Oracle RAC

Oracle EM agent 12c thread leak on RAC

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(…)

Oracle policy managed databases: Policies and policy sets

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(…)

Oracle RAC 11.2.0.2: A disturbing loop in a “ohasd” startup script

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(…)

Oracle Database Appliance (ODA) – an overview

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(…)

Resource FAILOVER dans Grid Infrastructure

Dans le cadre d’un cluster Oracle Grid Infrastructure 11g R2 utilisé pour gérer des bases de données en mode FAILOVER, j’ai été amené à me pencher sur l’algorithme de basculement d’une ressource et des paramètres le régissant. On trouve dans(…)