Serviceguard Extension for RAC Version A.11.16 Release Notes, 2nd Edition, September 2004

Serviceguard Extension for RAC Version A.11.16 Release Notes Second Edition
What’s in this Version
Chapter 1 11
Serviceguard Extension for RAC does not Support
Mixed Clusters
For Serviceguard Extension for RAC, 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 servers and
Integrity servers, or different operating system releases.
NOTE HP-UX 11i v2 September 2004 update supports both HP 9000 servers
and/or Integrity servers.
NOTE Rolling upgrade is not supported from releases prior to A.11.15.
Support for Faster Detection of Crashed Oracle
Processes
Starting with version A.11.15, Serviceguard Extension for RAC, the
monitoring of cmgmsd registered Oracle processes have been enhanced to
use select (). The result is faster detection of crashed Oracle processes.
Since the socket used for cmgmsd client registration is now also used for
monitoring, socket connections will not be released. Therefore, each
cmgmsd client will require one file descriptor for socket during run time.
Clients of cmgmsd can be Oracle foreground and background processes.
Foreground processes are needed to serve Oracle DB clients.
Depending on how Oracle DBMS is configured, each foreground process
can serve one or more DB clients. You need to adjust the maxfiles
parameter to make sure there are enough file descriptor to support the
needed number of Oracle foreground and background processes.