What is Active Data Guard in Oracle 12c?
What is Active Data Guard in Oracle 12c?
Oracle Active Data Guard delivers real-time data protection and availability while eliminating compromise inherent to other solutions for the Oracle Database. It enables zero data loss disaster recovery (DR) across any distance without impacting database performance.
Is Oracle Data Guard active active?
The main difference between Oracle Data Guard and Active Data Guard is that Oracle Data Guard is an extension to the Oracle RDBMS that provides data availability and protection while Active Data Guard is an extension of Oracle Data Guard that improves the production database performance for critical transactions.
What is Oracle Active Data Guard?
Oracle Active Data Guard is the most comprehensive solution available to eliminate single points of failure for mission critical Oracle Databases. It prevents data loss and downtime in the simplest and most economical manner by maintaining a synchronized physical replica of a production database at a remote location.
How do I enable Active Data Guard in Oracle?
How To Enable Active Data Guard?
- Step1: Check standby database recovery mode.
- Step2: Stop Recovery.
- Step3: Enable Active Data Guard.
- Step4: Check Database Role.
- Step5: Start Recovery.
- Step6: Check Database Role After Recovery.
- Step7: Try to login from third party clients (TOAD, SQL Developer).
What is Data Guard vs Active Data Guard?
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.
How do I know if Active Data Guard is enabled?
If you start a database in SQL*Plus using the STARTUP command and then invoke managed recovery, the Active Data Guard will be enabled. However, if the database is started in SQL*Plus using the STARTUP MOUNT command and then managed recovery is invoked, Active Data Guard will not be enabled.
What is Active Data Guard used for?
Active Data Guard enables read-only access to a physical standby database while Redo Apply is active. Queries and reports can be offloaded from the production system to a synchronized physical standby database – all queries at the standby database return up-to-date results.
How can I check my data Guard status?
Displaying an Oracle Data Guard Runtime Status Overview….How to Check the Overall Runtime Status of Replication
- Log in to a node of a cluster where the protection group is defined.
- Check the runtime status of replication.
- Check the runtime status of data replication for each Oracle Data Guard protection group.
How do you create an Active Data Guard?
Perform the following steps:
- Invoke DGMGRL and connect as SYS. Enter for SYS.
- Invoke SQL*Plus and connect to your standby database as SYSDBA.
- Invoke DGMGRL and connect as SYS.
- Invoke SQL*Plus and connect to your standby database as SYSDBA.
- Invoke SQL*Plus and connect to your primary database as SYSDBA.
What is active standby database?
A standby database is a database replica created from a backup of a primary database. By applying archived redo logs from the primary database to the standby database, you can keep the two databases synchronized. A standby database has the following main purposes: Disaster protection.
How do I know if my database is primary or standby?
You can use the DGMGRL show configuration and show database database_name commands to confirm the Data Guard Standby database configuration before enabling a standby database. Here is how you enable your primary and standby databases using the DGMGRL command: DGMGRL> enable configuration; Enabled.