Using Serviceguard Extension for RAC, 10th Edition, April 2011

J. SGeRAC Toolkit Limitation/Restriction
K. SGeRAC Toolkit Legacy Package to Modular Package Migration
L. Migration of Legacy CFS Disk group and Mount point Packages to Modular
CFS Disk group and Mount point Packages (CFS DG-MP).
M. SGeRAC Toolkit Adding new ASMDG MNP Package to the existing
configured OC MNP and RAC MNP
N. SGeRAC Toolkit Package Cleanup
O. SGeRAC Toolkit Whitepaper Link
PREFACE:
This README file describes the SGeRAC Toolkit which enables integration of
Oracle Real Application Clusters (RAC) with HP Serviceguard Extension for
Real Application Clusters (SGeRAC). This document covers the Toolkit file
structure, files, configuration parameters and procedures, administration,
supported configurations, known problem and workaround, and the support
restrictions of this version of Toolkit. A link to a whitepaper on the same
topic is also included.
This document assumes that its readers are already familiar with Serviceguard
(SG), SGeRAC, and Oracle RAC, including installation and configuration
procedures.
This version of SGeRAC Toolkit supports Oracle 10g Release 2, 11g Release 1
and 11g Release 2 versions/revision of RAC only.
A. Overview
Oracle 10g and later database server software offers a built-in feature called Oracle
Clusterware for building highly available RAC and single instance databases
in clustered configurations. Since the release of Oracle 10g, HP has
recommended a combined SGeRAC-Oracle Clusterware configuration for RAC
deployments on HP-UX. In the combined stack, SGeRAC provides cluster
membership information to the Oracle Clusterware and provides clustered
storage to meet the needs of Oracle Clusterware and RAC database instances.
The Oracle Clusterware manages the database and associated resources (e.g.
database instances, services, virtual IP addresses, listeners, etc), and ASM
instances if configured.
The startup and shutdown of the various components in the combined SGeRAC-Oracle
Clusterware configuration must be coordinated in the proper sequence. The storage
needed for the operation of Oracle Clusterware must be activated before the
Oracle Clusterware processes are started, and the storage needed for the operation
of a RAC database instance must be activated before the RAC database instance
is started. On shutdown, the sequence is reversed. Oracle Clusterware and the RAC
database instance must be halted before deactivating the storage needed by these
two entities.
The SGeRAC Toolkit provides the mechanism to coordinate the ordering of the
pieces in the combined SGeRAC/Oracle RAC stack and the dependency between the
Oracle Clusterware and Oracle RAC instances. Also, the Toolkit offers a
uniform, easy-to-manage and intuitive method to coordinate the operation
across the full range of storage management options supported by SGeRAC.
The SGeRAC Toolkit leverages multi-node package (MNP) and package dependency
features supported in SG/SGeRAC A.11.17 or later. In the SGeRAC Toolkit,
scripts for configuring three MNPs - Oracle Clusterware MNP (OC MNP), RAC
database instance MNP (RAC MNP) and Oracle Automatic Storage Management (ASM)
Diskgroup MNP (ASMDG MNP) are provided. The "OC MNP" allows SGeRAC to
start/stop and monitor Oracle Clusterware processes. The "RAC MNP" allows
SGeRAC to start/stop and monitor processes of a RAC database instance. The
"ASMDG MNP" allows mounting/unmounting and monitoring of the ASM Disk groups.
Since Oracle Clusterware must be running before any RAC database instances
can be started, RAC MNP packages are required to define a 'same node up'
package dependency on the OC MNP. When using ASM for storage management,
the ASM DG MNP must have a package dependency on the OC MNP and the
corresponding RAC MNP packages must have a "same node up" dependency on
the ASM DG MNP.
In SGeRAC, the Oracle Clusterware storage (Oracle Cluster Registry
and voting disk) can be configured as:
- Raw logical volumes managed by Shared Logical Volume Manager (SLVM)
or Cluster Volume Manager (CVM)
- Files managed by Cluster File System (CFS)
- Oracle Automatic Storage management (ASM) Disk Groups (from Oracle 11g R2)
The members of the ASM Disk Groups can be either shared raw logical volumes
managed by SLVM (ASM over SLVM) or HP-UX raw disks ( ASM over HP-UX raw disks)
In SGeRAC, the RAC database files can be configured as
- Raw logical volumes managed by Shared Logical Volume Manager (SLVM)
or Cluster Volume Manager (CVM)
- Files managed by Cluster File System (CFS)
- Oracle Automatic Storage management (ASM) Disk Groups (from Oracle 11g R2)
The members of the ASM Disk Groups can be either shared raw logical volumes
managed by SLVM (ASM over SLVM) or HP-UX raw disks ( ASM over HP-UX raw disks)
Dependency structure while using different storage management options
1. Dependency structure in the case of SLVM
94 SGeRAC Toolkit for Oracle RAC 10g or later