It provides new ways to make productive use of a physical standby database while in standby. To steal liberally from larry carpenters book on data guard, data guard is a product of more than 15 years of continuous development. Oracle data guard concepts and administration 10g release 2 10. Oracle 11g data guard switchover and switchback data. Configuration of oracle 10g data guard pavan dbas blog.
The log network server lns is a background process that manages all archived redo log flat file transports to a standby server. Dec 28, 2009 oracle data guard is one of the most effective and comprehensive data availability, data protection and disaster recovery solutions available today for enterprise data. Using recovery manager with oracle data guard in oracle10g. Oracle data guard in oracle database 10g release 2 business continuity for the enterprise an oracle white paper november 2006. Not really, the tables being protected the ones from production that are copied to the logical standby are read only, but the database is open readwrite, you can add indexes, materialized views, other tables of your own design.
It appears that the apply lag metric is not something you can trigger notifications for at least i dont see anything in grid control to let me do that. Oracle data guard 11g handbook larry carpenter, joseph. Quick guide to configuring oracle 11gr2 data guard. The only value that looks to be helpful is the data. Oracle data guard ensures high availability, data protection, and disaster recovery for enterprise data. Unique advantages of oracle active data guard active data guard is an evolution of data guard technology, providing unique performance advantages while leveraging all other enhancements included in oracle data guard 11g. Active data guard is licensed option to the oracle database enterprise edition and enables advanced capabilities that extend the basic data guard functionality. Step configuration of oracle database 10g dataguard. Configuring oracle 10g rac standby for rac primary on.
Data guard, physical standby creation, step by step. New parameters for tuning automatic outage resolution with data guard. Nov 16, 2011 some data guard featuresacross versions 9i, 10g and11g 35. Aug 20, 20 oracle data guard standard edition 11g as you know, oracle enterprise edition is very expensive. Configure primary database create physical standby create logical standby. Top 10 new features for oracle 11g data guard part two by karen reliford after nearly a years hiatus from writing for database journal, im very glad to be back, and to finally be finishing the second part of my article on my favorite new features in oracle 11g data guard, their primary product for protecting databases and an integral part.
This document explains the step by step process of building 10g r2 10. Data guard is the name for oracles standby database solution, used for disaster recovery and high availability. Oracle data guard is the management, monitoring, and automation software infrastructure that creates, maintains, and monitors one or more standby databases to protect enterprise. Heterogeneus data guard configuration primary and standby databases in a data guard configuration can be linux or windows versions realtime query capability of physical standby database active data guard user configurable conditions to initiate faststart failover corrupted controlfile, inaccesible logfile, ora errors added snapshot. Cowritten by a team of oracle experts, oracle data guard 11g handbook provides a sound architectural foundation along with best practices for configuration, monitoring, maintenance, and troubleshooting.
Use this method if your requirement is to minimize downtime during the migration. Realtime query and dml offload uses the standby database for queries, reports and occasional updates without impacting protection of the primary automatic block repair provides an automatic and user. Data guard provides a comprehensive set of services that create, maintain, manage, and monitor one or more standby databases to enable production oracle databases to survive disasters and data corruptions. In this article, i will show you the steps for dataguard configuration in 11gr2 standard edition. Using recovery manager with oracle data guard in oracle database 10g page 5 the standby database is a physical standby database and backups are only taken on the standby database. In the standby db have only the oracle software not the database. Your database is using async transport method and the instance load is at the peak. Cowritten by a team of oracle experts, oracle data guard 11g handbook provides a sound architectural foundation along with best practices for configuration, monitoring, maintenance, and. This paper discusses data guard technology in oracle database 10g, and demonstrates how it is a key factor in the business continuity infrastructure of any. Oracle data guard is the management, monitoring, and automation software infrastructure that creates, maintains, and monitors one or more standby databases to protect. Ive had clients do this, but only in the context of an existing data guard implementation.
I need detailed step by step document with screenshots. Data guard implementation for oracle 10gr2 oracle faq. Data guard configuration with physical standby machine. There are no options present to enable data guard, but when i look under administrationdatabase feature usage there is a feature named data guard.
Click on this link to monitor the performance of the standby database. Oracle data guard disaster recovery for the enterprise page 6 users can perform data manipulation operations on tables in schemas that are not updated from the primary database. We begin with a brief explanation of data guard concepts, and continue with a stepbystep guided tour of data guard 11g configuration and deployment. This article gives an example of the setup and administration of data guard using the data guard broker. Oracle data guard and upgrade discussion geonet, the. Note that using enterprise manager grid control data guard physical standby can be implemented from the grid control console easily. It can be used to determine the cause of failures that occur when sql apply is applying redo. I am trying to figure out how to use data guard with my current install of em 10g. In the server side db database must be and also the database in archivelog mode. Oracle data guard is a crucial part of the insurance policy that guarantees against unrecoverable disasters. Data guard provides a comprehensive set of services that. The software which oracle corporation markets as oracle data guard forms an extension to.
Quick guide to configuring oracle 11gr2 data guard physical standby part ii author. Oraclebase data guard physical standby setup using the. Oracle data guard concept oracle data guard is one of the most effective and comprehensive data availability, data protection and disaster recovery solutions available today for enterprise data. Setting initialization parameters on the primary database. Oracle data guard concepts and administration, 10g release 2.
Oracle grid control notification for data guard failures. Oracle data guard standard edition 11g as you know, oracle enterprise edition is very expensive. It answers the questions you will have, and even those questions you need answers to that you didnt originally think to ask. Oracle 11g data guard switchover and switchback data guard. Data sheet oracle active data guard ascent technology. As all of you must be knowing that dataguard is not available in standard edition. In my previous article we have covered how to configured oracle 11g data guard on centos 6. The data guard broker is a distributed management framework that automates and centralizes the creation, maintenance, and monitoring of data guard configurations. I want to implement oracle 10g dataguard between two local oracle instances. Oracle d ata guard ensures high availability, data protection, and disaster recovery for enterprise data.
The async wait is a normal idle time event when you are using data guard asynchronous redo log transport. Oracle data guard 11g handbook by larry carpenter overdrive. Asm migration using oracle data guard physical standby. Data guard is not an extra cost option, but you do have to pay for a full oracle license at the standby node.
Oracle data guard 11g r2 beginners administration guide is a practical guide that provides all the information you will need to configure and maintain data guard. Oracle data guard concepts and administration 11g release 2 11. Jun 22, 2016 the key difference between data guard and active data guard is the state of the target database. Oracle data guard in oracle database 10g release 2.
Having an active sessions blocks the rns agent from committing the changes into the. Oracle data guard concepts and administration contents. Regular track days fast track days data guard administration release 2. Oracle data guard in oracle database 10g disaster recovery. The only value that looks to be helpful is the data guard status metric, and ive set that to notify me in case of problems. Master oracle data guard 11gprovide superior data protection, availability, and disaster recovery using the tested techniques in this oracle press guide. Oraclebase oracle database 11g release 2 data guard setup. About author hailie jiao works as oracle dba at baltimore, maryland. Oracle data guard concepts and administration, 10 g release 2 10. Lns wait on sendreq tips burleson oracle consulting. Active data guard provides the management, monitoring, and automation software to create. The enviroment 2 linux servers, oracle distribution 2. If one observer fails, there are additional observers that can. We can trace the roots of todays data guard as far back as oracle7 in the early 1990s.
Oct 08, 2014 in my previous article we have covered how to configured oracle 11g data guard on centos 6. He has been working with oracle database since 1997 and is an oracle certified professional for 9i, 10g, and 11g database. Since its a common dba task to provide high availability of databases, data guard is a mustknow topic for every oracle database administrator. Oct 24, 2009 oracle data guard is one of the most effective and comprehensive data availability, data protection and disaster recovery solutions available today for enterprise data. The data guard section of the availability tab includes a performance link. Best suitable for usual data guard jobs setting up, managing, switchover etc. Maximize database availability using oracle data guard and other technologies. Jed walker is the manager of database operations for the comcast media center in centennial colorado. You can not open the database for read only to do backups or analytics. Products purchased from third party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product.
The new features are described under the following main areas. For example, any data guard 11g physical standby database can be easily converted to a snapshot standby. Data guard 11g includes new features to extend its already mature capabilities for data protection and disaster recovery, and includes enhancements to high availability capabilities first introduced in data guard 10g release 2. Some data guard featuresacross versions 9i,10g and11g 35. She is an oracle 10g certified professional and 9i certified associate. Cowritten by a team of oracle experts, oracle data. Oracle data guard technical white paper ron systems. Data guard is the name for oracle s standby database solution, used for disaster recovery and high availability. The best that data guard can do is have the idle server used for read only reporting. To have the dataguard option, we require an enterprise edition.
With data guard, the database can not have any active sessions other than the rns agent. Top 10 new features for oracle 11g data guard part two. These folks are the ones who know how data guard works. This document explains the step by step process of configuring 10g r2 single instance dataguard for single instance primary on redhat enterprise linux 32 bit rhel3 centos 3.
Oracle data guard is one of the most effective and comprehensive data availability, data protection and disaster recovery solutions available today for enterprise data. As to data guard, oracle is slicingoff the functionality as data guard matures. Oracle data guard concepts and administration, 10g release. Multiple observers provide an immediate benefit for high availability. It also covers the steps of converting physical standby database into logical standby database and at the end it shows the process of configuring the dataguard broker. Master oracle data guard 11g provide superior data protection, availability, and disaster recovery using the tested techniques in this oracle press guide. You are correct, the oracle web site says that data guard sql apply and redo apply comes as part of 10g enterprise edition ee. This article contains an updated version of the 9i. Oracle data guard standard edition 11g database world. Oracle database 11g release 2 data guard setup using. Click here for step by step process of configuring rac standby dataguard for rac primary on redhat linux.
As such, use, duplication, disclosure, modification, and adaptation of the programs, including documentation and technical data, shall be subject to the licensing restrictions set forth in the applicable oracle license agreement, and, to the extent applicable, the additional rights set forth in far 52. O10gdga, oracledatabase10gdataguardadministrationo10gdga. Media recovery was used to apply archived redo logs to a remote standby database, but none of the automation that exists today was present in the product. Contains information about the activity of a logical standby database. With oracle 12cr2 it is now possible to configure multiple observers within a single oracle data guard broker configuration. Oracle 10g data guard quick switchover with physical. Oct 04, 20 in this article, i will show you the steps for dataguard configuration in 11gr2 standard edition. Still, this exercise provide a degree of familiarity with data guard. You can use either the oracle enterprise manager graphical user interface gui or command. The book is written for oracle 11g data guard, but clearly illustrates the differences and limitations between data guard for 10g and 11g. Oracle data guard interview questions expert oracle. Installing dg solely for the purpose of upgrade especially between 10g and 11g doesnt seem to the best use of learning curve costs i missed four dinners with my family because the database transition failed during the approved outage window and had to be rolled back. Each new release of oracle has augmented these disaster recovery features, and oracle database 11g expands them dramatically to include the capability to keep a standby database open for readonly queries while still accepting change vectors from the primary database.
Step by step configuration 10g dataguard step by step process of configuring oracle 10gr2 10. Oracle database online documentation 11g release 2 11. Also see my notes on far sync instances with active data guard. Running data guard in rac though its not much different than. Oracle 11g data guard in action uwe hesse principal instructor oracle university germany in this edition of ou experts corner, we examine the 11g version of oracle data guard. As you know, the 10g logical standby allows read only access for reporting and stuff. Configuring oracle 10g rac standby for rac primary on linux. Oracle data guard concepts and administration oracle docs. You can use either the oracle enterprise manager graphical user interface gui or commandline interface cli to automate and simplify. The lns is unable to keep pace and the log buffer is recycled before the redo can be transmitted to the standby, the lns automatically transitions to reading and sending from the online redo logs. Ask tom 11g active dataguard and 10g dataguard implemented.
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