Last Tuesday I had the privilege to present at Oracle Openworld 2013 together with Sam Marraccini (the guy with the big smile here in the pic) from EMC’s Flash products division. Sam introduced the various EMC Flash offerings we have,…
ZFS and Database fragmentation
Yet another customer was asking me for advice on implementing the ZFS file system on EMC storage systems. Recently I did some hands-on testing with ZFS as Oracle database file store so that I could get an opinion on the…
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…
Application processing at lightning performance – The hourglass view of access times
Even in these modern times, when lots of things are changing in the ICT world, some lessons from the past still hold true. Previously, I discussed the I/O stack in a typical database environment. As virtualization has complicated things a…