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I am using Apache/1.3.6 and JServ/1.1 on Solaris 5.7. JServ is serving
a single servlet (Java 1.2.2) which communicates with the client's Applet
and a back-end database (Oracle 8i). This servlet works fine with a small
load but when the load is increased it stops answering requests. There are
no errors from the servlet OR from JServ OR from Apache, there is just no
answer back at all. The usual cuprits are the number of file descriptors (I
have that set at 1024) and the JVM heap size (which I have monitored).
Increasing these values has no effect, so I don't think they are the
problem. What I do notice upon lockup is the following (produced with
netstat -a), this is just one of many such pairs:
localhost.8007 localhost.56665 32768 0 32768 0 CLOSE_WAIT
localhost.56665 localhost.8007 32768 0 32768 0 FIN_WAIT_2
What this looks like to me is a deadlock between jserv and apache. I am at
a loss as to what could cause this. I am wondering if anyone has seen this kind
of problem and might know what else I might check.
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