Oracle

Exadata TPC Benchmarks

I’m not aware of any TPC results for Exadata V2. However a TPC-C test was run in late 2009 using a Sun F5100 flash array on Sun T5540 servers, setting a record for the benchmark that still stands. The Oracle wiki has a great overview of the various benchmarks and what they actually measure.

Exadata BP5 Patching Issues

We’re in the process of applying Exadata Bundle Patch 5, and ran into an issue I wanted to share.The system didn’t have a XDB user, and likely because of this, the two “alter package” commands invalidated the dbms_metadata objects. The subsequent recompilations all failed. On advice from Oracle support, we ended up backing out the patch and re-applying without running these “alter package” commands, and confirmed that DBMS_METADATA works fine. So if you don’t have XDB installed, skip the “alter package” commands. I hope the README is updated soon.

Making the Most of Exadata

My article Making the Most of Oracle Exadata in the August 2010 issue of the NoCOUG Journal has come out. It covers Exadata’s feature set, and then dives deeper, discussing how to make the best use of its capabilities. For those of you not subscribers of the print edition, it’s also available electronically.

Pythian Speaking @ Oracle OpenWorld 2010

If you’re attending Oracle OpenWorld 2010 in San Francisco, Sept. 19-23, 2010, be sure to stop by one of Pythian’s many sessions. We’ll be all over the show, with experts Alex, and Marc speaking as listed below. Or, you might find Paul, Alex and others attending the bloggers meetup, participating in Oracle ACE/ACE Director activities, or at some of the User Group or OPN sessions on Sunday. Drop us a line on twitter @pythian while you’re at the show to connect with Pythian.

Data Warehousing Best Practices: Comparing Oracle to MySQL pt 2

This part will go over the 2nd “P”, partitioning. Learning about Oracle’s partitioning has gotten me more interested in how MySQL’s partitioning works, and I do hope that MySQL partitioning will develop to the level that Oracle partitioning does, because Oracle’s partitioning looks very nice (then again, that’s why it costs so much I guess).

Data Warehousing Best Practices: Comparing Oracle to MySQL pt 1

At Kscope this year, I attended a half day in-depth session entitled Data Warehousing Performance Best Practices, given by Maria Colgan of Oracle. These are my notes from the session, which include comparisons of how Oracle works (which Maria gave) and how MySQL works (which I researched to figure out the difference, which is why this blog post took a month after the conference to write).

Determining I/O Throughput for a System

At Kscope this year, I attended a half day in-depth session entitled Data Warehousing Performance Best Practices, given by Maria Colgan of Oracle. In that session, there was a section on how to determine I/O throughput for a system, because in data warehousing I/O per second (iops) is less important than I/O throughput (how much actual data goes through, not just how many reads/writes).

Implementing Exadata Webinar

I’ll be giving a webinar about Exadata implementation, where I’ll be talking about Exadata features and how best to use them. I’ll also be sharing some lessons learned from my own implementation experience. The webinar will be on Wednesday August 11 at high noon eastern time. Note that this is a change from the previous date.

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