Using Serviceguard Extension for RAC, 9th Edition, September 2010

2 Serviceguard Configuration for Oracle 10g, 11gR1, or
11gR2 RAC
This chapter shows the additional planning and configuration that is needed to use Oracle Real
Application Clusters 10g/11gR1/11gR2 with Serviceguard. The following topics are presented:
• “Interface Areas”
• “Oracle Cluster Software”
• “Planning Storage for Oracle Cluster Software”
• “Planning Storage for Oracle 10g/11gR1/11gR2 RAC”
• “Installing Serviceguard Extension for RAC ”
• “Installing Oracle Real Application Clusters”
• “Cluster Communication Network Monitoring”
• “Creating a Storage Infrastructure with LVM”
• “Creating a Storage Infrastructure with CFS”
• “Creating a Storage Infrastructure with CVM”
• “Installing Oracle 10g, 11gR1, or 11gR2 Cluster Software”
Interface Areas
This section documents interface areas where there is expected interaction between SGeRAC,
Oracle 10g/11gR1/11gR2 Cluster Software, and RAC.
Group Membership API (NMAPI2)
The NMAPI2 client links with the SGeRAC provided NMAPI2 library for group membership
service. The group membership is layered on top of the SGeRAC cluster membership where all
the primary group members are processes within cluster nodes. Cluster membership has node
names and group membership has process names. Upon a SGeRAC group membership change,
SGeRAC delivers the new group membership to other members of the same group.
SGeRAC Detection
When Oracle 10g/11gR1/11gR2 Cluster Software is installed on a SGeRAC cluster, Oracle Cluster
Software detects the existence of SGeRAC, and CSS uses SGeRAC group membership.
Cluster Timeouts
SGeRAC periodically check heartbeat member timeouts to determine when any SGeRAC cluster
member has failed or when any cluster member is unable to communicate with the other cluster
members. CSS uses a similar mechanism for CSS memberships. Each RAC instance group
membership also has a member timeout mechanism, which triggers Instance Membership
Recovery (IMR).
NOTE: HP and Oracle support SGeRAC to provide group membership to CSS.
Serviceguard Cluster Timeout
The Serviceguard cluster heartbeat timeout is set according to user requirements for availability.
The Serviceguard cluster reconfiguration time is determined by the cluster timeout, configuration,
the reconfiguration algorithm, and activities during reconfiguration.
Interface Areas 27