Senior Oracle Database Administrator Interview Questions and Answers

Two node RAC with two node DataGuard is a high availability solution for Oracle databases.

• Two node RAC provides high availability by allowing multiple instances to access a single database simultaneously.

• Two node DataGuard provides disaster recovery by maintaining a standby database that can take over in case of a primary database failure.

• Combining the two creates a highly available and disaster-resistant solution for Oracle databases.

• In this setup, each node in the RAC has a...read more

DataGuard is an Oracle feature that provides high availability and disaster recovery solutions for databases.

• DataGuard creates and maintains a standby database that can take over in case of a primary database failure.

• It uses redo apply technology to keep the standby database synchronized with the primary database.

• DataGuard can be configured in different modes such as maximum availability, maximum performance, and maximum protection.

• It can also be used for rolling upgrades and...read more