Keep it running, can you?

Keep it running, can you?

Recently I had a meeting at a customer with a very nice question. It was a kick-off meeting, but the question was … is it possible to have a system that gives us 99,99999 or 99,999999 uptime for our Oracle database. My first reaction was, “But can your stack on top handle these requirements as well?” Apparently they already have this, so now it was time to put this on db-level too. I have to say that the MAA-team does…

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ODC Appreciation Day : The Oracle Community

ODC Appreciation Day : The Oracle Community

This time I don’t want to say thank you to a particular Oracle Feature, but I want to highlight the entire Oracle Community. It started a couple of years ago. After a nice project implementing OVM on Exadata, Philippe Fierens convinced me to start speaking at conferences. Since then, I did not regret any second of that decision. The Oracle Community is such a warm group of people. The cool part is, you don’t have to be shy! Everyone makes mistakes…

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OCI-Tenant admin locked, how to reset your own password

OCI-Tenant admin locked, how to reset your own password

There are some of those days that you rely too heavily on password tools. Yes, you always should use different passwords and strong ones. But I won’t preach to you, but due to this, I locked myself out of my tenant admin user in the Oracle Cloud Infrastructure (OCI). For those who have seen my OCI – talk already, you know I’m a big fan of the OCI – utility. Also a comprehensive list of things you can do with it,…

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lab-time: upgrading grid infrastructure (gi) from 12.1 to 18c – the final version

lab-time: upgrading grid infrastructure (gi) from 12.1 to 18c – the final version

In an earlier blogpost, I was playing around in an unsupported way to upgrade my lab Grid Infrastructure from 12.1 to 18c. The problem there was, that the 18c software was not officially available for on-premises installations. Now it is! During my holidays I had a little time to play around with it and this is how I upgraded my cluster. Reading the documentation it seems very easy (and it really is). Unzip the software and run gridsetup.sh. I wouldn’t…

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Exadata Security: the joy of PXE and UEFI: Secure boot violation

Exadata Security: the joy of PXE and UEFI: Secure boot violation

Today I had the honour to join my colleague Freek D’Hooge (find him here: @dhoogfr )in the datacenter. Task for today, reimage an 1/8th X7 Exadata using PXE. Andy (Colvin) warned me already that when trying to reimage them, they are now using UEFI – boot. Knowing this in advance, this would be an exatastic day. As usual, Andy was right. Trying to boot one of the cells on the pxe “the old method” resulted in: “Secure boot violation: Invalid signature…

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Tunnelblick ovpn client for Mac os High Sierra

Tunnelblick ovpn client for Mac os High Sierra

This weekend I was playing around with Openvpn to a new site. I use Tunnelblick for this, but this time was the first time after I had upgraded my Mac to High Sierra (10.13.5). Suddenly my vpn connections didn’t want to load anymore. Tunnelblick threw these errors to me:

I was running a beta, so first thing was to install the stable release, but the message remained. This link: https://tunnelblick.net/cKextLoadError.html helped me. In high sierra to use or add modules…

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Building bridges: “Bridge must not have discovery mode for LACP interface; Interface file: bondeth0;”

Building bridges: “Bridge must not have discovery mode for LACP interface; Interface file: bondeth0;”

Some days start as an exatastic day and end up grasping your hair. This post is about such a day. A brand new shiny X7 Quarter Rack exadata was being installed for a customer. This setup was a fairly straightforward one. Quarter rack, full ovm and 2 virtual clusters. Not too fancy. LACP is being used for the public network on the fibers and vlan tagging is done on the switch. Given that, my customer created a OEDA configuration using…

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A heads up for my bad memory

A heads up for my bad memory

Gotcha! This post is not about memory settings at all, but a quick heads up. If you are dealing with several generations of exadata’s and you like ironhugging them as much as I do, sometimes things can get confusing. The X7 exadata has changed a bit so when you use them, it’s nice to do things right. Only way to do it right is check it, double check it and verify. One of the things which is always in my…

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OCI-C orchestration error with load balancers

OCI-C orchestration error with load balancers

There are some of those days that you just don’t get it anymore. Last few days were like that for me. One of my current projects is to provide a fully redundant infrastructure in the Oracle Cloud for some critical applications. So I created the Database as a service with dataguard to another region, provisioned a vm (IAAS) for the webserver and tomcat and made some firewall rules. Check also my colleague Freek (you can find him here @dhoogfr ) his journey…

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OEDA has properties too

OEDA has properties too

Some customers ask for help to fill in the Exadata Deployment assistant (OEDA for short). This is the case in my current project. They bought a shiny brand new X7 and requested assistance for the OEDA as they faced an issue with the admin network. It reproduces very easily so I will show this using a demo example. A small introduction is maybe needed for this. Most of us know the 10.x.x.x/8 or the 172.16.x.x and 192.168.1.x/24 ranges that are…

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