My 2 Cents: Oracle Exadata 1Q2013

Since my blogs tend to be in response to some stimulus they may not reflect a holistic view on any particular product. The “My 2 Cents” series will try to provide a broader view… To help pay the bills please consider this as you read on… Summary OK, I hate Oracle marketing (see here and here).…

Teradata, HANA and NUMA

Teradata is circulating a document to customers that claims that the numbers SAP has published in its 100TB PoC white paper (here) demonstrates that HANA suffers from scaling issues associated with the NUMA-effect. The document is so annoyingly inaccurate that I have to respond. NUMA stands for non-uniform-memory-access. This describes an architecture whereby each core…

SQLFire, Exalytics, TimesTen, and HANA… a quick comparison

As you may have noticed I’m looking at in-memory databases (IMDB) these days… Here are some quick architectural observations on VMWare‘s SQLFire, Oracle’s Exalytics and TimesTen offerings, and SAP HANA. It is worth noting up front that I am looking to see how these products might be used to build a generalized data mart or…

HANA and ABAP

  One more surprise… In the past SAP applications have, in general, avoided using database features. Even a SELECT with a projection was out-of-bounds. They did not want to depend on any database, so they tended to pull all data from the data layer to the application layer and loop through the data using procedural languages like…