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David Hueber

ODA – VMs possibilities & performances

By | Hardware & Storage | No Comments

As you know it is possible to install the ODA in a virtualized mode and to take avantages from all cores not licensed with Enterprise Edition for additional VMs. The question is what could we do with it and which performances could we expect… The answer to the first question is indeed pretty simple….almost everything. If you have and ODA X5-2 with the version 12.1.2.3.0 implemented in virtualized mode then you are running an OVM…

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Oracle Team

Oracle Database 12c: ACFS – un système de fichier pour vos bases

By | Technology Survey | One Comment

La version 12c d’Oracle Grid Infrastructure introduit de nombreuses nouveautĂ©s dans le support d’ACFS, le système de fichiers clusterisĂ©s d’Oracle. Nous abordons dans ce posting la capacitĂ© d’ACFS d’ĂŞtre le système de fichier de votre base de donnĂ©es ainsi que sa capacitĂ© de mise en Ĺ“uvre des snapshots. Rappel sur ACFS Ce système de fichier est apparu avec la version 11.2 du cluster Oracle. Il s’appuie sur ASM ainsi qu’ADVM pour ASM Dynamic Volume Manager. Il est…

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Oracle Team

Oracle Database 12c: Grid Infrastructure, quoi de neuf?

By | Operation systems | One Comment

A la lecture du New Features Guide, on trouve dans le chapitre sur Grid Infrastructure beaucoup de nouvelles fonctionnalitĂ©s pour Grid Infrastructure, ASM et ACFS, mais l’Ă©vĂ©nement est l’annonce d’une grosse Ă©volution dans l’architecture du cluster. Flex Cluster En effet, cette version 12c introduit une nouvelle architecture nommĂ©e Flex Cluster dont voici un aperçu: Schema Oracle documentation Les objectifs annoncĂ©s sont “Ă©volutivitĂ©, flexibilitĂ© et facilitĂ© de gestion”. Ainsi, nous pourrons choisir l’organisation “topologie” de notre…

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Oracle Team

Oracle Database 12c: GĂ©rer le Password File avec ASM

By | Database management | No Comments

En dehors de l’annonce de Flex ASM, ASM Ă©volue peu dans Oracle 12c. La plus intĂ©ressante des amĂ©liorations pour les administrateurs de bases de donnĂ©es en cluster est l’introduction de la gestion des “Password Files” dans ASM. C’est l’objet de ce posting. Rappel Tout d’abord, un retour sur l’utilitĂ© du Password File et des Ă©lĂ©ments de configuration: Orapwd est l’outil pour crĂ©er un fichier de mots de passe pour authentifier les utilisateurs Oracle Ă  qui l’on…

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Oracle Team

Oracle Database Appliance (ODA) – an overview

By | Operation systems | No Comments

Last february, I had the chance to attend an Oracle presentation about ODA: Oracle Database Appliance. I found it interessant to share what I have learned about this technology. Which, I confess, convinced me. Summary Before developing the software and hardware components, here is a small overview of ODA. ODA is an all in one solution providing Hardware, Operating System, and database components. It comes in a 4U rack server form, composed of two distinct…

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Yann Neuhaus

Replace a voting disk is so easy with Grid Infrastructure 11.2 & ASM!

By | Hardware & Storage | No Comments

For a few day we had a quick request at a customer which was to replace a voting disk in an ASM disk group. The current ASM disk group (redundancy normal) had 3 disks : two located in one data center and one disk in another data center. The goal was to replace one voting disk (from the most used Data Center) with one disk coming from a third Data Center.

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David Hueber

OpenWorld 2011 is over … Having a last glance on ASM & disk failures

By | Technology Survey | No Comments

So we are now arrived at the end of the largest Oracle OpenWorld ever. Around 45’000 people had joined San Francisco to exchange around IT and especially Oracle technologies.
It has been a great conference with much of interesting sessions and as each year several announcements: Enterprise Manager 12c, Exalytics and Oracle Public Cloud.

For my last post about OOW11, I want to talk about the last session I attended. Who said that the late sessions are usually having less interest? I personally was lucky enough to attend a great presentation held by Oak Table member, Alex Gorbachev. Alex used ASM to demonstrate how hardware and software fault tolerance mechanisms, especially mirroring, are affected by different parameters such MTBF.

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