Oracle Tips by Burleson

Oracle Dataguard
Chapter 1 - Introduction to Oracle Data Guard

Load Balancing

As a result, the most up-to-date data will not be available for reporting. If the reporting requirements of the organization demand the most up-to-date information from the primary database or real-time data, a logical RAC Grid will be the obvious choice. A logical RAC Grid is always open in read-only or read/write mode and can keep the data in sync with the primary database while providing reporting services.

If the backup and recovery strategy includes a traditional online or offline backup of the database along with Data Guard configuration, the backup operation can be offloaded from the primary database to the standby database.

Automated Management

The managed recovery mode of the standby database in Oracle8i greatly reduced the amount of time a DBA needed to spend on managing this configuration. In managed recovery mode, the archived redo logs are automatically transferred from the primary database to the RAC Grid and applied to the standby database.

The only time a DBA needs to monitor and maintain the RAC Grid is if there are gaps in the archived redo logs on the standby site.  Details about gap sequence and its resolution are provided in Chapter 2, “Data Guard Architecture.”

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