Serviceguard Extension for RAC Version A.11.18 Release Notes, 4th Edition, September 2008

NOTE: For the most up-to-date compatibility information, see the
Serviceguard/SGeRAC/SMS/Serviceguard Mgr Plug-in Compatibility and Feature Matrix at
http://docs.hp.com -> High Availability -> Serviceguard -> Support Matrixes
Support for the SGeRAC Toolkit
The SGeRAC Toolkit provides documentation and scripts to simplify the integration of SGeRAC
and the Oracle 10g RAC stack. It also manages the dependency between Oracle Clusterware and
Oracle RAC instances with a full range of storage management options supported in the
Serviceguard and SGeRAC environment.The framework provided by the SGeRAC toolkit is
unique in the high level of multi-vendor (Oracle, Symantec, HP) and multi-storage platform
(CFS, SLVM, CVM, ASM over SLVM) integration it offers.
SGeRAC toolkit uses the multi-node package and simple package dependency features integrated
with HP Serviceguard and SGeRAC version A.11.18, which provides a uniform, easy-to-manage
and intuitive method to coordinate the operations of the SGeRAC and Oracle Clusterware
combined software stack. The toolkit is supported across the full range of storage management
options supported by SGeRAC: CFS, SLVM, CVM and ASM (over SLVM). For software download
and product information, refer to the following:
• Use of Serviceguard Extension for RAC Toolkit with Oracle 10g RAC white paper located at
http://docs.hp.com -> High Availability -> Serviceguard Extension for Real Application
Clusters -> White Papers.
• README file that accompanies the SGeRAC Toolkit. To view go to /opt/cmcluster/
SGeRAC/toolkit/README after the installation.
• For software download information on the SGeRAC Toolkit, go
tohttp://software.hp.com.
NOTE: Modular packages are not yet supported in the SGeRAC Toolkit.
Support for 8192 Oracle Server Processes for Oracle 9i, 10gR2 and 11gR1 RAC
The maximum number of Oracle server processes cmgmsd can handle is 8192. When there are
more than 8192 server processes connected to cmgmsd, it will start to reject new requests. Oracle
foreground server processes are needed to handle the requests of the Data Base (DB) client
connected to the DB instance.
NOTE: Starting with Oracle 10g and later, Oracle Clusterware processes register with cmgmsd
while Oracle server processes register with Oracle Clusterware. The maximum number of Oracle
server processes supported is determined by Oracle Clusterware. The maximum number of
processes registered by Oracle Clusterware should not exceed the maximum supported by
cmgmsd.
Serviceguard Extension for RAC does not support Mixed Clusters
For SGeRAC, the nodes in the cluster must be on the same architecture. SGeRAC does not support
clusters containing mixed architectural nodes, which consist of HP 9000 and HP Integrity servers,
or different operating system releases.
About Device Special Files (DSFs)
HP-UX releases up to and including 11i v2 use a naming convention for device files that encodes
their hardware path. For example, a device file named /dev/dsk/c3t15d0 would indicate
SCSI controller instance 3, SCSI target 15, and SCSI LUN 0. HP-UX 11i v3 introduces a new
nomenclature for device files, known as agile addressing (sometimes also called persistent LUN
binding). Under the agile addressing convention, the hardware path name is no longer encoded
What’s in this Version 13