----------------------------------------------------------------
BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
WHEN YOU POST, include all relevant version numbers, log files,
and configuration files. Don't make us guess your problem!!!
----------------------------------------------------------------
Hello,
I'm having a strange problem. Already read the FAQ (there are
several items that resemble my problem, already tried most of the
solutions) but I think that this one is a little bit tricky.
I'm using:
-Sun Ultra E250, 512Mb RAM, 10Gb disc, Solaris 2.7
-Apache 1.3.6, with openssl 0.9.4 (I don't remember the version of
mod_ssl)
-Jserv 1.0 (manual mode)
-JDK Native 1.1.7 (Sun Package)
-JSDK 2.0
-DB2 Client (DB2 6.0 enterprise server is on another machine)
The machine is used only to serve servlets. The upload is 0.02
average. The configuration is up and running for 1,5 years, with one or
another problem from time to time (mostly programers' mistakes). But now
(another project is online), several problems are happening.
I had only one servlet zone, and now I have another two. JServ is
failing several times a day. I can't tell what servlet is generating the
error, because sometimes a servlet works, and sometimes it does not.
When I kill -15 the hava process, things get back to normal for a time.
Looks to me that the error has something to do with JServ, or the way
the programers are doing their servlets (they are using IBM VisualAge
Enterprise, same environment as the first project).
JServ sometimes is able to be up for hours, and sometimes it keep
going down every 15 minutes.
My log files (jserv.log) have almost all error messages in the
FAQ :). JServ stops working sometimes with core dump, sometimes with
"ajp11: cannot scan servlet headers", sometimes with "ajp11: connection
fail". I got OutOfMemory Exception, got DB2 Driver Exceptions...
As JServ is run in manual mode, I'm able to see what happens when a
core is dumped, but the messages are not helping much.
Data:Thu Jun 8 16:30:26 EST 2000
SIGILL 4* illegal instruction
si_signo [4]: SIGILL 4* illegal instruction
si_errno [0]: Error 0
si_code [1]: ILL_ILLOPC [addr: 0xfd2b7dc8]
stackbase=FFBEF948, stackpointer=FFBEE80C
Full thread dump:
"Thread-4" (TID:0xfd279878, sys_thread_t:0x154318, state:CW,
thread_t:
t@9, sp:0xfed20e48 threadID:0xfed21dc8, stack_base:0xfed21d5c,
stack_size:0x20000) prio=5
org.apache.jserv.JServServletManager.run(Compiled Code)
java.lang.Thread.run(Compiled Code)
"Thread-3" (TID:0xfd275700, sys_thread_t:0x154288, state:CW,
thread_t:
t@8, sp:0xfed50e48 threadID:0xfed51dc8, stack_base:0xfed51d5c,
stack_size:0x20000) prio=5
org.apache.jserv.JServServletManager.run(Compiled Code)
java.lang.Thread.run(Compiled Code)
"Thread-2" (TID:0xfd271330, sys_thread_t:0x153d00, state:CW,
thread_t:
t@6, sp:0xfed80de8 threadID:0xfed81dc8, stack_base:0xfed81d5c,
stack_size:0x20000) prio=5
org.apache.jserv.JServServletManager.run(Compiled Code)
java.lang.Thread.run(Compiled Code)
"SIGQUIT handler" (TID:0xfd2662a0, sys_thread_t:0x7f568, state:R,
thread_t: t@5, sp:0xfeec1b40 threadID:0xfeec1dc8, stack_base:0xfeec1d5c,
stack_size:0x20000) prio=0
"Finalizer thread" (TID:0xfd266088, sys_thread_t:0x7f4d8, state:CW,
thread_t: t@4, sp:0xfeef1a80 threadID:0xfeef1dc8, stack_base:0xfeef1d5c,
stack_size:0x20000) prio=1
"main" (TID:0xfd2660b0, sys_thread_t:0x7eee8, state:R, thread_t:
t@1,
sp:0xffbef4f0 threadID:0x20a18, stack_base:0xffbef948,
stack_size:0x800000)
prio=5 *current thread*
java.net.PlainSocketImpl.accept(Compiled Code)
Abort - core dumped
I had several of these, and they sometimes complains about DB2, like
Full thread dump:
"Thread-284" (TID:0xfd2b3fd8, sys_thread_t:0x70d918, state:R,
thread_t: t@28
9, sp:0xfe3f1d68 threadID:0xfe3f1dc8, stack_base:0xfe3f1d5c,
stack_size:0x20000)
prio=5 *current thread*
COM.ibm.db2.jdbc.app.DB2Connection.<init>(Compiled Code)
COM.ibm.db2.jdbc.app.DB2Driver.connect(Compiled Code)
java.sql.DriverManager.getConnection(Compiled Code)
com.ibm.ivj.eab.dab.DatastoreJDBC.connect(Compiled Code)
...
Registered Monitor Dump:
Verifier lock: <unowned>
PCMap lock: <unowned>
Thread queue lock: <unowned>
Name and type hash table lock: <unowned>
String intern lock: <unowned>
JNI pinning lock: <unowned>
JNI global reference lock: <unowned>
BinClass lock: <unowned>
Class loading lock: <unowned>
Java stack lock: <unowned>
Code rewrite lock: <unowned>
Heap lock: <unowned>
Has finalization queue lock: <unowned>
Finalize me queue lock: <unowned>
Waiting to be notified:
"Finalizer thread" (0x8bb98)
Monitor registry: owner "Thread-284" (0x70d918, 1 entry)
Abort - core dumped
Well, until now, I put a program to monitor JServ (to put it up in
case it stop working), tried to increase the HEAP space of JDK, enabled
servlet trace, disabled servlet trace, did a program-by-program test
with the System's Analist, but I didn't have a clue of what is going on.
Most of this because sometimes I get error, and sometimes don't.
I think that maybe some problem with pointers or garbage collection.
Maybe if I upgrade to JServ 1.1.1 ?
I don't know if this is enough for you to get the picture. I don't
want to send a very long email, so I'll leave the config files out of
this message. If they are needed, let me know, I'll send them.
Thanks a lot, sorry for my bad english.
See ya,
Fabio.
---
State University Of Campinas
[EMAIL PROTECTED]
[EMAIL PROTECTED]
--
--------------------------------------------------------------
Please read the FAQ! <http://java.apache.org/faq/>
To subscribe: [EMAIL PROTECTED]
To unsubscribe: [EMAIL PROTECTED]
Archives and Other: <http://java.apache.org/main/mail.html>
Problems?: [EMAIL PROTECTED]
