This is third part of 26ai migration blog. We will upgrade here 2 node Clusterware with ASM in 19c. We will use newest 23.26.1 GoldImages from oracle support. This tutorial showing main steps how to perform upgrade, its not procedure to upgrade your production environment, please checkout official documentation from oracle and do proper planning and prechecks before you do…
In this article, I will show you how to convert a SI (Single Instance) database to a RAC database on an ODA using rconfig. Of course this is only possible with the ODA 2-HA model as it comes with a 2 nodes cluster. There is no way to do RAC database on the ODA light model. I will also ensure…
By Mouhamadou Diaw Oracle 21c is actually released in the cloud, and I did some tests to setup a Grid infrastructure cluster with two nodes. I used following two VM servers to test racp1vm1 racp1vm2 Below the addresses I am using. Note that a dns server is setup 1 2 3 4 5 6 192.168.0.101 racp1vm1.dbi.lab racp1vm1 –public network 192.168.0.103…
By Franck Pachot . I may have mentioned in some previous blog post that, in my opinion, the names of Oracle Database features make sense on the vendor product management context more than in a user context. I’m not saying that it is good or bad. There are so many features, that can be combined, and that evolved for many…
By Franck Pachot . You will probably never do it, but let’s imagine you have a RAC database, policy managed, with singleton service. Then you convert it to RAC One Node and you change your mind and convert it back to RAC. Be careful, the singleton services are converted to uniform ones when converting to RAC My RACDB database is…
I promised to upload the scripts of my session to our blog. So, here they are: create_12102_gi_rac_project.sh: This one creates the 12.1.0.2 GI/RAC project on the cobbler server finish_ora_12102_gi_rac_project.sh: This one does the configuration of the GI/RAC on the last node ora12102_gi_rac.ks: The 12.1.0.2 GI/RAC kickstart file pg940.ks: Template kickstart file for PostgreSQL 9.4 create_940_postgres_project.sh: Template project file for PostgreSQL…
By Franck Pachot . In RAC, blocks are copied across instances by the Global Cache Service. In single instance, we have only two status: CR for consistent read clones where undo is applied, and CUR for the current version that can be modified (then being a dirty block). I’ts a bit more complex in RAC. Here is a brief example…
By Franck Pachot . The IOUG – Independant Oracle User Group – has a great event each year: the COLLABORATE. This year it’s in April 12-16, 2015 at The Mandalay Bay Resort & Casino in Las Vegas. I’ll be a speaker and a RAC Attack Ninja as well. IOUG COLLABORATE provides all the real-world technical training you need – not…
By Franck Pachot . In a previous post about nproc limit, I wrote that I had to investigate the nproc limit with the number of threads because my Oracle 12c EM agent was having thousands of threads. This post is a short feedback about this issue and the way I have found the root cause. It concerns the enterprise manager…
In this post, I will continue my experiments with Oracle policy managed databases with Grid Infrastructure, and present one of the new features introduced with Grid Infrastructure 12c last June: the cluster configuration policies and policy sets. It allows the administrator to dynamically reconfigure all server pools at a time, with a single command, according to the business workload. To…
Last February, I performed an operating system rolling upgrade on a four-nodes RAC cluster (11.2.0.2). I then faced a strange problem when restarting the operating system… The first step of the procedure was to stop all Grid Infrastructure and Database services running on the first node as well as to disable Cluster and ASM autostart. The following command is supposed…
Last february, I had the chance to attend an Oracle presentation about ODA: Oracle Database Appliance. I found it interessant to share what I have learned about this technology. Which, I confess, convinced me. Summary Before developing the software and hardware components, here is a small overview of ODA. ODA is an all in one solution providing Hardware, Operating System,…
