World's Fastest Database Machine....

Recently Oracle announced World's fastest database machine Oracle Exadata Machine X8M.

Mainly two technologies has been adopted by this new machine.

  • Persistent Memory, adding a new shared storage acceleration tier
  • RDMA over Converged Ethernet (RoCE) network fabric, enabling 100 Gb/sec RDMA

OLTP, Analytics and Mixed workload can get significant benefits from Oracle Exadata X8M machine.

For more information on Oracle Exadata X8M, see datasheet of Exadata X8M.


You would also like our question bank for 1Z0-070 and 1Z0-338 exadata certification.

Exadata Quick Reference 5: Top Exadata Wait Events

Here listed down top and most critical Exadata wait events for the quick reference.


cell list of blocks physical read 
cell manager cancel work request
cell manager closing cell    
cell manager discovering disks   
cell manager opening cell    
cell multiblock physical read   
cell single block physical read  
cell smart file creation   
cell smart flash unkeep    
cell smart incremental backup   
cell smart index scan    
cell smart restore from backup   
cell smart table scan    
cell statistics gather     
cell worker idle     
cell worker online completion   
cell worker retry  

Newly Released: Oracle Exadata X8-2

This post is bit late but important if still you are not updated.

Recently Oracle announced Latest Oracle Exadata X8 which is specially design to expand more capacity in terms of storage by increasing the size of storage disk.


There no huge changes compare to Exadata X7. The major change is the size of disk from 10TB to 14TB which will ultimately help to reduce cost as Oracle Exadata storage includes license cost for storage disk also.

There are not change in number of CPU but clockspeed of CPU has been increased in newer version. There is no change in size of memory.

Third type of storage has been introduced, Storage Server XT. This is a storage node without flash cards and with less memory and only a single CPU. This type of node is intended for long term data storage for archiving purposes. It will cost considerably less than the regular storage nodes.

Check out this data sheet for the full specification overview: 

New Launch Cloud Edition : Oracle Exadata Interview Questions and Answers

A big THANK YOU to all of you for your overwhelming response for our first edition of eBook Oracle Exadata Interview Questions & Answers,We were delighted to sold off 5730+ copies till date. We have never thought to reach this mark when we have released this eBook. We have received lot of positive feedback on this book how it helps to crack the interview.

As a part of update now we are introducing ORACLE EXADATA CLOUD SERVICE interview questions and answers in our second edition of eBook. Total questions now more than 500+ with detailed answers.


It was very worthwhile book for us to launch as many people put their effort to make it possible. We are sure that happiness will be brought to all the readers as a result of our efforts. If you haven't yet read this book, we thank you for exploring our website.

"Stay miles ahead of the competition"

We appreciate the wealth of comments/appreciations we received telling us of your expert review of book and interview experience. Your feedback means the world to us. 

With profound gratitude, and with hope for your continued reading pleasure.

Exadata Certification Team

Exadata Quick Reference 4: Top 33 Oracle Exadata Parameters

Here listed down Top 33 Oracle Exadata Parameters, Exadata performance more over dependent on these parameters. It includes traditional database parameters also but those parameters also applied for Exadata environment and playing important role in terms of configuration and performance.

cell_offload_decryption
cell_offload_plan_display
cell_offload_processing 
_cell_index_scan_enabled
_small_table_threshold 
_serial_direct_read 
_serial_direct_read 
_kcfis_storageidx_disabled 
_kcfis_storageidx_diag_mode 
_cell_storidx_mode 
_cell_storidx_minmax_enabled