I have been recently facing following error when using yum/dnf: There are unfinished DB8actions remaining. You might consider running yum-complete-DB8action, or “yum-complete-DB8action –cleanup-only” and “yum history redo last”, first to finish them. If those don’t work you’ll have to try removing/installing packages by hand (maybe package-cleanup can help). And I was wondering how to deal with this. I would like…
After performing an in-place Oracle linux upgrade I could realize that the oracle service was unusable. I would like to share with you the reason and how to resolve it. Problem description After in-place Oracle linux upgrade from el7 to el8, I could see that the oracle service was not working any more. This service is used to automatically start…
I recently had to upgrade an Oracle Linux production server running 19.30 Oracle databases for one of our customer. In this post, I will share with you the full set of steps that need to be carried out to run an in-place Oracle Linux upgrade when running Oracle databases. The method will be the same to upgrade from Oracle Linux…
This tutorial showing simple database upgrade to 26ai using traditional method and autoupgrade tool, For operational databases please properly test and plan your upgrade. https://docs.oracle.com/en/database/oracle/oracle-database/26/fppad/upgrading-oracle-database-software.html This is one from 3 Articles related to 26.1 upgrade: Step 1. Downloading software and preparing Linux Download Base Gold image from Oracle support software from latest Oracle AI Database 26ai (23.26.1) for Linux x86-64…
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 it can contain bugs which are fixed within RHEL and the other clones. Overview of RHEL support cycles Red Hat Enterprise…
As you might be aware, CentOS 8 is end of life since the 31st of December 2021. If you are still using and running CentOS 8, you might want to migrate to some alternative distributions in order to keep a Red Hat compatibility. Those alternative distributions might be chosen between : Rocky Linux AlmaLinux Red Hat Enterprise Linux Oracle Linux…
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 customer and all are running as virtual machines. The very same customer has many EC2 instances running on CentOS 7. Migrating away from CentOS 7 is…
There is a lot of roumors around since it was anounced to switch CentOS 8 from a Downstream Build from RHEL 8 to a Upstream Build for RHEL 8 on December 8th 2020. Many people asked why a second Upstream to Fedora and the way of communication choosen was sub optimal in diplomatic words. Cutting the support date from 31st…
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 ASMFD) is a kernel module that resides in the I/O path of the Oracle ASM disks. Oracle ASM uses the filter…
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 data center where the system is running nor did we have access to the console. What to do? Actually it…
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 in /etc/limits.d – that is displayed by ‘ulimit -n’. It’s the number of open files – ‘nofile’ – and here again we…
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 limit? Nproc and ps Nproc is defined at OS level to limit the number of processes per user. Oracle 11.2.0.4 documentation…
