With definitions established, this post examines where HANA, Exadata X3 and flash memory each sit in the in-memory landscape – and what they actually have in common.
Tag: Databases
Databases are the systems of record at the heart of the enterprise. They were designed for correctness, durability, and human-paced interaction – not for continuous, machine-driven access patterns.
As workloads evolve, the database remains the point of truth… but the assumptions around how it is accessed are starting to break.
Thoughts on In Memory Databases (Part 1)
Everyone is talking about in-memory databases, but what does "memory" actually mean in this context? Here's an attempt to cut through the hype and establish some clear definitions.
Using Oracle Preinstall RPM with Red Hat 6
The Oracle Preinstall RPM has a dependency on the Unbreakable Enterprise Kernel that causes problems on Red Hat 6. Here's how to work around it.
This system is not registered with ULN / RHN
One of the most-searched errors on this site – here's why Oracle Linux systems show this registration warning and the straightforward steps to resolve it.
Oracle Achieves Record TPC-C Benchmark
It appears that one or two of my previous posts may have inadvertently annoyed some people at Oracle, so I would like to try and make amends today by posting something extremely positive about the company which, lest we forget, made the "world’s first commercial relational database", backed Linux before it was a commercially viable option and … Continue reading Oracle Achieves Record TPC-C Benchmark
Exadata X3 – Sound The Trumpets
It's crazy time in the world of Oracle, because Oracle OpenWorld 2012 is only a week away. Which means that between now and then the world of Oracle blogging and tweeting will gradually reach fever pitch speculating on the various announcements that will be issued, products that will be launched and outrageous claims that will … Continue reading Exadata X3 – Sound The Trumpets
Database Virtualisation: The End of Oracle RAC?
As databases move into virtual machines, the case for Oracle RAC weakens. Here's the argument – drawing on Mogens Nørgaard's 2003 white paper – that virtualisation may make RAC redundant.
Exadata Roadmap – More Speculation
It's silly season. In the run up to Oracle Open World there are always rumours and whispers about what products will be announced - and this year is no different. I know this because I'm one of the people partaking in the spread of baseless and unfounded speculation. Clearly the thing that most people are … Continue reading Exadata Roadmap – More Speculation
Querying DBA_HIST_SNAPSHOT and DBA_HIST_SYSSTAT
Getting elapsed seconds between Oracle AWR snapshots is harder than it should be. Here's the correct approach to querying DBA_HIST_SNAPSHOT and joining it to DBA_HIST_SYSSTAT.
Exadata Roadmap Preview
Last week, Andrew Mendelsohn gave a talk at the Enkitec Extreme Exadata Expo ("E4") run in Texas by those excellent guys at Enkitec. Andrew is the SVP of Oracle's Database Server Technologies group, so it's fair to say he has his finger on the pulse of the Oracle roadmap for Exadata. Big thanks to Frits Hoogland … Continue reading Exadata Roadmap Preview
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