Settings For Oracle Rac - Hitachi XP P9500 User Manual

3.14 Settings for Oracle RAC

The following are notes on using Oracle RAC:
When you use Oracle Cluster file System in an Oracle RAC environment, set
the
comm_voting
When you use Oracle Cluster file System 2 in an Oracle RAC environment, set
the
O2CB_HEARTBEAT_THRESHOLD
file to the following value:
• If the Lightning 9900 series, Lightning 9900V Series, Hitachi USP,
Universal Storage Platform V/VM or Virtual Storage Platform is being used:
(number-of-paths-connected-to-Oracle-Cluster-file-System-2 x 60 seconds /
2) + 1
• If the Thunder 9500V Series or the Hitachi AMS2000/AMS/WMS/SMS
series is being used:
(number-of-paths-connected-to-Oracle-Cluster-file-System-2 x 30 seconds /
2) + 1
When a host and an Oracle RAC voting disk are connected by multiple paths,
HDLM performs failover processing for those paths (in the same way as for
normal paths) when an I/O timeout occurs for one of the paths.
Note that, depending on the settings of Oracle RAC, Oracle RAC might determine
that a node error has occurred before the failover processing performed by HDLM
is completed, and then re-configure the cluster.
Therefore, when HDLM manages the paths that are connected to an Oracle RAC
voting disk, change the following settings according to your version of Oracle
RAC:
• When using Oracle RAC 10g 10.1.0.3.0 or later or Oracle RAC 11g:
Change the value of
so, use the following table to obtain the value to be specified, and then
change the current value to a value equal to or greater than the value you have
obtained.
parameter in the
/etc/ocfs.conf
parameter in the
to match the type of storage system. To do
MISSCOUNT
3. Creating an HDLM Environment
file.
/etc/sysconfig/o2cbf
to
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