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  • 12.2 New Feature: the FLEX ASM disk group part 2

    In the first part of this series I explained the basics and some potential motivation behind the use of ASM Flex disk groups. In this part I would like to complete the description of new concepts. New Concepts related to FLEX ASM Disk Groups With the Flex disk group mounted, the next steps are to…

  • 12.2 New Feature: the FLEX ASM disk group part 1

    I knew about the 12.2 FLEX ASM disk group type from other presenters but until now – when researching the feature for the upcoming DOAG HA Day – I haven’t been able to appreciate how cool this is. And I really think it is pretty cool and worth sharing! There is a lot to be…

  • Taming XML data in the v$cell% family of Exadata views

    While researching Exadata 12.2 features that have been introduced with Oracle 12.2.1.1.0 I ran into an old problem of mine, querying the v$cell% views that are new with Exadata 12.1.1.1.0 and Oracle RDBSM 12c Release 1 in a meaningful way. In case you haven’t seen them yet, these views expose cell metrics and other information…

  • 12.2 new features: a first encounter with the new Cluster Health Advisor

    One of the many new manuals that showed up in Oracle Database 12.2 is the Oracle Autonomous Health Framework User’s Guide. This book contains a lot of information, some of which we already know from previous releases, and some new stuff as well. One of the new chapters caught my eye in particular: “Proactively Detecting…

  • DOAG Exaday 2017: a preview

    I am quite excited to have been accepted to speak at the upcoming DOAG Exaday taking place June 20 in Frankfurt. It is the third time I have been lucky enough to present at the event, having spoken both in Frankfurt in Hamburg in previous years. As you can probably imagine by looking at this weblog, I am…

  • A quick look at Oracle 12.2 performance instrumentation

    Thanks to the prep-work done by Andy Colvin, who continuously and boldly goes where no man has gone before, one of our Exadata systems in the lab is now fully upgraded to 12.2.0.1. It comes fully equipped with the matching cellos to support all the cool new features. Exciting times! The reason for this post…

  • Using virt-install/KVM and kickstart to create lots of identical VMs quickly

    In preparation for an upcoming talk about Oracle 12.2 I am planning on getting my feet wet with the Oracle 12.2 Sharding option. It seems to be a very interesting subject to get into, but like all new subjects, they can be intimidating at first due to their complexity. So why not use the instructions…

  • Little things worth knowing: Executing RDA on RAC

    Result! I have finally been able to gather a complete RDA (Oracle Remote Diagnostic Agent) output on my 2 node RAC system. After consulting the relevant documentation on MOS-which is spread over at least 42 Doc IDs-I found them not to be very helpful to the degree that some of what I read is actually wrong or contradicting. I…

  • New Events for Data Guard and Synchronous Redo Transport in 12c (2)

    After the baseline has been established in the first part of this series it’s time to measure the effect of the network in this part. The second test will introduce an interesting feature: Using Linux’s own Traffic Shaper/Quality of Services module I will add a delay of 100ms to the Data Guard network interface card…

  • New theme – it was about time

    After a lot of searching and testing I have finally decided to put the ageing Andreas09 theme a rest and try a new one. It has been nagging me for years that the representation of the blog is more like the early 2000s than 201x. Or was it late 1990s? Anyway, out with the old, in with…