Data Guard Broker Architecture

Before understanding, Architecture let us first understand the components of Data Guard Broker. To know more about it Oracle Dataguard Data Guard Components : Oracle Data Guard Broker consists of Client side and Server side components. Client Side Components Oracle Enterprise Manager DGMGRL [command line interface] 2. Server Side Components DMON Process Configuration Files DMON Process […]

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Manual Failover in Data Guard

We understood roles of the database in the previous article and explored SwitchOver of database roles. Manual SwitchOver in Oracle   In this article, we will see FailOver of the Database role. When we have planned maintenance activity we can simply switch roles of Primary and Standby database. But what if Primary Database crashes and […]

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Manual SwitchOver in Oracle

Let us understand today whole switchover the scenario in Oracle Data Guard. I have written many articles of Oracle Data Guard that explains the architecture of Oracle Data Guard, Benefits of having Data Guard as your DR solution, different methods of creating Data Guard. Today, we will see How your database works before switchover after […]

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Changing Protection Modes in Oracle

We have seen Protection Modes in depth in my previous Article. To read protection modes in data guard : Protection modes in Oracle Dataguard In this article, we will see changing protection modes . First, we need to decide what protection mode we want in our environment. Which protection mode suits better.What is important for […]

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Setting Protection Modes in Dataguard

In this article, we will see parameters that we can set while setting different protection modes and its impact on primary database and standby database. Protection modes in Oracle Dataguard We have already seen Protection Modes in Data Guard Protection modes in Oracle Dataguard Now let us see Redo Transport Attributes required for setting different protection […]

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Logical Standby Database Creation

In the previous article, we have seen Preparation and consideration we need to see before creating Logical Standby Database. Preparing to Create a Logical Standby Database We can use following steps to create Logical Standby Database. Prerequisites : Physical Standby database already created. Step 1: Check Physical Standby Database is created and is synchronized with […]

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Enabling Block Change Tracking on a Physical Standby Database

As with 11g Oracle comes with a new feature for Oracle Data Guard: Active Data guard. And with Active Data Guard enabled we can use Block Change Tracking feature for the physical standby database. Now, what is Block Change Tracking? Block Change Tracking: RMAN change tracking feature for incremental backups improves incremental backup performance by recording […]

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Role Transition Switchover and Failover

In Data Guard environment your database operates in one of two Role. 1.Primary Database 2.Standby Database. To know more about it Oracle Dataguard You can have Physical, Logical or Snapshot database in Standby role. Primary and Standby roles are mutually exclusive. With Data Guard role management service we can change this role dynamically and can achieve […]

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Preparing to Create a Logical Standby Database

Prior to that, we need to create the Physical Standby. Logical Standby Database : SQL Apply Architecture We need to perform following steps before creating Logical Standby Database : 1. Primary Database must be in Archive log mode. Check your database is in archive log mode or not. If not enable it for archive log. […]

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