Architecture considerations and best practices for architecting an Oracle RAC solution with Serviceguard and SGeRAC

Beginning with Oracle 10.1.0.4, Oracle made improvements in coordination between Oracle

Clusterware and third-party clusterware, enabling the use of SGeRAC packages to manage the

storage needs of Oracle Clusterware and RAC database instances:

• Support for the on-demand startup and shutdown of Oracle Clusterware

and RAC database

instances

The startup and shutdown of Oracle Clusterware—as HP-UX is taken up to init level 3 and taken

down to a lower level—can be performed automatically or on demand.

The startup and shutdown of the RAC database instance—as Oracle Clusterware itself is started up

and shut down—can be performed automatically or on demand.

• Support for the invocation of Oracle Clusterware commands from customer-developed scripts

This includes invocation of such commands from SGeRAC package control scripts; hence, SGeRAC

packages can invoke commands to start up and shutdown Oracle Clusterware and/or RAC

database instances.

These improvements make it possible to use SGeRAC packages to properly sequence the startup and

shutdown of Oracle Clusterware and RAC database instances with respect to the SGeRAC-managed

storage used by these entities.

The SGeRAC Toolkit uses Serviceguard/SGeRAC version A.11.17 (or later) multi-node packages and

package dependency features to provide a uniform, intuitive, and easy-to-manage method to

coordinate between SGeRAC and Oracle Clusterware.

Additionally, the SGeRAC Toolkit helps to manage all the storage options supported by SGeRAC;

CFS, SLVM, CVM, and ASM over SLVM.

For more information, refer to the

Use of Serviceguard Extension for RAC Toolkit with Oracle RAC

10g Release 2 or later, March 2009.

See Oracle Support (http://support.oracle.com login required) Bulletin ID: 332257.1 for instruction on how to disable CRS to start up at system

boot time.

See Oracle Support (http://support.oracle.com login required) Bulletin ID: 298073.1 for instruction on how to disable CRS to automatically

start up RAC instance.