Overview of Data Guard

Data Guard is basically used for protecting the Database from any disaster that may be from any climatically disaster or any other Disaster like Fire etc. Data Guard is also used as a backup of main database to avoid any data loss due to data corruptions. In Data Guard we maintain the copy of the production database as a standby database. If my production database goes down due to any reason we can switch over to our standby database, we can convert this standby database into primary database and start using this database as production database. The Data Guard is free of cost with Oracle database. Due to Data guard we have a high availability of a database, data protection from any corruption or disaster. The Data Guard is also used for improving the performance of our database by sharing the load between primary database and standby database.