Oracle Tips by Burleson

Oracle10g Grid Computing with RAC
Chapter 6 - Install, Configure and Database Creation

Using HACMP

The IBM High Availability Cluster Multi-Processing for AIX (HACMP) Version 4.4.x has been in use for quite sometime. HACMP is designed to detect system failures and manage failover, where necessary, to a recovery processor with a minimal loss of end-user time. HACMP 4.4.x offers improved usability, more flexible installation options, and additional hardware and software support for RS/6000 customers with mission critical applications.

We examine the RAC setup in two ways:

  Using the VSD using PSSP on RS/6000 SP systems.

  Using HACMP/ES on RS/6000 and pSeries machines.

The VSD are to be used with a SP machine running AIX 4.3.3, and PSSP 3.2. PSSP stands for IBM’s Parallel System Support Programs. The HACMP/ES is used for the clusters of pSeries machines with AIX 4.3.3 and above.

What is VSD?

The IBM VSD (Virtual Shared Disk) software is a component of PSSP that allows data on disks attached to some SP nodes to be shared with other nodes using a high-speed interconnect network like SP Switch or SP Switch2. The Parallel System Support Programs (PSSP) software provides a comprehensive suite of applications for the installation, operation, management, and administration of the RS/6000 SP attached servers and Clustered Enterprise Servers (CES) from a single point of control.