CRSCTL command examples

CRSCTL is an interface between you and Oracle Clusterware, parsing and callingOracle Clusterware APIs for Oracle Clusterware objects.Oracle Clusterware 11g release 2 (11.2) introduces cluster-aware commands withwhich you can perform check, start, and stop operations on the cluster. You can runthese commands from any node in the cluster on another node in the cluster, or… Continue reading CRSCTL command examples

Basic Clusterware Administration Commands

In the previous blog we talk about Oracle Clusterware basics and definitions. Now let's talk about basic administration commands. ¬†olsnodesThe OLSNODES command provides the list of nodes and other information for all nodes participating in the cluster. The syntax for the¬†OLSNODES¬†command is:olsnodes [-n] [-i] [-l] [-v] [-g] [-p]If you issue the OLSNODES command without any… Continue reading Basic Clusterware Administration Commands

Oracle Clusterware 11gR2 Basics

In this blog will talk about Oracle Clusterware basics. It is really needed to know the basics before we can start talking about Clusterware installation, configuration and administration. The below information is an extract from the Oracle Clusterware, Administration and Deployment Guide 11g Release 2 (11.2) ( is Oracle Clusterware?Oracle Clusterware enables servers to communicate… Continue reading Oracle Clusterware 11gR2 Basics

Cleanup After Failed Installation Oracle Clusterware 11gR2

In this blog I will talk about how to cleanup a failed installation of the Oracle Clusterware 11gR2 in one particular node. I was installing the new Oracle Clusterware in my home lab by follwing Tom Kyte's instructions (, then went through the part that the installer GUI needs us to run the… Continue reading Cleanup After Failed Installation Oracle Clusterware 11gR2