Browsed by
Category: installation

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…

Read More Read More

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…

Read More Read More

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…

Read More Read More

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…

Read More Read More

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…

Read More Read More

LAB-time: upgrading Grid Infrastructure (GI) from 12.1 to 18c

LAB-time: upgrading Grid Infrastructure (GI) from 12.1 to 18c

EDIT: This post is meant for playing around and this way is unsupported. The good way of upgrading is described here   First of all I like to start with telling you that this blog-post is intended only for testing, playing, learning,… things. It is not intended for production use and currently 18c is only available for Cloud and engineered systems environments. For on-premises availability check Mike Dietrich’s ( @MikeDietrichDE ) blog here: https://mikedietrichde.com/2018/03/20/when-will-oracle-database-18c-be-available-on-prem/ . There I like his sentence that I…

Read More Read More

OEDA does more than you would expect: januari 2018 update

OEDA does more than you would expect: januari 2018 update

Today I was at one of my Exadata customers for a (PL/)SQL performance tuning assignment. In the meantime there is a parallel project running for a new Exadata. So as you might know, the configuration for an Exadata starts with running the OEDA-tool. The latest version can always be found on My Oracle Support note 888828.1. At the moment of writing this blog, the latest one was January 2018 with patch number 27370068. One of the things which caught our attention,…

Read More Read More

Compute node disk expansion resulted in mount.ocfs2: Bad magic number in superblock while opening device /dev/sda3

Compute node disk expansion resulted in mount.ocfs2: Bad magic number in superblock while opening device /dev/sda3

Before Christmas 2017 I had the honour to expand the compute node storage for a virtualised exadata. Better said, OVM on exadata. This can be done for several reasons. The most logic one, also the reason why this customer bought the disk expansion, is that you want to create more virtual machines and you have ran out of space on /EXAVMIMAGES. The preparation is actually pretty simple. It is documented completely in the Exadata Database Machine Maintenance Guide. And look,…

Read More Read More

This is the end my friend: EOL dates for systems

This is the end my friend: EOL dates for systems

Remember your brand new X2-2 exadata or even a V2, they were (or should have been) blazingly fast when purchased. But all things come to an end, so also the end of life (EOL) for systems strikes your systems sooner or later. From time to time I get the question “how long is my exadata system fully supported”. As always the answer is 42 or “it depends”. But in the case from engineered systems, you can be a little more…

Read More Read More

DbaaS, but on metal: Rac on Oracle Cloud Infrastructure

DbaaS, but on metal: Rac on Oracle Cloud Infrastructure

Let’s skip some networking stuff first and do some fun tests on this Cloud infrastructure. One of the things which caught my attention is the RAC database as a service. I will split this in two separate blog posts. This one will tell you about how to create a RAC database as a service and the next one will tell you about how it performs. Let’s get started! General First step is of course log into your portal and make…

Read More Read More

%d bloggers like this: