Intro One of the advantages of Oracle grid Infrastructure is to restart all managed resources (databases, asm, listeners,…etc) automatically whenever you (re)start the cluster service (crs) or reboot the whole server. I recently had to patch an oda where the client still had few listeners (with non default ports) managed locally and not through grid. …
Read more “Convert local listeners to Oracle Grid managed listeners”
Intro Infrastructure teams are usually more keen to maintain a network stability rather than altering their existing configuration every other day.This means that once the application and database hosts are provisioned and running, the DBA won’t witness a topology change unless a migration of the servers/applications are in the pipes. But for highly available environment …
Read more “Add SCAN VIPs to Oracle RAC with zero “listener” downtime”
Intro Have you ever finished a lab in your laptop with several virtual machines connected to each other and thought “Well that was neat! but how can I create a backup in my external hard drive and run it again at work or in any other computer?” The answer lays in this very article. …
Read more “Clone a RAC 12c VM environment with Virtualbox (import/export)”
Introduction: Oracle provides many options for preventing downtime and data loss, all of which make up the Maximum Availability Architecture (MAA). The Oracle Maximum Availability Architecture offers a set of standard reference architectures–Bronze, Silver, Gold, and Platinum Solutions– that comply with Customer Business Objectives. With multiple instances, the RAC system gives a transparent HA and …
Read more “MAA setup– Creating Single instance Physical Standby for RAC Primary – 12c”
Introduction: The goal of this section is to explore some of the Oracle Clusterware feaures as node fencing, callouts, as well as working with services and Policy managed servers . To know more about the cluster lab used in this article please have a look on my previous RACattack on Redhat 7 blog post >> …
Introduction: This document provides a step-by-step deployment procedure with some of best practices to install and configure an Oracle Real Application Clusters (RAC) Database 12c Release 1 (12.1)* with Oracle ASM on Linux RedHat Entreprise 7 virtual machines (Virtualbox). Most of it is inspired by the RACAttack project that was written collaboratively by many authors …