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Optimizing IBM AIX and IBM DB2 Universal Database

When running Siebel Universal Queuing on the IBM AIX platform with an IBM DB2 Universal Database, an experienced system administrator should perform the following steps in order to optimize performance.

NOTE:  These settings assume that Siebel Universal Queuing and IBM DB2 Universal Database are running on different machines, each running IBM AIX.

On the IBM AIX server machine on which Siebel Universal Queuing is running, add the following lines to the file /etc/rc.net:

if [ -f /usr/sbin/no ] ; then
        /usr/sbin/no -o tcp_sendspace=65535
        /usr/sbin/no -o tcp_recvspace=65535
        /usr/sbin/no -o tcp_pmtu_discover=1
        /usr/sbin/no -o tcp_nagle_limit=1
        /usr/sbin/no -o fasttimo=50
fi

On the IBM AIX server machine on which IBM DB2 Universal Database is running, add the following lines to the file /etc/rc.net:

if [ -f /usr/sbin/no ] ; then
        /usr/sbin/no -o fasttimo=200
        /usr/sbin/no -o tcp_sendspace=32768
        /usr/sbin/no -o tcp_recvspace=32768
fi