What is Active Data Guard 12c?

Active Data Guard includes new capabilities with Oracle Database 12c to allow writes to global temp tables and access to unique sequences at an active standby. This further expands the number of reporting applications that can be offloaded from a primary database.

How do I check my OEM Data Guard status?

To check the primary database status, select Status under the Primary Database section of the Data Guard Overview page. To check the status of a standby database listed in the Standby Databases table, select the link under the Status column.

What is OEM monitoring tool?

Oracle Enterprise Manager (OEM) is a set of web-based tools aimed at managing software and hardware produced by Oracle Corporation as well as by some non-Oracle entities.

What is Oracle Data Guard?

Oracle Data Guard ensures high availability, data protection, and disaster recovery for enterprise data. 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.

What is the difference between Active Data Guard and 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 many standby databases we can create in 12c?

2 Standby Databases. A standby database is a transactionally consistent copy of the primary database. Using a backup copy of the primary database, you can create up to thirty standby databases and incorporate them into an Oracle Data Guard configuration.

How do I add a standby database to OEM 12c?

  1. SELECT CREATE NEW PHYSICAL STANDBY DATABASE.
  2. PROVIDE STANDBY DATABASE NAME and STANDBY DB HOST and ORACLE_HOME. PROVIDE THE STANDBY DB LISTENER.
  3. Click on VIEW JOB to see the progress. Your standby database is ready 🙂

How can I monitor my database using OEM 12c?

Here’s how to get to SQL Monitoring in OEM 12c. Select the database you would like to monitor. Next select Performance and then select SQL Monitoring from the drop down as shown below. You will be prompted to enter the password of sys or system, which ever you would like to use.

Is Oracle Enterprise Manager 12c free?

The base installation of Enterprise Manager Cloud Control 12c includes several features free of charge with the purchase of any Oracle software license or Support contract. Some features that were part of licensed packs are now included in the base functionality.

How do I know if my database is Data Guard?

HOW TO QUERY DATAGUARD STATUS

  1. SELECT DATABASE_ROLE, DB_UNIQUE_NAME INSTANCE, OPEN_MODE, PROTECTION_MODE, PROTECTION_LEVEL, SWITCHOVER_STATUS FROM V$DATABASE;
  2. On the standby database, query the V$ARCHIVED_LOG view to verify the archived redo log files were applied.

What are the advantages of using Oracle Data Guard?

Advantages. Data Guard provides high availability for a database system. It can also reduce the human intervention required to switch between databases at disaster-recovery (“failover”) or upgrade/maintenance (“switchover”) time. Through the use of standby redo log files, Data Guard can minimize data loss.

What is the difference between Data Guard and standby?

Here are the difference between Dataguard and standby : The dataguard is set up between primary and standby instance . DataGuard can manage both physical and logical standby. DataGuard requires the enterprise edition, while we could write our own standby scripts using the standard edition.

What is Data Guard in Oracle 12c release 1?

Data Guard Physical Standby Setup Using the Data Guard Broker in Oracle Database 12c Release 1. Data Guard is the name for Oracle’s standby database solution, used for disaster recovery and high availability.

What does dorecover do in Oracle Data Guard?

DORECOVER: The DUPLICATE will include the recovery step, bringing the standby up to the current point in time. SPFILE: Allows us to reset values in the spfile when it is copied from the source server. NOFILENAMECHECK: Destination file locations are not checked.

What does Data Guard standby mean in Oracle?

Data Guard is the name for Oracle’s standby database solution, used for disaster recovery and high availability. This article gives an example of the setup and administration of Data Guard using the Data Guard Broker. Related articles. Data Guard Quick Links : 11gR2 , 12cR1 , 12cR2 , 18c , 19c , 21c , All Articles

How are duplicates created in Oracle base data guard?

FROM ACTIVE DATABASE: The DUPLICATE will be created directly from the source datafiles, without an additional backup step. DORECOVER: The DUPLICATE will include the recovery step, bringing the standby up to the current point in time. SPFILE: Allows us to reset values in the spfile when it is copied from the source server.