Using Serviceguard Extension for RAC, 5th Edition, June 2007

Serviceguard Configuration for Oracle 10g RAC
Interface Areas
Chapter 242
Automated Oracle Cluster Software Startup and Shutdown
The preferred mechanism that allows Serviceguard to notify Oracle
Cluster Software to start and to request Oracle Cluster Software to
shutdown is the use of Serviceguard packages.
Monitoring
Oracle Cluster Software daemon monitoring is performed through
programs initiated by the HP-UX init process. SGeRAC monitors Oracle
Cluster Software to the extent that CSS is a NMAPI2 group membership
client and group member. SGeRAC provides group membership
notification to the remaining group members when CSS enters and
leaves the group membership.
Allowed Characters for Oracle 10g RAC Cluster Names
Oracle Clusterware uses SGeRAC Group Membership Service to get the
node status, it registers a group in SGeRAC cmgmsd daemon with Oracle
cluster name. Since the valid group name in SGeRAC only allows alpha
letter (a-z, A-Z), decimal digital (0-9), underscore (_), dollar sign ($) and
number sign(#), only these characters are allowed in Oracle 10g
Clusterware cluster name.
Shared Storage
SGeRAC supports shared storage using HP Shared Logical Volume
Manager (SLVM), Cluster File System (CFS) and Cluster Volume
Manager (CVM); CFS and CVM are not supported on all versions of
HP-UX (on HP-UX releases that support them; see “About Veritas CFS
and CVM from Symantec” on page 22).
The file /var/opt/oracle/oravg.conf must not be present so Oracle
Cluster Software will not activate or deactivate any shared storage.
Multipath
Multipath is supported through either SLVM pvlinks or CVM Dynamic
Multipath (DMP). In some configurations, SLVM or CVM does not need
to be configured for multipath as the multipath is provided by the
storage array. Since Oracle Cluster Software checks availability of the
shared device for the vote disk through periodic monitoring, the
multipath detection and failover time must be less than CRS's timeout
specified by the Cluster Synchronization Service (CSS) MISSCOUNT. On