Full text of oracle data guard 11g r 2 administration. Recovery appliance in a data guard deployment v4 oracle. See oracle database high availability best practices4. It is designed to work intimately with the server, providing blocklevel corruption. Create standby at primary dc using compressed backup from dr site. This article gives an example of the setup and administration of data guard using the data guard broker. Oracle database high availability overview oracle docs. In contrast, oracle data guard 11g redefines expectations for data protection solutions. He has been working with oracle database since 1997 and is an oracle certified professional for 9i, 10g, and 11g database.
Active data guard and oracle data guard 11g are related technologies, each having a different area of focus. Using oracle data guard for system and cluster upgrades and migrations. Mar 07, 2014 what are different data guard protection modes. But i do not want to use active data guard, because its extra cost option. This chapter provides an overview of oracle data guard technology. Oracle data guard with oracle database 11g release 2.
Data guard broker describes the oracle data guard broker, a management and monitoring interface that automates many of the tasks involved in configuring and monitoring standby databases in an oracle data guard configuration. This information will help dbas decide if oracle data guard is the appropriate. Since its a common dba task to provide high availability of databases, data guard is a mustknow topic for every oracle database administrator. Oracle data guard provides a comprehensive set of capabilities for data availability and protection that are included with oracle database enterprise edition. Covering all areas of disaster recovery, standby database and automatic oracle failover, this book explains the use of oracle10g data guard solution provides a comprehensive solution for disaster recovery. A promo code is an alphanumeric code that is attached to select promotions or advertisements that you may receive because you are a mcgrawhill professional customer or email alert subscriber. Two large 10g databases, total 20tb, were consolidated and migrated to oracle 11gr2 in exadata within 15 hours. Periodically checking the balance of disk groups and running a manual rebalance, if needed. Oracle data guard is the management, monitoring, and automation software infrastructure that creates, maintains, and monitors one or more standby databases to protect enterprise. Requirements to perform a rolling upgrade using sql apply. Oracle database high availability best practices oracle docs. The oracle active data guard option, an extracost facility, extends oracle data guard functionality in oracle 11g configurations.
In the event of a planned or unplanned outage, an active data guard standby provides high availability by quickly transitioning to the primary role, either manually or automatically, preventing downtime and data loss. As all of you must be knowing that dataguard is not available in standard edition. How to be sure that we do not using any active data guard feature. Because this data protection mode prioritizes data protection over primary database availability, oracle recommends that a minimum of two standby databases be used to protect a primary database that runs in maximum protection mode to prevent a single standby database failure from causing the primary database to shut down. Standby databases can be more than one and can be at remote locations as well. Manual recovery of archived redo log files in an archive gap. 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. Data guard implementation for oracle 10gr2 oracle faq. 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. Primary database is the production database which is used by the users. Oracle high availability, disaster recovery, and cloud servicesexplores all the high availability features of oracle database, how to configure them, and best practices. Rolling forward and merging an existing image copy in the fast recovery area with.
The procedures described in this paper were validated against oracle database 11gr2 11. Posted on may 26, 2010 august 4, 2010 categories data guard, grid control, high availability, oracle database tags data guard, grid control, high availability, primary, standby leave a comment on introduction to the high availability console in oracle enterprise manager 11gr1 grid control. It allows readonly access on the physical standby node at the same time as applying archived transactions from the primary node. Configuration of oracle 10g data guard pavan dbas blog. Performing database upgrades using oracle data guard and sql apply 48. Oracle data guard interview questions expert oracle. A readonly workload in an active data guard standby could change this.
In the diagram below we categorize downtime as either unplanned or planned. Data guard for disaster recovery oracle consulting, oracle. Automatic gap detection and resolution in standby database. This information will help dbas decide if oracle data guard is the appropriate solution, in the realm of disaster protection and high availability, for their enterprise. All i need to setup real time apply in physical standby in 12c but no active dataguard please suggest. Oracle white paperoracle database 11g release 2 high availability 2 oracle s high availability vision when architecting a highly available it infrastructure, it is important to first understand the causes of downtime. High availability and data protection attributes by tier. Learn at your convenient time and pace gain onthejob kind of learning experience through high quality oracle data guard videos built by industry experts. Maximize your availability with grid infrastructure, rac and data guard jesse, scott on. Oracle data guard concepts and administration oracle docs. Data guard is one of the high availability, disaster recovery and data protection architecture from oracle. Quick guide to configuring oracle 11gr2 data guard physical. Oraclebase data guard physical standby setup using the.
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. How to be sure that we do not using any activedataguard feature. Jed walker is the manager of database operations for the comcast media center in centennial colorado. Use data guard transport and network configuration best practices. For high availability purpose, the dataguard provides a standby database which remains available side by side to the primary database. Oracle maximum availability architecture best practices for. Step by step guide to build dataguard in oracle 11g. Pdf role of oracle active data guard in high availability. Consider that you have a cluster system hosting a primary oracle rac database comprised of multiple instances sharing access to that database. The following was posted by dg product manager larry carpenter to the otn forums on 1jun2010. Introduction to oracle data guard oracle consulting, oracle. Oracle 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. Oracle high availability, disaster recovery, and cloud. Oracle data guard training oracle data guard course enrol.
He is the author of oracle automatic storage management and the data guard handbook both from oracle press and has written many papers on storage, database internals, database tuning, and served as a. Oracle data guard supports two role transition operations. It provides the management, monitoring, and automation software to create and maintain one or more synchronized standby databases that protect data from failures, disasters. Oracle 11gr2 data guard physical standby part i author. International technical support organization experiences with oracle 11gr2 on linux on system z november 20 sg24810400. In this article, i will show you the steps for dataguard configuration in 11gr2 standard edition. Oracle data guard ensures high availability, data protection, and disaster recovery for enterprise data. Data guard is the data protection and availability solution for oracle database.
Data guard is a technology built into enterprise edition. Oracle data guard concepts and administration 10g release 1 10. Data guard is controlled with either the dgmgrl command line utility to run, type zdgmgrl. Oct 30, 2018 the best upcoming features in oracle database 19c. It is not a download or an addon and with the excpetion of active data guard fully included, as of this writing, in the basic ee license. Jun 18, 2016 data guard can be used with traditional backup, restoration, and cluster techniques to provide a high level of data protection and data availability. Best practices for data guard and active data guard redo. Oracle data guard 11g handbook by larry carpenter overdrive. Maa development team dedicated to documenting high availability ha best practices for oracle database. Oracle database high availability overview, 11g release 2 11. Oracle database tool that automatically diagnoses data failures, presents repair options, and executes repairs at the users request determines failures based on symptoms e. Before data guard oracle data guard ensures high availability, data protection, and disaster recovery for enterprise data. Following are the different benefits in using oracle data guard feature in your environment. Oracle data guard is one of the most effective and comprehensive data availability, data protection and disaster recovery solutions available today for enterprise data.
After you have read this book you will have mastered database highavailability concepts such as rac, data guard, oem c, and engineered systems oracle exadata x6x7 and. In the oracle open world 2018 event that happened in san francisco last week, from october 22nd to 25th, much has been said about the trends and strategy paths that oracle is taking in both oci and in oracle database. Prior to oracle database 11g, physical standby databases typically operate in continuous redo apply mode i. 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. Maximize availability of oracle databases using data guard to provide failover capabilities. What are the advantages in using oracle data guard. After you have read this book you will have mastered database high availability concepts such as rac, data guard, oem c, and engineered systems oracle exadata x6x7 and. Database configuration high availability and fast recoverability best practices. Primary database changes that require manual intervention at a physical standby. It includes basic information on standby databases. Oracle data guard is oracles main solution for high availability in the event of a disaster. Full text of oracle data guard 11g r 2 administration beginners guide see other formats. Nitin is a wellknown oracle technologist and speaker in the areas of oracle storage, high availability, oracle rac, and private database cloud.
Oracle data guard ensures high availability, data protection, and disaster recovery for enterprise. Oracle 11g physical standby data guard failover steps data. Oracle database high availability features and products. Cowritten by a team of oracle experts, oracle data guard 11g handbook provides a sound architectural foundation along with best practices for. Mar 22, 2011 oracle database 11g release 2 high availability. Oracle data guard provides a comprehensive set of services that create, maintain, manage, and monitor one or more standby databases to enable oracle databases to survive disasters and data corruptions.
Data guard is the name for oracle s standby database solution, used for disaster recovery and high availability. Oracle blogs oracle maximum availability architecture blog. The best upcoming features in oracle database 19c dba. A complete high availability and disaster recovery strategy requires dependable data backup, restore, and recovery procedures.
The intrasite high availability of an oracle rac database complements the intersite protection that is provided by data guard broker. This small book is an indispensable guide for using oracle for a disaster recovery strategy. Data guard protection modes implement rules that controls how the configuration will respond to failures, enabling you to achieve specific objectives for data protection, availability, and performance. But i do not want to use activedataguard, because its extra cost option. Return on investment active data guard puts idle systems to work improving systems utilization. Data guard can be used with traditional backup, restoration, and cluster techniques to provide a high level of data protection and data availability. Oracle database online documentation 11g release 2 11. Data guard fast start failover and switchover configuration pdf graceful failover and failback on manual data guard create manual nonautomatic standby db.
Maximize your availability with grid infrastructure, rac and data guard responding to a promotion. Traditional data guard the most popular use of oracle data guard is to synchronize a physical standby database with its production counterpart for data protection and high availability. Data guard is the name for oracles standby database solution, used for disaster recovery and high availability. Oracle database high availability overview 11g release 2. Oracle data guard ensures high availability, data protection, and disaster. Oracle d ata guard ensures high availability, data protection, and disaster recovery for enterprise data. B1082301 december 2003 this guide describes oracle data guard concepts and helps you implement and manage standby databases to ensure high availability, data protection, and disaster recovery for enterprise data. Instead of merging all threads of redo into a single apply process, multiple apply instances.
Deploying the zero data loss recovery appliance in a data guard configuration table of contents introduction 1 overview 2. Provide superior data protection, availability, and disaster recovery using the tested techniques in this oracle press guide. Learn end to end course content that is similar to instructor led virtualclassroom training. At a high level, automating client failover in a data guard configuration includes relocating. Ideally, data guard provides a combined solution for the problem of high availability and disaster recovery without compromising performance. Oracle high availability, disaster recovery, and cloud servicesexplores all the highavailability features of oracle database, how to configure them, and best practices. This article is a repeat of the manual 11gr2 data guard setup described here, but here the data guard setup and administration is performed using the data guard broker. Oracle database 11g r2, this environment provides a high.
Top oracle database 11g high availability best practices. The active data guard in oracle database 11g has brought significant changes in the. 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. To have the dataguard option, we require an enterprise edition. Merge incremental backups into image copies in the background providing. Quick guide to configuring oracle 11gr2 data guard physical standby part ii author. Oct 04, 20 in this article, i will show you the steps for dataguard configuration in 11gr2 standard edition. Oracle recovery manager rman provides a comprehensive foundation for efficiently backing up and recovering the oracle database.
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