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Oracle Dba Rman Interview Questions And Answers Pdf

oracle dba rman interview questions and answers pdf

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RMAN Interview Questions

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Forgot your password? Privacy Policy. Password recovery. Recover your password. Sunday, March 7, Get help. Validation of the backup. Block level backup. Incremental backup.

Recovery catalog etc. Explain how RMAN performs the backup? When RMAN is initiated, it will start reading datafile headers for used block information. It will get that from bitmap blocks. With that information, RMAN will copy blocks to the backup piece.

What is the reason? The reason would be lost of contact with tape drive, so we need to check with backup team. It means two backups on same database are trying to take controlfile backup and one of the backup is placed in queue until first one completes.

What is your backup strategy? Daily we will take full RMAN backup for all prod databases and will take structural export backup. For dev and other environments, it is a weekly twice procedure. Apart from this, we have archive backup scheduled for all prod databases every 30min. If you have a 2 TB database and need to design a backup policy, how you will do that?

We need to choose RMAN incremental level 1 backup as it will complete faster. Weekend we will take full RMAN level 0 backup. What is your backup retention policy is set to? It will help in avoiding to take backup of a datafile which is not changed when we are performing image copy of database through RMAN. Why RMAN is best over other backup methods? Because it uses block level backup which reduces backup size and time.

What are the new features of oracle 10g RMAN? We have encryption of backup, using archive deletion policy etc. We have some new commands like list failure, validate database etc and also we can now use virtual private recovery catalog. What is the need of recovery catalog? Generally RMAN backup information will be stored in target database controlfile.

In case we lost all controlfiles, it will be a problem in using existing backups. So recovery catalog is another database that to be configured, so that all the target RMAN backup information will now be stored in that. Suppose we lost datafiles in recovery catalog, how to recover them? As recovery catalog is also a database, we will be performing backup for the same.

Sowe can restore and recover from that backup. What is mean by channel allocation in RMAN? It is allocating a medium to send backup to backup device. Generally it is 7 days. How many recovery catalogs you will create for prod databases? Only one is enough. What are the advantages of differential and cumulative incremental backups? Differential will take incremental backup in a daily fashion where as cumulative will take backup so that it includes all the other day changes also.

If you are the DBA, will you choose differential or cumulative and why? I will choose differential because it will complete faster. How RMAN performs incremental backup of database? RMAN will first gets block information from bitmap block. It will start comparing block SCN with the last level 0 backup. What is the difference between full backup and level 0 backup? Level 0 backup will try to compare the block SCN with last backup, it will fail and then performs backup where as full backup no comparison is required.

How can I make incremental backup faster? Using change tracking file in 10g. I have a image copy of database, can we apply level 1 incremental backup on that and recover the database? Yes we can apply. Which process is responsible in writing latest SCN to controlfiles which are re- created?

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RMAN (Recovery Manager) Interview Questions & Answers

This is just the kind of information that i had been looking for, i'm already your rss reader now and i would regularly watch out for the new posts, once again hats off to you! Thanks a million once again, Regards, Synonyms. I also found some good website where you find some good oracle dba resource have look www. There is a very useful information,keep posting. There some tricky and real time scenario based questions may be asked by interviewer to check your understanding critical situations. It really helps to understand how interviewer can confuse you during interview.

RMAN is an Oracle Database client that performs backup and recovery tasks on your databases and automates the administration of your backup strategies. This tool integrates with sessions running on an Oracle database to perform a range of backup and recovery activities, including maintaining an RMAN repository of historical data about backups. There is no additional installation required for this tool. The RMAN environment consists of the utilities and databases that play a role in backing up your data. RMAN gives you access to several backup and recovery techniques and features not available with user-managed backup and recovery. The most noteworthy are the following:.

Part 1 – RMAN Interview Questions (Basic) Q1. What are the main features of RMAN? Q2. Explain the expired backup and obsolete backup? Q3. Explain the Level 0, Level 1 backups in? Q4. Is it possible to take a backup when it is in down status? Q5. Q6. Q7. Q8.


It is an Oracle Database client that is used for the backup and recovery tasks on our databases and it can also automate the administration of our backup strategies. It helps to simplify the DBA jobs in many companies. It is true that every interview is different as per the different job profiles. These questions are divided into two parts are as follows:. Answer: Rman provides us access to various kinds of backup, recovery techniques, and many other features also.

When new incarnation happens, the old backup information in control file will be lost. It will be preserved in recovery catalog. Crosscheck will be useful to check whether the catalog information is intact with OS level information. This command only updates repository records with the status of the backups.

Oracle RMAN interview questions

This is good for both junior level and experienced professional. What is RMAN? Answer RMAN stands for recovery manager.

Please correct the 15 question answer it should be backup set is logical and backup piece is physical. Hi Satya, You're posts are really very help full to me i need a help from you. Regards, Seshu. Hi Seshu, Thank you very much All these interview questions are real time.

Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.

Даже его безукоризненный лотос беспомощен перед эскадрильей вертолетов Агентства национальной безопасности. Сьюзан - это единственное, что не позволит Стратмору меня уничтожить. - Сьюзан, - сказал он, волоча ее к лестнице, - уходи со .

 Диагностика, черт меня дери! - бормотал Чатрукьян, направляясь в свою лабораторию.  - Что же это за цикличная функция, над которой три миллиона процессоров бьются уже шестнадцать часов. Он постоял в нерешительности, раздумывая, не следует ли поставить в известность начальника лаборатории безопасности. Да будь они прокляты, эти криптографы. Ничего не понимают в системах безопасности.

Oracle RMAN Interview Questions

Он не очень-то об этом распространялся. Сьюзан трудно было поверить в такое удачное совпадение.


  1. Creissant P.

    13.04.2021 at 16:40

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