How do I know if Data Guard is in protected mode?
Check the Protection Mode in Dataguard Oracle
- Protection Mode. There are three protection modes for the primary database:
- Check the Protection Mode in Database.
- Change the protection mode in Standby Database.
- Following parameter must be set for protection mode:
- Switch the Protection Mode.
- Maximum Availability.
What is Data Guard broker and how it is useful?
Oracle Data Guard Broker is a centralized framework that automates the configuration, management, and monitoring of an Oracle Data Guard configuration. Oracle Data Guard Broker further enhances Oracle RAC by providing apply instance failover for Oracle RAC standby databases.
What is active Data Guard?
Active Data Guard is a comprehensive solution to eliminate single points of failure for mission critical Oracle Databases. It prevents data loss and downtime simply and economically by maintaining a synchronized physical replica (standby) of a production database (primary).
What is Data Guard lag apply?
APPLY LAG – Apply lag is a measure of the degree to which the data in a standby database lags behind the data in the primary database, due to delays in propagating and applying redo to the standby database.
How do I know if my database is primary or standby?
You can use the DGMGRL show configuration and show database database_name commands to confirm the Data Guard Standby database configuration before enabling a standby database. Here is how you enable your primary and standby databases using the DGMGRL command: DGMGRL> enable configuration; Enabled.
What are the Data Guard modes?
There are three types of Protection Modes in Dataguard .
- Maximum Availability.
- Maximum Performance.
- Maximum Protection.
How do I start a Data Guard broker?
Use the parameter dg_broker_start to start and stop the Data Guard broker process. To start the broker, set this parameter to TRUE in the initialization parameter file and restart the database.
What is active data guard in Oracle 11g?
In 11g, Oracle introduced the Active Data Guard feature. This allows the standby database to be open in read-only mode, but still apply redo information. This means a standby can be available for querying, yet still be up to date.
What is Data Guard?
Data Guard is the name for Oracle’s standby database solution, used for disaster recovery and high availability. This article contains an updated version of the 9i physical standby setup method posted here. You should probably be using the Data Guard Broker to configure and manage your standby database, as described here. Related articles.
What is the difference between Oracle sharding and Data Guard?
Oracle Sharding maximizes the ability to horizontally partition and distribute data geographically, providing greatly enhanced scalability and fault isolation. Oracle Data Guard offers data protection and availability across data centers or the cloud.
What is Data Guard physical standby?
Data Guard Physical Standby Setup in Oracle Database 11g Release 2 Data Guard is the name for Oracle’s standby database solution, used for disaster recovery and high availability. This article contains an updated version of the 9i physical standby setup method posted here.