If you're looking for Oracle Data Guard Interview Questions for Experienced or Freshers, you are at right place. There are lot of opportunities from many reputed companies in the world. According to research Oracle Data Guard has a market share of about 0.1%. So, You still have opportunity to move ahead in your career in Oracle Development. Mindmajix offers Advanced Oracle Data Guard Interview Questions 2018 that helps you in cracking your interview & acquire dream career as Data Management Specialist.
Q) Why do you think using Data Guard by Oracle is helpful to our work?
The benefits of using the software are many in any environment dealing with data. It ensures that the data stays protected and easily available. You get to take the load off from backups to standby operations database. The problems like gaps in the standby database are automatically detected and resolved. The guard broker allows automated role transition.
The benefits of using the software are many in any environment dealing with data. It ensures that the data stays protected and easily available. You get to take the load off from backups to standby operations database. The problems like gaps in the standby database are automatically detected and resolved. The guard broker allows automated role transition.
Q) Name the three top services offered by the Data Guard software?
The three top services offered by the software are:
The three top services offered by the software are:
1. Redoing the transport service
2. Applying of log service
3. Role transitional services
2. Applying of log service
3. Role transitional services
Q) Name the three protection modes available in the software.
The three protection modes that are available include maximum availability, protection and performance.
The three protection modes that are available include maximum availability, protection and performance.
Q) What is the default protection mode of the software?
The default mode in the software Data Guard is Maximum performance.
The default mode in the software Data Guard is Maximum performance.
Q) What are advantages offered by Maximum Performance protection mode?
The main advantage of this default mode is that the performance of the primary data is not affected while the highest possible level of protection for the data is ensured. The transactions begin to commit as soon as the redone data produced by the transactions get written on to the online log.
The main advantage of this default mode is that the performance of the primary data is not affected while the highest possible level of protection for the data is ensured. The transactions begin to commit as soon as the redone data produced by the transactions get written on to the online log.
Q) What are the benefits of maximum protection mode?
This protection mode comes to the rescue when the primary database fails. The primary database shuts down and stops processing the transaction when this protection mode is enabled. So with this protection mode, you can be assured that there will be no data loss.
This protection mode comes to the rescue when the primary database fails. The primary database shuts down and stops processing the transaction when this protection mode is enabled. So with this protection mode, you can be assured that there will be no data loss.
Q) How is the maximum protection mode enabled?
The redone data must get written in two places before committing the transaction- the online log and a standby database. This way the primary database can shut down but the data remains intact.
The redone data must get written in two places before committing the transaction- the online log and a standby database. This way the primary database can shut down but the data remains intact.
Q) What are the advantages of maximum availability protection mode?
The biggest advantage with one is that the availability of the primary database is uncompromised but the maximum possible level of protection is offered to the data. The transactions with this protection mode only commits when all the redone data needed to recover the transactions get written to a standby database and the online log.
The biggest advantage with one is that the availability of the primary database is uncompromised but the maximum possible level of protection is offered to the data. The transactions with this protection mode only commits when all the redone data needed to recover the transactions get written to a standby database and the online log.
Q) How is the protection mode changed?
The steps for changing the protection mode are as follows:
The steps for changing the protection mode are as follows:
1. Go to the alter database option.
2. Set the standby database.
3. Select from the three available options of performance, availability and protection
2. Set the standby database.
3. Select from the three available options of performance, availability and protection
Q) What is the number of standby databases that can be created?
It depends on what version of the software that is at your disposal. The general number ranges from nine to thirty standby databases.
It depends on what version of the software that is at your disposal. The general number ranges from nine to thirty standby databases.
Q) How would you create a physical Standby in this software?
The following easy steps can create a physical standby in the software:
The following easy steps can create a physical standby in the software:
- Enabling of the forced logging
- Creating of a password file
- Configuration of a standby redone log
- The archiving is enabled
- Setting up of the parameters for initialization of the primary database
- Configure the needful settings that support database of both the nodes.
Q) Mention the chief advantages of using Physical database standby in the software.
There is fourfold advantage to using the physical database standby.
There is fourfold advantage to using the physical database standby.
1. The higher availability quotient
2. The high capability of balancing the load including both reporting as well as backup.
3. Protecting the data
4. Recovery of data is case of disasters
2. The high capability of balancing the load including both reporting as well as backup.
3. Protecting the data
4. Recovery of data is case of disasters
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