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Tuning AOM Instances for Solaris

Solaris machines running more than 50 Application Object Manager instances (multithreaded processes for AOM) may experience a situation where one or more of the processes do not start correctly, while the rest start and function normally. The log files for the processes that do not start will indicate that they have not started correctly. If you experience these symptoms, change the tcp_conn_req_max_q and tcp_conn_req_max_q0 default values, using the ndd command.

NOTE:  To avoid losing the new settings when the machine is rebooted, add them to /etc/init.d.

To change TCP values

  1. Log in as root.
  2. Issue the ndd command:

    NOTE:  The responses are noted in bold.

    ndd /dev/tcp

    name to get/set ? tcp_conn_req_max_q

    value ? 1024

    name to get/set ? tcp_conn_req_max_q0

    value? 4096

  3. Add the following lines to the /etc/system file, using any text editor such as vi:

    set tcp:tcp_conn_req_max_q = 1024

    set tcp:tcp_conn_req_max_q0 = 4096

  4. To make sure that the above parameters are automatically set, when the machine is rebooted, enter these commands in a script that will be executed every time that the machine is rebooted. To do this, use the following steps:
    1. Log in as a superuser.
    2. Create a script that will be executed each time the system is rebooted.
    3. Add the script to the /etc/init.d directory, as follows:

    #cp script /etc/init.d

    #chmod 0744 /etc/init.d/script

    #chown root:sys /etc/init.d/script

    1. Create links to the rc2.d directory.

    #cd /etc/init.d

    #ln script /etc/rc2.d/Snnscriptdefinition


    nn is a number.

    scriptdefinition is the name you appended to the file name to define what it is doing.

    For example, if the system finds a file called S23tcpparams during system startup, it will execute that file once, after executing any files that have a lower number in their name.

    1. Verify that the script has links in the specified directories:

    #ls /etc/init.d/ /etc/rc2.d/

    For more details on how to set up Run Control scripts, see the Sun Microsystems site:

  5. Restart the Siebel Server as the Siebel install owner.
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