This topic helps you to solve problems that you might encounter with your proxy server.
ChannelFramew E CHFW0029E: Error initializing chain HTTPS_PROXY_CHAIN because of exception com.ibm.wsspi.channel.framework.exception.RetryableChannelException: Permission denied TCPPort E TCPC0003E: TCP Channel TCP_7 initialization failed. The socket bind failed for host * and port 80. The port may already be in use.Change the ports of the PROXY_HTTP_ADDRESS and PROXY_HTTPS_ADDRESS transport chains to values greater than 1024.
Default value | 0xF0, which sets the wait time to 240 seconds (4 minutes). |
Recommended value | A minimum value of 0x1E, which sets the wait time to 30 seconds. |
Default value | None |
Recommended value | At least decimal 32768. |
echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout
View or set this value by checking the UNIX reference pages on the ulimit command for the syntax of different shells. Set the ulimit command to 65535 for the KornShell shell (ksh), by issuing the ulimit -n 65535 command. Use the ulimit -a command to display the current values for all limitations on system resources.
Default value | 1024 |
Recommended value | 65535 |
/usr/sbin/no -o tcp_timewait =1
Soft FILE Size | -1 |
Soft CPU Time | -1 |
Soft STACK Size | -1 |
Soft CORE File Size | -1 |
Hard FILE Size | -1 |
Hard CPU Time | -1 |
Hard STACK Size | -1 |
Hard CORE File Size | -1 |
Default value | 2000 |
Recommended value | unlimited |
ndd -get /dev/tcp tcp_time_wait_interval ndd -set /dev/tcp tcp_time_wait_interval 30000
Default value | 240000 milliseconds, which is equal to 4 minutes. |
Recommended value | 60000 milliseconds |
View or set this value in the WebSphere Application Server administrative console by clicking Servers > Proxy Servers > server_name > Proxy server transports > HTTP_PROXY_CHAIN/HTTPS_PROXY_CHAIN
Default value | 100 |
Recommended value | A value that represents the maximum number of embedded objects in a Web page + 1. |
View or set this value in the WebSphere Application Server administrative console by clicking Servers > Proxy Servers > server_name > HTTP Proxy Server Settings. In the Content Server Connection section, increase the maximum connections per server field to a value that is equal to or greater than the expected maximum number of connected clients. Save your changes, synchronize the changes to the proxy server node, and restart the proxy server.
Recommended value | Value consistent to the expected concurrent client load. |
Default value | 120 |
Recommended value | A value that represents the acceptable response time from the point of view of the client. |