Showing posts with label Oracle Exadata Interview Questions and Answers. Show all posts
Showing posts with label Oracle Exadata Interview Questions and Answers. Show all posts

5 Reasons to be Oracle Exadata Certified

The Oracle Exadata Database Administrator and Implementation Certified Professional confirms that applicants have the DMA (Database Machine Administrator) skill to implement and manage the Oracle Exadata Machine. It also indicates a certification holder can do everyday tasks whether it is Database or Exadata Machine which also helps to increase productivity of employee.


There are two exams for Oracle Exadata as below. Based on your role you can choose any of the exam or both.

1. 1Z0-338The Oracle Exadata Database Machine and Cloud Service 2017 Implementation Essentials

2.  1Z0-070 - Oracle Exadata X5 Administration

So why to choose Oracle Exadata Certification?

Now days Oracle is coming with new version of Database with lots of new features which eliminate many of the DBA tasks so if you are traditional DBA then one day DBA role will be eliminated which may impact your career if you are not upgrading yourself with the technology so better to prepare yourself to be DMA which is hot demand in the database market. This certification will help you to transform from DBA to DMA where you can manage database as well the underlying infrastructure where database is running.

Reason 1: Opens the door for better job as it will add weight to your resume without a doubt

Reason 2:  No doubt it will boost your earning if you are certified and transforming from DBA to DMA.

Reason 3: Certified candidate having more chance to get sort listed for any of the interview process.

Reason 4:  Provides you a feeling of accomplishment which will help you to drive your career towards more success

Reason 5: Demand of Oracle Exadata Certified increasing rapidly which enables you to stand out of the group


Ultimate Guide to Clear Oracle Exadata Certification

Oracle Exadata Interview Questions and Answers

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Oracle Exadata Interview Questions and Answers


Get serious about your next job..!!!
                                  It's time to be well prepared..!!

Based on our experience as an interviewer and interviewee, here we have consolidated some of the generic Exadata interview questions and answers.

For more Oracle Exadata Interview Questions & Answers you can go through below link.


Exadata is pre-configured combination of hardware and software which provides a platform to run the Oracle Database. 

  • What is Cell RAM cache?
Cell RAM cache is a cache in front of the Flash Cache on storage servers and is extension of the database cache. It is faster than the Flash Cache, but has smaller capacity.

  • Who will check RAM cache before accessing a lower layer in the IO stack like flash memory or hard disk ?
CELLSRV


  • What is adaptive scrubbing?

Oracle Exadata System Software automatically inspects and repairs hard disks periodically when the hard disks are idle. The default schedule of scrubbing is every two weeks. 

  • In event of storage server failure how RAM cache works?
In the event of storage server failure on the primary mirror, the database sends the RAM cache population to the secondary mirror, so that the blocks are now cached in the RAM cache for the secondary mirror. When the primary mirror comes back to online state, the blocks are populated back in the primary mirror’s RAM cache. 
There are multiple reason to answer this question. You can go to this link for detailed answer

  • Key components of Exadata
DB Server
Cell Storage
Infiniband Switch
Cisco Switch
PDU
Smart Scan
Smart Flash Cache
IORM 
Storage Index
EHCC (Exadata Hybrid Columnar Compression)


  • Exadata Sizing