My last post (here) blathered about the effect that Hadoop must have on database vendor profits. An associate wrote me with the reminder that Hadoop is also impacting revenues and profits of ETL companies. If you think about Hadoop as both an inexpensive staging area for an EDW and as a parallel compute engine that can…
In January Greenplum rolled out a new query optimizer. This is very cool and very advanced stuff. Query optimization is a search problem… in a perfect world you would search through the space of all possible plans for any query and choose the least expensive plan. But the time required to iterate through all possible…
I would like to point you to two articles in the latest Northern California Oracle Users Group (NoCOUG) Journal here. The first is an interview of Kevin Closson here. The interview is long and will take some time to get through… so set aside 30 minutes… it will be worth it as Kevin discusses Exadata,…
Here is a sound bite on Big Data I composed for another source… Big Data is relative. For some firms Big Data will be measured in petabytes and for other in hundreds of gigabytes. The point is that very detailed data provides the vital statistics that quantify the health of your business. To store and…
In my first blog (here) I discussed the implications of using co-processors to offload CPU. The point was that with multi-core processors it made more sense to add generalized processing hardware that could be applied to all parts of the query process than to add specialized processors that dealt with only part of the problem.…
I’ve been trying to sort through the noise around Exalytics and see if there are any conclusions to be drawn from the architecture. But this post is more about the noise. The vast majority of the articles I’ve read posted by industry analysts suggest that Exalytics is Oracle‘s answer to SAP‘s HANA. See: PCWorld InfoWorld…
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