Oracle Linux

Comparison of support cycles RHEL and Clones

This blog is a comparison about the support periods of RHEL and the RHEL clones like AlmaLinux, Enterprise Linux, Oracle Linux and Rocky Linux and a look back to CentOS. CentOS Stream is a pre release of RHEL, so(…)

Migrating a CentOS 7 EC2 instance to Rocky Linux 8

Some time ago I've written about migrating a CentOS 8 machine to Red Hat 8, because CentOS 8 reached end of life last December. We did that for all CentOS 8 installations at that(…)

Configure AFD with Grid Infrastructure software (SIHA & CRS) from very beginning.

Introduction : Oracle ASM Filter Driver (Oracle ASMFD) simplifies the configuration and management of disk devices by eliminating the need to rebind disk devices used with Oracle ASM each time the system is restarted. Oracle ASM Filter Driver (Oracle(…)

Linux Magic System Request Key Hacks

Recently at a customer we needed to power-cycle a database system because we wanted to be sure that a cluster resource fails over to a remaining node as expected. The issue was that we did not have access to the(…)

Linux: how to monitor the nofile limit

By Franck Pachot . In a previous post I explained how to measure the number of processes that are generated when a fork() or clone() call checks the nproc limit. There is another limit in /etc/limits.conf – or(…)

Linux: how to monitor the nproc limit

By Franck Pachot . You probably know about ‘nproc’ limits in Linux which are set in /etc/limits.conf and checked with ‘ulimit -u’. But do you know how to handle the monitoring and be alerted when you’re close the fixed(…)

Overview of Oracle Linux releases and kernels

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(…)