Build us local and then shipment to the customer.
  During our generation we load data and the physical database in Active Data Guard 'mode '.
  To make it easier to check that the data is "protected".
  
  How to get back to "regular" managed recovery Active Data Guard "mode"?
  We were closing the physical Standby and then reopen in managed recovery "ordinary."
  Is it possible to do WITHOUT closing the physical Standby?
  
  Published by: user10159866 on April 22, 2010 12:15

  N ° the only way is at the stop of the physics of the day before and then do a START-UP SUPPORT and restart the application. What version do you use?

  Larry

  PS I guess you have Active Data Guard licensed? :^)

• RAC and Data Guard

  I just want to know if my main site's CAR and I want to set up a physical standby site using Data Guard; the backup site must be in configuration CARS as well, or can it be a stand alone configuration?

  Hey Buddy,

  I just want to know if my main site's CAR and I want to set up a physical standby site using Data Guard; > the backup site must be in configuration CARS as well or can it be a stand alone configuration?

  No, it is not mandatory. You can set up a watch using one instance and the database with the help of a RAC. as well as the opposite.

  For example, I've already migrated a RAC to a single instance, using stand-by. Rather than perform a failover, we performed a switchove, then the database primary was a single instance and the day before by a RAC database.

  It will be useful,
  Cerreia

• The component of Oracle Data Guard is free to use on the production database?

  The component of Oracle Data Guard is free to use on the production database?
  If not, how much is the fee?
  
  What about Oracle coherence?

  http://www.Oracle.com/corporate/pricing/technology-price-list.PDF

  Coherence Standard Edition 100 22.00 4 600 1,012.00
  Coherence Enterprise Edition 230 50.60 2530,00 11 500
  Coherence Grid Edition 500 110.00 5,500.00 25 000
  Coherence Suite 1 000 220,00 11,000.00 50 000
  BPEL Process Manager 1 200 264.00 60 000 13 200.00

  DataGuard active 120 26.40 5 800 1,276.00
  The regular care of the data is free

• Request to license Oracle Data Guard

  Nice day! at all. I don't know if this is already asked before, but I would like to ask for your help regarding my inquiry.
  
  We have an Oracle 10 g Database EE here in our company which is established in a RAC (2 nodes and 1 SAN). Of course, that are already approved.
  
  We intend to implement the Oracle Data Guard.
  
  Of course the Oracle Data Guard will run voluntarily for a disaster recovery, in the case that our CARS (especially the SAN) will crash, we would like to have a stand physically separated by our primary database server (stand by server is completely separate to our existing main server) server.
  
  My questions are:
  
  1. don't we have to take advantage of a new license for custody of data?
  2. what other license should we acquire for the above settings?
  3. we would have a separate Installation of Oracle database on the standby server?
  4. If we have a named user license 150 on the primary database should purchase us a new license user named 150 for the confirmation Server?
  5. are there other things I have to consider in what concerns the granting of licenses for our project?

  OK, here's how my speailist license put, Data Guard as a product is free, but is not the database instance. A physical standby is a database, it must be so licensed, however the expert of the license indicates that licenses you buy for the execution of the physical standby can be ubtained at a substantially reduced rate as they would be called limited licenses. It's not data hold is the cost, it is the cost of an another database on another machine. According to you, current license, you can be covered however, you may not. Everything I say is call a specialist to license Oracle Metalink support, call the guy or gal who has sold you Oracle licenses or appeal and certified Oracle partner/reseller can help you with a specialist of the license and have a licensing discussion/examination before implementation. Oracle support is not those who understand the licenses and how this all works, he did this and like them, always thought that data guard and physical databases Eve were free and included and recently corrected, hard enough I might add.

• Failover monitoring - Data Guard Broker

  Hello
  
  I'm working on a database of Oracle 10.2.0.4 on Solaris 10. This is a database of CARS 2 physical node that is configured in the standby mode.
  
  I want to monitor (send an e-mail) to myself failover (which will be triggered by the Data Guard Broker), so I think I can control failover using alert log (that normally connects the command when initiate us a failover) but I'm not sure if DataGuard Broker also did the same thing (written out the appropriate orders when a failover is triggered)
  
  Is there another way, we happen to know that a failover occurs (we can interrogate v database_role $ dataguard State) but I'm looking for some trigger that will be triggered instantly when a failover is initiated?
  
  It is also possible to monitor the observer, either upward or not?

  Hello
  you have several possibilities to do so. Easier is to use the control grid preset for her events. Or you can put a trigger on the event "after DB_ROLE_CHANGE on the database.

  The observer monitoring can be done with dgmgrl as

  connect sys/@;
  show configuration verbose;
  

  Showing you the presence and location of the observer.

  I'll give an example for the use of the trigger that starts a service according to the role of the database. You can customize to send you an email.

  begin
    dbms_service.create_service('safe','safe');
  end;
  /
  
  create trigger rollenwechsel after DB_ROLE_CHANGE on database
  declare
    vrole varchar(30);
  begin
    select database_role into vrole from v$database;
    if vrole = 'PRIMARY' then
      DBMS_SERVICE.START_SERVICE('safe');
    else
      DBMS_SERVICE.STOP_SERVICE('safe');
    end if;
  end;
  /