Using Serviceguard Extension for RAC, 10th Edition, April 2013

The file /var/opt/oracle/oravg.conf must not be present so Oracle Cluster Software will
not activate or deactivate any shared storage.
Multipathing
Multipathing is automatically configured in HP-UX 11i v3 (this is often called native multipathing).
Multipathing 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 SGeRAC configurations, the CSS MISSCOUNT value is set to 600 seconds. Multipath failover
time is typically between 30 to 120 seconds. For information on Multipathing and HP-UX 11i v3,
see “About Multipathing” (page 34).
OCR and Vote Device
Shared storage for the OCR and Vote device should be on supported shared storage volume
managers with multipath configured and with either the correct multipath failover time or CSS
timeout.
Mirroring and Resilvering
On node and cluster wide failures, when SLVM mirroring is used and Oracle resilvering is available,
the recommendation for the logical volume mirror recovery policy is set to either full mirror
resynchronization (NOMWC) or fast resynchronization (MWC) for control and redo files and no
mirror resynchronization (NONE) for the datafiles since Oracle would perform resilvering on the
datafiles based on the redo log.
NOTE: If Oracle resilvering is not available, the mirror recovery policy should be set to either
full mirror resynchronization (NOMWC) or fast resynchronization (MWC) of all control, redo, and
datafiles.
Contact Oracle to determine if your version of Oracle RAC allows “resilvering” and to appropriately
configure the mirror consistency recovery policy for your logical volumes.
For more information on using NOMWC and MWC, refer to the HP-UX System Administrator's
Guide: Logical Volume Management HP-UX 11i Version 3 at www.hp.com/go/hpux-core-docs
—> HP-UX 11i V3.
Shared Storage Activation
Depending on your version of Oracle Cluster Software, the default configuration for activation of
the shared storage for Oracle Cluster Software may be controlled by the /var/opt/oracle/
oravg.conf file. For the default configuration where the shared storage is activated by SGeRAC
before starting Oracle Cluster Software or RAC instance, the oravg.conf file should not be
present.
Listener
Automated Startup and Shutdown
CRS can be configured to automatically start, monitor, restart, and halt listeners.
If CRS is not configured to start the listener automatically at Oracle Cluster Software startup, the
listener startup can be automated with supported commands, such as srvctl and lsnrctl,
through scripts or SGeRAC packages. If the SGeRAC package is configured to start the listener,
the SGeRAC package would contain the virtual IP address required by the listener.
28 Serviceguard Configuration for Oracle 10gR2, 11gR1, or 11gR2 RAC