求教 apache与weblogic连接 日志报错原因和解决办法

Question

apache 2.0.59 服务：error_20101009.log
weblogic 版本：9.2

[Sat Oct 09 17:48:54 2010] [error] PROTOCOL_ERROR [line 842 of ../nsapi/URL.cpp]: Backend Server not responding
[Sat Oct 09 17:48:57 2010] [error] PROTOCOL_ERROR [line 842 of ../nsapi/URL.cpp]: Backend Server not responding
[Sat Oct 09 17:48:57 2010] [error] PROTOCOL_ERROR [line 842 of ../nsapi/URL.cpp]: Backend Server not responding
[Sat Oct 09 17:48:57 2010] [error] PROTOCOL_ERROR [line 842 of ../nsapi/URL.cpp]: Backend Server not responding
[Sat Oct 09 17:48:57 2010] [error] PROTOCOL_ERROR [line 842 of ../nsapi/URL.cpp]: Backend Server not responding
[Sat Oct 09 17:48:57 2010] [error] PROTOCOL_ERROR [line 842 of ../nsapi/URL.cpp]: Backend Server not responding

[Sat Oct 09 11:55:55 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:55:55 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:55:56 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:55:59 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:56:01 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:56:03 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:56:06 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:56:09 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:56:14 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201
[Sat Oct 09 11:56:15 2010] [error] CONNECTION_REFUSED [os error=0, line 1730 of ../nsapi/URL.cpp]: Error connecting to host 192.168.165.31:7201

以前用着没有问题，也没有修改
apache 和weblogic 是一对一的，目前应用没有受到影响还能够使用，不过感觉有点儿慢
那位高人帮忙解决下