Hardware & Storage

Scripts to duplicate an Oracle database virtual machine: step one

In my last posting of November 9, 2012, Manage templates manually with Oracle Virtual Box, I have presented a solution to duplicate virtual machines using Oracle/ Virtual Box. I did not show the scripts in this first publication, but(…)

Barman: une solution pour vos backups PostgreSQL

L’objet de ce posting est de décrire la mise en place et l’utilisation d’un gestionnaire de sauvegarde pour un cluster de  base postgresql. Barman – acronyme de “backup recovery manager”- pour PostgreSQL est le logiciel sur lequel nous nous(…)

Manage templates manually with Oracle Virtual Box

To create environments for testing, development, or demonstration, several identical virtual machines are required. Use a technology as VMware vSphere or Microsoft Hyper-V, for implementing a dedicated virtualized infrastructure and use templates, would be the best choice. This solution offers(…)

hpacucli: Storage management on HP servers through command line

For sure you already used, or at least heard about, the HP Smartstart Kit. This especially includes the storage management part ACU: Array Configuration Utility. This tool is pretty straightforward to configure the storage and RAID volumes before installing an(…)

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

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(…)

MySQL Data High Availability with semi-synchronous replication

Starting with MySQL 5.5 it is possible to configure semi-synchronous replication. As you probably know, by default, MySQL replication is asynchronous.  Asynchronous replication means that events/transactions applied on one server are not immediately applied on the other one. In the(…)

Block Corruption Oracle 10g vs Oracle 11g

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(…)

Database world – high availability: SQL Server vs Oracle

   Last week, I attended for the first time the Microsoft TechDays. The 2011 Swiss “edition” took place in Bern. For me it is new challenge, because I newer worked deeply with the Microsoft Database Platform “SQL Server”.

SQL Server 2012 ‘Denali’ : AlwaysOn High Availability – Restore is blocked

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(…)

Windows Server 8 Hyper-V 3.0: a real step forward in virtualization

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.