ORACLE DBA INTERVIEW QUESTIONS (L2)

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##############ORACLE DBA INTERVIEW QUESTIONS (L2)#####################


How Will you create RAC DB from Standalone DB.

How you create DR DB from scratch.

How will you proceed to migrate your database from FS to ASM.

What is Voting Disk, why its required?

what is the minimum and maximum number of voting disk that you can have for voting disk.

What processes are required in RAC?

What does LNS,RFS process do?

What is load balancing and its type?

How will you perform refresh on RAC Database.

What is  raw disk and ASM .

How do you approach to stop and start services in RAC env.

Why do we need public, private and Virtual IP's?

What is ACFS?

How do you perform switchover and failover?

How to make DB in sync with standby database if its not in sync. what could be the causes?

In case of performance issue, how you approach to resolve it.

How will you record the information of your current session?

How can you use the information collected in trace file from your session?

Why you do Index rebuilding? Which wait event indicates towards it?

How can you find out if your table can be redefined?

What does DBMS_SQL package do?

If you to take export in different FS how would you approach for it?

What is the difference between exp and expdp?

What is use of table_exist_action in impdp and what are the option you can use for it?

How you create Standby database? By duplicate or rman backup?

How do you do recovery of the database?

What type of issues you have faced in RMAN?

How you schedule backup from OEM ?

How backup runs in your env and why you think its planned in optimal way?

To check the execution plan of a SQL which package you use?



What is Marginality w.r.t. database statistics?

What is max extent term in oracle database used for?

What is DB time and DB CPU time? Which will have greater value and why?

How you determine DB CPU time is good in AWR report?

How you approach to identify the root cause of any performance related issue via AWR, basically what approach you use to read it.

In order to tune oracle database running on a Linux machine what parameters you can set or change at OS level.

What is huge pages and why it is used for?

What type of wait events have you seen and how you approach to resolve the issue related to that wait event?

How exp and expdp are different ? why expdp is faster than exp?

What is the term transform is used in data pump?

You are facing that your active data guard is responding slow for reporting related task. How you can find the root cause?

can you generate AWR snapshots on Active data guard?

What is log miner?

What is shmmin and other oracle related kernel parameters are used for?

How you identify that a table is fragmented or not?

Tell me about the indexes related to the partitioned tables.



Thanks & Regards

Nikhil Kumar.

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