The Linux, Unix and Windows layer that every database and application depends on. Our consultants share what they set up and fix in the field: storage and filesystems, networking, virtualization, SUSE, and hardware such as the Oracle Database Appliance.
Ayant rencontré récemment des problèmes de blocs corrompus sur des bases Oracle en version Oracle 10g et Oracle 11g, des différences notables sont apparues notamment au niveau de la vue v$database_block_corruption. Je vous livre dans ce post le résultat de mes tests.
During our test to create a failover clustering with the new function ‘AlwaysOn High Availability’, we had a few difficulties to overcome like the restoring of databases of the secondary cluster node.
In this article, we will just explain you how to avoid it before you encounter the problem.
As we are on Microsoft Connection Days 2011 in Lausanne yesterday, we have a presentation of Windows Server 8 and specifically of Hyper-V 3.0.
I take this opportunity to introduce some news about this.
Aprés le post sur « Utilisons les securefile », revenons sur le sujet LOB avec une approche performance, stockage.
Nous rencontrons parfois des modèles de données étranges, nous aurions envies en tant que DBA de tout reprendre à zéro pour refaire un modele relationnel en 3em forme normal (3NF), plus efficace et mieux conçu dans notre « RDBMS » favori, mais la réalité étant
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Last week, I was not able to complete a backup because of the ORA-19566 error: “exceeded limit of 0 corrupt blocks”. Here is what you can do to fix it. Starting Point: backup error Here is the starting point of this case. The following error is found in the RMAN Backup log file: allocated channel: ch1 channel ch1: sid=25 devtype=DISK…
With the first video from Windows 8 the 02/06/2011 on YouTube, dbi services must talk about it to present you some information about Windows 8.
Wenn Sie einen Oracle Datenbank Server auf VMware ESX betreiben, sollten Sie die VMware Tools nicht unterschätzen. Sie sind nicht nur sinnvoll bei Copy-Paste-Aktionen oder für bessere Grafiken, sondern liefern ebenfalls High-Performance-Network, Storage Adapter (PVSCI), Treiber, etc. Auf Linux Guests müssen die Tools mit dem Kernel zusammen kompiliert werden. Besonders auf Oracle Enterprise Linux 5 Upgrade 6 gibt es ein…
Nowadays MySQL Databases are encapsulated into many mission critical software solutions. Lots of companies host one or many MySQL databases in their data center, sometimes even without knowing it except when the MySQL service is no more available. In order to increase this service availability it is mandatory to have a monitoring solution. Regardles of you are using MySQL Server,
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I was upgrading Netbackup yesterday to version 7.0.1 and faced a quite “funny” issue with the OpsCenter. The installation failed on pre-requirements checks saying that no space was available. Nothing strange at this point…except that we still had about 79GB free space! 
Running Linux servers configured with Huge Pages was not always adapted when both 10.2 and 11.2 databases had to be started in parallel. Since 11.2.0.2 this situation changed !
Le stockage des LOB est souvent négligé lors de la création des tables. Hors les choix de stockage ont un impact sur la performance d’accès aux données. nous allons voir rapidement dans cet article l’avantage à utiliser le stockage SecureFiles proposé par Oracle à partir de la version 11gR1.
What is finally the primary objective of a database? Storing Data 
The question is, how Oracle makes it. For many beginners a confusing topic is
to get the picture between physical storage and logical one. So how does it works?
