APACHE错误日志，大家来分析一下

[Tue May 29 11:16:05 2007] [error] PROTOCOL_ERROR [line 793 of ../nsapi/URL.cpp]: Backend Server not responding
[Tue May 29 11:16:05 2007] [error] CONNECTION_REFUSED [os error=0, line 1642 of ../nsapi/URL.cpp]: 10.9.0.1:7001 errno = 0
[Tue May 29 11:16:05 2007] [error] CONNECTION_REFUSED [os error=0, line 1642 of ../nsapi/URL.cpp]: 10.9.0.1:7001 errno = 0
[Tue May 29 11:16:05 2007] [error] CONNECTION_REFUSED [os error=0, line 1642 of ../nsapi/URL.cpp]: 10.9.0.1:7001 errno = 0
[Tue May 29 11:16:05 2007] [error] CONNECTION_REFUSED [os error=0, line 1642 of ../nsapi/URL.cpp]: 10.9.0.1:7001 errno = 0

[Sun Jul 08 00:40:58 2007] [warn] (22)A system call received a parameter that is not valid.: ap_proxy: couldn't create the lock
[Sun Jul 08 00:40:58 2007] [crit] (22)A system call received a parameter that is not valid.: ap_proxy: couldn't release the lock


[Mon Jul 16 10:50:52 2007] [error] (12)There is not enough memory available now.: fork: Unable to fork new process
[Mon Jul 16 10:51:02 2007] [error] (12)There is not enough memory available now.: fork: Unable to fork new process
[Mon Jul 16 10:51:13 2007] [error] (12)There is not enough memory available now.: fork: Unable to fork new process
[Mon Jul 16 10:51:23 2007] [error] (12)There is not enough memory available now.: fork: Unable to fork new process
[Mon Jul 16 10:51:34 2007] [error] (12)There is not enough memory available now.: fork: Unable to fork new process
[Mon Jul 16 10:51:44 2007] [error] (12)There is not enough memory available now.: fork: Unable to fork new process
[Mon Jul 16 10:51:55 2007] [error] (12)There is not enough memory available now.: fork: Unable to fork new process

[Mon Jul 16 11:58:17 2007] [error] WRITE_ERROR_TO_SERVER [os error=0,  line 743 of ../nsapi/URL.cpp]:

[Mon Jul 16 21:04:18 2007] [warn] SSL0222W: SSL Handshake Failed, No ciphers specified.
[Mon Jul 16 21:05:07 2007] [warn] SSL0222W: SSL Handshake Failed, No ciphers specified.
[Mon Jul 16 21:08:57 2007] [warn] SSL0222W: SSL Handshake Failed, No ciphers specified.

应用系统架构：APACHE1.3＋WEBLOGIC

操作系统：AIX

经常出现这样的问题，一段时间就会down，已经增加内存。怀疑是有恶意攻击导致连接数过多，但错误日志好象没有反映出来。

看不懂，关注
不过字面理解
There is not enough memory available now.: fork: Unable to fork new process
是不是内存小，链接多？

换成2.0的work模式试试呢？

查查你的 appache版本  有漏洞吗?