A clustered environment can be described as a group of independent
computer systems, known as nodes or hosts, that work together as a
single system to ensure that mission-critical applications and resources
remain available to clients.

In order for the Object Spawner to run in a clustered environment, the
Object Spawner has to access a given host name instead of performing a
TCP hostname() lookup.  A cluster has a logical name (DNS alias) that
can be used for all nodes instead of each nodes individual hostname.

In order for the Object Spawner to recognize the DNS alias that is
associated with the cluster, the Object Spawner must be started with the
-dnsMatch option.

For example, SAS servers and Object Spawners are installed on two
different machines (machine1.my.com and machine2.my.com).  The DNS alias
(server1.my.com) resolves to both of these machines.  If the client
sends a request to the alias (server1.my.com in this example), one of
the two Object Spawners will receive it.

In this example, the Object Spawner would be started with -dnsMatch
option and look something similar to the following:

  UNIX>  !sasroot/utilities/bin/objspawn -configfile /tmp/objspawn.cfg
  -dnsMatch server1.my.com

For more information on using the -dnsMatch option as a parameter on the
Object Spawner, reference the SAS Integration Technologies : Server
Administrator's Guide: Spawner Invocation Options.


A fix for SAS 9.1.3 (9.1 TS1M3) for this issue is available at:

http://www.sas.com/techsup/download/hotfix/e9_sbcs_prod_list.html#014227

For customers running SAS with Asian Language Support (DBCS), this
fix should be downloaded from:

http://www.sas.com/techsup/download/hotfix/e9_dbcs_prod_list.html#014227

Operating System and Release Information

A fix for SAS 9.1.3 (9.1 TS1M3) for this issue is available at:

A fix for SAS 9.1.3 (9.1 TS1M3) with Asian Language Support (DBCS) for this issue is available at :