RAC Archives - Techgoeasy

Useful Cluster command in Oracle clusterware 10g , 11g and 12c

Oracle Clusterware is the Clusterware technology from oracle to Manage the Oracle RAC database on various platforms. Oracle has provided cluster utilities to manage it. Here are some of the useful oracle Cluster commands(oracle RAC commands) in 10g,11g, and 12c CRSCTL command Cluster Control utility performs the various administrative operations of Oracle Clusterware. It is …

Useful Cluster command in Oracle clusterware 10g , 11g and 12c Read More »

Oracle Real Application Clusters( Oracle RAC)

Oracle, Oracle Database

In this article I will talk about Oracle RAC (Oracle Real application clusters) ORACLE RAC CONCEPTS AND FUNCTIONAL OVERVIEW RAC is the ability to have two or more instances connect to the same database. These instances reside on separate servers, thereby allowing each instance to make full use of the processing ability of each server. …

Oracle Real Application Clusters( Oracle RAC) Read More »

How Oracle RAC handles instance failure and recovery

Oracle, Oracle Database

Oracle uses a simple mechanism of a heartbeat to detect instance failure of a node in a Oracle RAC cluster. The cluster manager software detects if it cannot receive the heartbeat of the other instances and if it does not the recovery process begins. From what I can find, this heartbeat is provided by the …

How Oracle RAC handles instance failure and recovery Read More »

How to add any node to Oracle RAC cluster in 10g and 11g

Oracle, Oracle Database

Step 1: Prepare the server to be added a) Shared the Database Storage b) Shared the OCR and voting disk c) Check the new box for ssh connectivity Step 2: Run cluvfy cluvfy stage -post hwos -n SUN12OS Step 3: Add node to Cluster using the $ORACLE_HOME/oui/bin/addnode.sh from the node existing in cluster And choose …

How to add any node to Oracle RAC cluster in 10g and 11g Read More »