Re: Just Curious

  • From: Kellyn Pedersen <kjped1313@xxxxxxxxx>
  • To: david@xxxxxxxxxxxxxxxxxx, regdba@xxxxxxxxx, Oracle-l <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 9 Feb 2011 09:02:46 -0800 (PST)

I'm newer to Exadata and the folks with more time on the system can correct me 
if they have experienced differently, but I'm going to disagree with the last 
statement.  


One of the trends I've noted in my last couple years in the industry are more 
and more "hybrid" databases, aka very, very large OLTP's.  As these companies 
are trying to do more and more transactions on larger and larger sets of data, 
we have new challenges in the DBA frontier.  It's no longer about being an OLAP 
or an OLTPDBA but a hybrid of both.  

Now that I'm working in an Exadataenvironnment, I see the huge benefits to OLAP 
databases-  You want to perform a massive hash join?  Great, be my guest, the 
speeds are amazing when we observe cell smart scans.  You want to run that same 
query off that same join over and over again?  Hey, have a storage index-  
great 
again!  

Now, you want to update numerous different rows on that 1.2 TB table with 
different where clauses?  There's a bigger challenge that I'm not so thrilled 
when I observe on an Exadata system.

As I see Oracle's Exadata being an excellent choice for the huge OLAP 
environments and for the smaller databases  they can utilize standard Oracle or 
other platforms, (and I think we should all note they have MySQL now...)  I 
don't see a benefit to putting a massive number of smaller OLTP's or a larger 
"hybrid" OLTP on an Exadata.  


Then again, I'm newer to Exadata-  anyone, anyone, Bueller?

 
Kellyn Pedersen
Multi-Platform Database Administrator
www.pythian.com
http://www.linkedin.com/in/kellynpedersen
www.dbakevlar.com
 




________________________________
From: David Aldridge <david@xxxxxxxxxxxxxxxxxx>
To: regdba@xxxxxxxxx; Oracle-l <oracle-l@xxxxxxxxxxxxx>
Sent: Wed, February 9, 2011 9:05:47 AM
Subject: Re: Just Curious


One of the selling points of Exadata is that you could host those hundreds of 
apps all on the same box as your data warehouse. Being written exclusively for 
SQL Server of course is a bit of a snag in that plan.





________________________________
From: Peter Barnett <regdba@xxxxxxxxx>
To: Oracle-l <oracle-l@xxxxxxxxxxxxx>
Sent: Wed, 9 February, 2011 15:17:14
Subject: Just  Curious

Curious question.  I have attended two Oracle events recently promoting 
Exadata.  These are high performance, expensive systems.  


At the same time we have purchased applications requiring small to mid-sized 
databases.  All are written for SQL Server only.  


We only have one data warehouse.  We have hundreds of other applications.  Is 
Oracle giving up on the small to mid-size database space?  They sure aren't 
talking about it in their marketing events and I am not seeing apps come in the 
door written to be either database agnostic or written for Oracle.


Pete Barnett
Database Technologies Lead
Regence



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