HP Serviceguard Extension for RAC (SGeRAC) manual SMS bundle

NOTE: Beginning with HP-UX 11i v3 1109 HA-OE/DC-OE, SGeRAC is included as a licensed bundle at no additional cost. To install SGeRAC A.11.20 on your system during 1109 HA-OE/DC-OE installation, you must select T1907BA (SGeRAC) in the Software tab.

If you are using any one of the bundles namely, T2771DB, T2773DB, T2774DB, T2775DB, T8684DB, T8694DB, T8685DB, T8695DB, T2774EB, T8684EB, or T8694EB) and if you select SGeRAC during upgrade from HP Serviceguard Storage Management Suite (SMS) cluster, then this configuration is supported only if Oracle RAC is deployed over SLVM. This happens because these Serviceguard SMS bundles either contain only VxVM which cannot be used for Oracle RAC or they are not Oracle specific bundles.

If SGeRAC is not installed as a part of HP-UX 11i v3 1109 HA-OE/DC-OE, it is automatically installed during the installation of Serviceguard SMS bundles (T2777DB, T8687DB, T8697DB, T2777EB, T8687EB, T8697EB).

If SGeRAC is installed with HP-UX 11i v3 1109 HA-OE/DC-OE, then depending upon the available version of Serviceguard and SGeRAC in the SMS bundle, the installation of Serviceguard SMS may succeed or fail.

The table below discusses the different installation scenarios for Serviceguard SMS bundles:

SMS bundle Impact on Serviceguard SMS installation

Install SMS bundle 7 which has the same version of Serviceguard and SGeRAC version available on the 1109 HA-OE/DC-OE.

Install Serviceguard SMS bundle 7 which has a higher version of Serviceguard and SGeRAC version available on the 1109 HA-OE/DC-OE.

Install SMS bundle 7 which has a lower version of Serviceguard and SGeRAC version available on the 1109 HA-OE/DC-OE.

Continues the installation of Serviceguard SMS by skipping the installation of Serviceguard and SGeRAC.

Installation of Serviceguard SMS follows installation of a higher version of Serviceguard and SGeRAC.

Installation of Serviceguard SMS fails indicating that higher Serviceguard version is already available on the system.

Overview of SGeRAC and Oracle 10g, 11gR1, and 11gR2 RAC

Starting with Oracle 10g RAC, Oracle has bundled its own cluster software. The initial release is called Oracle Cluster Ready Service (CRS). CRS is used both as a generic term referring to the Oracle Cluster Software and as a specific term referring to a component within the Oracle Cluster Software. At subsequent release, Oracle generic CRS is renamed to Oracle Clusterware. Oracle Clusterware is the generic term referring to the Oracle Cluster Software.

The Oracle Cluster Software includes the following components: Cluster Synchronization Services (CSS), Cluster Ready Service (CRS), and Event Management (EVM).

CSS manages the Oracle cluster membership and provides its own group membership service to RAC instances. When installed on an SGeRAC cluster, CSS utilizes the group membership service provided by SGeRAC.

CRS manages Oracle's cluster resources based on configuration—including start, stop, and monitor, and failover of the resources.

EVM publishes events generated by CRS and may run scripts when certain events occur.

When installed on an SGeRAC cluster, both the Oracle Cluster Software and RAC can continue to rely on the shared storage capability, networking monitoring, as well as other capabilities provided through Serviceguard and SGeRAC.

16 Introduction to Serviceguard Extension for RAC