My colleague Vince Westin published this great post on his blog: During his opening keynote at Oracle OpenWorld 2012, Larry Ellison launched the new Exadata X3. The new version appears to have some nice new capabilities, including caching writes to…
Oracle snapshots and clones with ZFS
Another Frequently Asked Question: Is there any disadvantage for a customer in using Oracle/SUN ZFS appliances to create database/application snapshots in comparison with EMC’s cloning/snapshot offerings? Oracle marketing is pushing materials where they promote the ZFS storage appliance as the…
Exadata Hybrid Columnar Compression (HCC) for (storage) dummies
Although EMC and Oracle have been long-time partners, the Exadata Database Machine is the exception to the rule and competes with EMC products directly. So I find myself more and more in situations where EMC offerings are compared directly with…
Managing REDO log performance
I have written before about managing database performance issues, and the topic is hot and alive as ever. Even with today’s fast processors, huge memory sizes and enormous bandwidth to storage and networks. warning: Rated TG (Technical Guidance required) for…
Performance – The database stack
As mentioned before, I frequently find myself in discussions around Oracle performance and how an Oracle database behaves on EMC storage. It turns out that often there is a lot of confusion on how the different layers interact with each…