What is the use of Data Guard in Oracle?
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.
What are the different services available in Oracle Data Guard?
Redo Transport Services
Following are the different Services available in Oracle Data Guard of Oracle database: Redo Transport Services….Ans:
- High Availability.
- Data Protection.
- Off loading Backup operation to standby database.
- Automatic Gap detection and Resolution in standby database.
- Automatic Role Transition using Data Guard Broker.
What is the difference between RAC and Data Guard?
What is the difference between Oracle RAC and Data Guard? RAC has one database and several instances associates with it, but data guard has several databases (one primary and others standby databases). RAC is the recommended solution for instance, software and hardware level failures.
What is MRP in Oracle Data Guard?
Managed recovery process (MRP) The managed recovery process (MRP) applies information from the archived redo logs to the standby database. When performing managed recovery operations, log apply services automatically apply archived redo logs to maintain transactional synchronization with the primary database.
What is Oracle 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).
How Create Data Guard in Oracle?
These are the steps to follow:
- Enable forced logging.
- Create a password file.
- Configure a standby redo log.
- Enable archiving.
- Set up the primary database initialization parameters.
- Configure the listener and tnsnames to support the database on both nodes.
How is Active Data Guard license?
Active Data Guard Licensing must meet the following criteria: Both the primary and standby server(s) must be licensed. The licensing of Active Data Guard must match the number of licenses of the associated Oracle Database Enterprise Edition. A minimum of 25 Named User Plus per Processor licensing requirement must be …