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September 2013

Alleviate load on SANs with Data Virtualization


by Matt Hayward

One of the less obvious advantages of database virtualization is a reduction in the read I/O issued against the underlying physical storage (henceforth called “the SAN”) that ultimately stores the data for virtual databases.

In practice, Delphix prevents around 60% of all non-production database I/O* from ever being issued to the SAN with the Delphix cache.

Challenge: Most stupid exhibition freebie you can find at OOW2013

I’ve been challenged by Doug Burns to find the most stupid exhibition freebie as a present for Andy Cowling. I am of course going to cheat as much as possible to win this challenge, so if you see something particularly stupid, can you let me know so I can snag one. Needless to say, keep it a secret from Doug too. :)

If you are an exhibitor and you happen to have a particularly stupid exhibition freebie, feel free to contact me. Once again, make no attempt to contact Doug Burns… :)



PS. Anything really cool, like a free Exadata, might accidentally get kept for myself…


Distributed Sets

In an earlier post I’ve described how a distributed query can operate at a remote site if it’s a simple select but has to operate at the local site if it’s a CTAS (create as select) or insert as select. There’s (at least) one special case where this turns out to be untrue … provided you write the query in the correct fashion. I discovered this only as a result of doing a few experiments in response to a question on the OTN database forum.

Here’s a little demonstration, cut-n-pasted with a little cosmetic editing from an 11gR1 SQL*Plus session:

Oaktable world presentation

I will be hacking RAC internals with few LINUX tools in Oaktable world presentation series, in SFO. Details are available at Oaktable World 2013

Hope to see you there!

Supercharged performance at a fraction of the price


Virtual Flash Database  Delivers 10x Price/Performance Improvement

Screen Shot 2013-09-05 at 9.52.45 PM

See Press release at 

Subscribing via email / RSS

FYI I have added the “subscribe by email” form to my blog – just scroll downwards once you see the “Subscribe via Email” form in the left side of the screen:



As you see, you can subscribe via RSS too…


See Me at Oracle OpenWorld 2013

I’ll be in San Francisco next week, presenting about Hadoop and Big Data at the biggest conference. If you want to say “hi”,

you can attend one of my sessions:

Happy Birthday to Us !!!

King Training Resources celebrates our 25th year beginning this month. It’s gratifying to see that what began in 1988 is still going strong today. Thanks to all involved, especially to my wife Peggy without whom life would seem impossible.

Hope to see you at Oracle Open World 2013

I’m off to Oracle Open World next week where I’ll be talking about new features in the Oracle 12c Database for developers and Oracle ADF.  You can join me as ODTUG and the ADF EMG team up for a series of great sessions during User Group Sunday.

Here’s my Oracle Open World 2013 Speaking Schedule:

  • Sunday 9/22 – 8:00am-9:00am – Oracle ADF Task Flow Beyond the 10-Minute Demo – UGF700
  • Sunday 9/22 – 11:45am-12:45pm – The Next Generation of Oracle Database and 11gR2 New Features for Developers: What You Need to Know
  • Thursday 9/26 – 12:30pm-1:30pm – Oracle Database 12c New Features for Developers – CON6900