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Franck Pachot

A free persistent Google Cloud service with Oracle XE

By | Cloud, Oracle | One Comment

In a previous post I’ve listed several free online services which run an Oracle XE so that you can test your SQL easily. You may want use Oracle XE further, with full access to the database and its host, and still from a web browser. You probably have a Google account. Then you also have a Virtual Machine on the Google Cloud (0.5 vCPU / 1.70 GB RAM boostable to 1 vCPU / 3.75 GB)…

 
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Franck Pachot

ODA Lite: What is this ‘odacli’ repository?

By | Oracle | One Comment

When ODA Lite was introduced, with ODA X6-2 S/M/L, and now with ODA x7-2 S/M, a new ‘odacli’ was there to manage it. It will probably replace the oakcli for ODA HA as well in the future. One big difference: it uses a repository to record the configuration and the operations. I don’t really like it because when something fails you are blocked. Oracle Support can modify the directory, but they ask for an access…

 
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David Hueber

ODA 12.2.1.2.0: Some curious password management rules

By | Database Administration & Monitoring, Hardware & Storage | One Comment

While deploying an ODA based on the DCS stack (odacli), it is mandatory to provide a “master” password at appliance creation. The web GUI provides for that a small tooltip which describes the rules applied on password management. However it looks like there is some flexibility with those rules. Lets try to check this out with some basics tests.  

 
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David Hueber

ODA X7-2S/M 12.2.1.2.0: update-repository fails after re-image

By | Database Administration & Monitoring, Hardware & Storage | 5 Comments

While playing with a brand new ODA X7-2M, I faced a strange behaviour after re-imaging the ODA with the latest version 12.2.1.2.0. Basically after re-imaging and doing the configure-firstnet the next step is to import the GI clone in the repository before creating the appliance. Unfortunately this command fails with an error DCS-10001:Internal error encountered: Fail to start hand shake to localhost:7070. Why not having a look on how to fix it…  

 
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Jérôme Dubar

One command database upgrade on ODA

By | Database Administration & Monitoring | No Comments

The 12.2 finally arrived on ODA and is now available on all generations. Modern ODAs are now supporting 11.2.0.4, 12.1.0.2 and 12.2.0.1 database engines, and these 3 versions can work together without any problem. You probably plan to upgrade some old databases to the latest engine, at least those still running on 11.2. As you may know, 11.2  is no more supported with premier support since January 2015: it’s time to think about an upgrade….

 
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David Hueber

ODA 12.2.1.2.0 – VLAN Management

By | Database Administration & Monitoring | No Comments

Virtual Local Area Network (VLAN) have become since several years a standard in enterprise class networks. Most enterprises are now segregating their network, especially for security reasons, between server and user or prod and test or applications and backup and aso. In the new release of ODA we finally get the support for VLAN on the bare metal platform. This article will briefly demonstrate how these are managed using ODAADMCLI.  

 
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Daniel Westermann

What you can do when your Veritas cluster shows interfaces as down

By | Database Administration & Monitoring | No Comments

Recently we had the situation that the Veritas cluster (InfoScale 7.3) showed interfaces as down on the two RedHat 7.3 nodes. This e.g. can happen when you change hardware. Although all service groups were up and running this is a situation you usually want to avoid as you never know what happens when the cluster is in such a state. When you have something like this: [root@xxxxx-node1 ~]$ lltstat -nvv | head LLT node information:…

 
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Clemens Bleile

CPUs: Cores versus Threads on an Oracle Server

By | Database Administration & Monitoring, Database management | 2 Comments

When doing a performance review I often do talk with the DBA about the CPU utilization of the server. How reliable is the server CPU utilization with tools like top or the host CPU utilization in the AWR-report? E.g. on an Linux Intel x86-64 server with 8 Cores and 16 logical CPUs (Intel Hyperthreading), what does a utilization of 50% mean? As I had an ODA X7-M in a test lab available, I thought I’ll…

 
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