dbi services Blog

In this bog posting, I will present a boot sequence that works for all Linux-based operating systems - from switching on the power to the login screen.

As everybody knows, Linux regroups several operating system families. The most popular Linux OS are Debian, Red Hat, or Suse. But each family has many derived Linux distributions. In November 2006, Oracle released the first version of its operating system, totally based on Red Hat Enterprise Linux: Enterprise Linux. 

When using Automatic Memory Management for Oracle, it is sometimes difficult to monitor the memory usage and in particular to find the right tools to get the right information about currently allocated structures.

Die DOAG Konferenz 2012 ist vorbei. Wie immer war sie sehr bereichernd! Wir von dbi services hatten dieses Jahr über drei Präsentationen die Gelegenheit, unser Wissen in den Bereichen Cloud Control 12c - Thema: Datenbank-Backup und Handling des Java-Diagnostic-Tools JVMD (Gérard Wisson) - sowie Linux Container (David Hueber) an die Teilnehmer weiterzureichen.

I recently helped to create a lab dedicated to a training about Oracle backup and recovery, with Oracle 11g databases. While creating several databases on an Oracle Enterprise Linux 6.1, I wanted to resize the tmpfs to allocate more memory to the databases for AMM (Automatic Memory Management). That was a small challenge :-) ...

For the third day at the OOW, we had the opportunity to "play" with the beta 2 of the upcoming Oracle database release "Oracle Database 12c". This was a Hands-on-Lab session with about 60 participants with at each seat place an Oracle VM guest running on Oracle Linux 5. The goal of this session was to demonstrate the new database feature pluggable database announced by Larry as a multitenant database.

This second day at the Oracle Open World is hotter than the previous one! Today, we focused on Oracle Linux. Oracle Linux roadmap, the Unbreakable Enterprise Kernel (UEK) release 3 is coming in summer 2013. Oracle's strategy consists of developing the new enterprise-class kernel on state of the art hardware, which guarantees to customer to get the most of their hardware (Like Suse for SLES 11).

Facing disk issues such as corruption or block defect is thankfully not happening frequently. However when it does, the diagnose may look sometimes like a real struggle. This is forgetting that disks integrate since years the S.M.A.R.T technology. Good point, it can easily be adressed in Linux command line through smartctl

Last month I was confronted to a very interesting and strange problem while deploying a Cloud Control 12c infrastructure. One of my monitored server was a SuSE Linux Enterprise Server (SLES) 64 bits on which a 11.2.0.3 Oracle database was installed. The x86_64 cloud control 12c agent has been deployed on this server with the standard Cloud Control 12c agent deployment procedure (not the scope of this post). However despite several trials to configure the target database, this one remained in the status "Pending".

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 HP server.

However did you know that these features are also available in command line? This is what hpacucli does…