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  • 4k sector size and Grid Infrastructure 11.2 installation gotcha

    Some days are just too good to be true :) I ran into an interesting problem trying to install 11.2.0.3.0 Grid Infrastructure for a two node cluster. The storage was presented via iSCSI which turned out to be a blessing and inspiration for this blog post. So far I haven’t found out yet how to…

  • Grid Infrastructure And Database High Availability Deep Dive Seminars 2013

    So this is a little bit of a plug for myself and Enkitec but I’m running my Grid Infrastructure And Database High Availability Deep Dive Seminars again for Oracle University. This time these events are online, so no need to come to a classroom at all. Here is the short description of the course: Providing a…

  • Limiting the Degree of Parallelism via Resource Manager and a gotcha

    This might be something very obvious for the reader but I had an interesting revelation recently when implementing parallel_degree_limit_p1 in a resource consumer group. My aim was to prevent users mapped to a resource consumer group from executing any query in parallel. The environment is fictional, but let’s assume that it is possible that maintenance operations for…

  • OUGN Spring Seminar 2013

    The annual conference held by the Oracle User Group in Norway has once again been just great. It was the second year I went and I have to admit that it was every bit as good as last year, and that’s holding a very high standard. The combination of such great hosts, great speakers and…

  • Signed on the dotted line-Enkitec!

    I had to think of ‏@OyvindIsene, a great ambassador of the Norwegian Oracle User Group when I typed the heading for this post. Unlike him I have not actively been looking for new challenges but sometimes things just develop, and in my case that was a great turn of events. I am very happy to have signed on…

  • Oracle Linux support in ESXi

    For quite some time now I am using ESXi 5 update 1 for my lab server and I’m very happy with it. In my lab environment I am not too picky what to run and do not worry about support too much. It’s not production! One area of concern has been the support for Oracle’s…

  • Adding disks to VMware Workstation 8 on the fly on RHEL 6

    Although this post is primarily written for users of VMware Workstation 8 it is applicable for any RedHat 6 clone and adding disks with single path on the fly. Multipathing requires additional setup in dm-multipath or the vendor multipathing software which I won’t cover here. A quick hint though: you need to set disk.EnableUUID =…

  • Lights-out management console on Supermicro boards

    So this is slightly off topic, as it doesn’t deal with anything directly related to Oracle, it’s more a reference to those who are using Supermicro boards like I do. The nice thing about professional hardware is that you do not need a keyboard or mouse, or even a monitor. The board I have comes…

  • Why ESXi 5 has become my new standard hypervisor

    OK so I have to admit that I was very sceptical at first about any non-paravirtualised hypervisors. Mainly because my knowledge about virtualisation seems to have become a little dated. I thought that anything that’s para-virtualised will clearly outrun anything else. Based on my experience with my older hardware this was actually true. However, a…

  • Get a feel for enterprise block level replication using drbd

    I didn’t really have a lot of exposure to block-level replication on the storage level before an engagement in the banking industry. I’m an Oracle DBA, and I always thought: why would I want to use anything but Oracle technology for replicating my data from one data centre to another? I need to be in…