What is Oracle Data Guard?
Oracle Data Guard ensures high availability, data protection, and disaster recovery for enterprise data. 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.
Do we need license for Oracle Data Guard?
Data Guard is a feature of the Oracle Database Enterprise Edition itself and does not require separate licensing. Active Data Guard includes a number of features and functionalities, such us: Real-Time Query to offload read-only workloads to an up-to-date standby database.
Is Data Guard included with standard edition?
Even though Standard Edition does not include Data Guard, it is still capable of providing standby database functionality. The next section will focus on the different licensing options available and the possible cost savings when using Standard Edition.
How do I know if my database is Data Guard?
HOW TO QUERY DATAGUARD STATUS
- SELECT DATABASE_ROLE, DB_UNIQUE_NAME INSTANCE, OPEN_MODE, PROTECTION_MODE, PROTECTION_LEVEL, SWITCHOVER_STATUS FROM V$DATABASE;
- On the standby database, query the V$ARCHIVED_LOG view to verify the archived redo log files were applied.
What are the advantages of using Oracle Data Guard?
Advantages. Data Guard provides high availability for a database system. It can also reduce the human intervention required to switch between databases at disaster-recovery (“failover”) or upgrade/maintenance (“switchover”) time. Through the use of standby redo log files, Data Guard can minimize data loss.
What is difference between Data Guard and Active Data Guard?
The main difference between Oracle Data Guard and Active Data Guard is that Oracle Data Guard is an extension to the Oracle RDBMS that provides data availability and protection while Active Data Guard is an extension of Oracle Data Guard that improves the production database performance for critical transactions.
How Much Is Active Data Guard?
Active Data Guard carries a list price of $11,500 USD, and both the primary and standby databases must be licensed if they reside on different physical servers. The danger with Active Data Guard is that some of our customers open their standby databases and do not realize that ADG is in use.
Why do we need Oracle RAC?
The main aim of Oracle RAC is to implement a clustered database to provide performance, scalability and resilience & high availability of data at instance level.
What is Oracle RAC and dataguard?
RAC provides for high availability (and scalability) “in a room”. Data Guard however provides for continuity of operations – if the room in which your RAC cluster resides “goes away” (fire, flood, explosion, whatever) data guard is “somewhere else, ready to take over”.
Is Oracle Data Guard included with Enterprise Edition?
Oracle Data Guard provides a comprehensive set of capabilities for data availability and protection that are included with Oracle Database Enterprise Edition.
What is Oracle Active Data Guard?
Oracle Data Guard is an extension to the Oracle RDBMS that helps to establish and maintain secondary standby databases as alternatives to the production primary databases. But, Active Data Guard (Oracle Active Data Guard) is an extended Oracle Data Guard functionality in the Oracle 11g configurations.
How much data store in Oracle Database?
The maximum database size in Oracle Database XE is 5 gigabytes (GB). This includes between 0.5 and 0.9 GB for the data dictionary, internal schemas, and temporary space, which leaves just over 4.0 GB for user data. A database consists of one or more tablespaces.
What is Data Guard?
Data Guard. Data Guard provides the management, monitoring, and automation software to create and maintain one or more synchronized copies of a production database to protect Oracle data from failures, disasters, human error, and data corruptions while providing high availability for mission critical applications.
What is Data Guard replication?
In Oracle Data Guard, a data replication resource is enabled when the protection group is activated in the cluster. Consequently, in Oracle Data Guard, in a cluster in which the protection group is deactivated, the data replication status appears as unknown.
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