What is Data Guard observer?
What is Data Guard observer?
The observer is the third party in an otherwise typical primary/standby Data Guard configuration. It is actually a low-footprint OCI client built into the DGMGRL CLI (Data Guard Broker Command Line Interface) and, like any other client, may be run on a different hardware platform than the database servers.
What is observer in Dgmgrl?
The Observer is a component of the DGMGRL interface that is configured on a system outside the systems actually running the Oracle Data Guard configuration, which monitors the availability of the primary database. Corrupted Dictionary Failover is initiated if corruption of a critical database object is found.
How do I start observer in dataguard?
Below are the steps to enable the Observer and Fast Start failover.
- Enable flashback database on both the standby and the primary.
- Ensure that standby redo logs are created on both the primary and the standby.
- Set the logxptmode to SYNC on both primary and standby.
What is Oracle Data Guard broker?
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.
Is Data Guard a licensing?
Data Guard is a feature of the Oracle Database Enterprise Edition itself and does not require separate licensing. On the other hand, Active Data Guard is a so-called Oracle Database Enterprise Edition Option and as such requires separate licensing.
What is Observer server in Oracle?
Observer is an automatic data guard broker, it can be installed with either the Oracle Client Administrator software or the full Oracle Database software. The host should be located In a third, independent location or at least isolated as much as possible from the standby database.
How do I install Oracle observer?
By William Sescu
- Create a wallet directory.
- Adjust the sqlnet. ora on the observer.
- Create the wallet and the credentials.
- Test the connections via wallets.
- Adjust the dgobserver. cfg file.
- Test a Fast Start Failover.
What is the difference between Oracle Data Guard and Active data guard?
The main difference between Oracle Data Guard and Active Data Guard is that Oracle Data Guard is an extension to the Oracle RDBMS and provides data availability and protection while Active Data Guard is an extension of Oracle Data Guard and improves the production database performance for critical transactions.
How does Oracle Data Guard work?
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. Data Guard maintains these standby databases as transactionally consistent copies of the production database.
How do I set up observer?
