| Siebel Performance Tuning Guide > Tuning Operating Systems for Performance > Tuning Siebel Business Applications for Oracle Solaris > Tuning Siebel Application Object Manager Instances for Oracle Solaris
 This topic is part of Tuning Siebel Business Applications for Oracle Solaris. Oracle Solaris computers running more than 50 Siebel Application Object Manager instances (multithreaded processes for Siebel Application Object Manager) might 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, then change the tcp_conn_req_max_q and tcp_conn_req_max_q0 default values, using the ndd command.  To change TCP values 
Log in as root.
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? 4096Add the following lines to the /etc/systemfile, using any text editor such as vi:set tcp:tcp_conn_req_max_q = 1024 set tcp:tcp_conn_req_max_q0 = 4096Save your changes and exit the editor.
 
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