RAC

Grid Clusterware 26ai 2 node RAC upgrade from 19c rolling forward

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(…)

Convert Single Instance database to RAC on an ODA

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(…)

Oracle 21c : Two nodes Grid Infrastructure Installation

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(…)

Oracle MAA reference architecture and HA, DR, RTO, RPO

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(…)

RAC to RON then RON to RAC and singleton service

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(…)

The scripts of my DOAG 2015 session: Automated GI/RAC staging with Cobbler and VirtualBox

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(…)

RAC buffer states: XCUR, SCUR, PI, CI

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(…)

IOUG Collaborate #C15LV

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(…)