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[las_users] LAS: Java Servlet Error



Dear All,
I sent one email yesterday reporting some error I am getting in LAS, which
I could not understand. I am re-sending it again, hoping someone can
understand this LAS error and help me a little bit to go ahead.

I am sorry this is a lengthy email, but please read it.

1) When I try to access the data in the web from the LAS, I get the
following error. Did anyone experience this type of error before? If so,
can someone please explain me what is this error and how can I fix it?
I don't have any experience in Java also.

The only thing I understood is some "java Servlet Connection" is lost. How
can I debug which connection is lost and how can I bring back that
connection to normal? I would be much glad if someone can help me in this.
------------------------------------------------
LAS server error
The following error occurred:

javax.servlet.ServletException: Connection refused
        at gov.noaa.pmel.tmap.FormFilter.doFilter(FormFilter.java:95)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at gov.noaa.pmel.tmap.SessionFilter.doFilter(SessionFilter.java:245)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at
gov.noaa.pmel.tmap.ExceptionFilter.doFilter(ExceptionFilter.java:24)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
        at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
        at java.lang.Thread.run(Thread.java:534)

Root cause of servlet exception was:

javax.servlet.ServletException: Connection refused
        at gov.noaa.pmel.tmap.TemplateServlet.error(TemplateServlet.java:123)
        at
org.apache.velocity.servlet.VelocityServlet.doRequest(VelocityServlet.java:363)
        at
org.apache.velocity.servlet.VelocityServlet.doGet(VelocityServlet.java:294)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
-------------------------------------------------------------------

2) For the above error I just got one reply as follows:

> My guess is that you have multiple copies of the tomcat servlet
> container running (all using the same port).
>
> Look at your process list with (ps -ef or ps -auxww) and kill off all
> the servlet containers you see running.  Then restart the LAS that you
> would like to use.  Verify it's running with 'ps' and then try to
> connect to it.
>
> Roland
>

I could not find any processes with multiple java running in the system.
Please see what I am getting.

[root@maud las]# ps -ef |grep java
root      1038     1  0 10:40 ?        00:00:04
/usr/java/j2sdk1.4.2/bin/java -D
cshaji    1503  1460  0 10:42 ?        00:00:01 java_vm

---------------------------------------------
[root@maud las]# ps -ef
UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 10:39 ?        00:00:04 init
root         2     1  0 10:39 ?        00:00:00 [keventd]
root         3     1  0 10:39 ?        00:00:00 [ksoftirqd_CPU0]
root         4     1  0 10:39 ?        00:00:00 [ksoftirqd_CPU1]
root         5     1  0 10:39 ?        00:00:00 [kswapd]
root         6     1  0 10:39 ?        00:00:00 [kscand/DMA]
root         7     1  0 10:39 ?        00:00:00 [kscand/Normal]
root         8     1  0 10:39 ?        00:00:00 [kscand/HighMem]
root         9     1  0 10:39 ?        00:00:00 [bdflush]
root        10     1  0 10:39 ?        00:00:00 [kupdated]
root        11     1  0 10:39 ?        00:00:00 [mdrecoveryd]
root        17     1  0 10:39 ?        00:00:00 [aacraid]
root        18     1  0 10:39 ?        00:00:00 [scsi_eh_0]
root        23     1  0 10:39 ?        00:00:00 [kjournald]
root        77     1  0 10:39 ?        00:00:00 [khubd]
root       404     1  0 10:39 ?        00:00:00 [knodemgrd]
root       716     1  0 10:40 ?        00:00:00 syslogd -m 0
root       720     1  0 10:40 ?        00:00:00 klogd -x
rpc        737     1  0 10:40 ?        00:00:00 portmap
rpcuser    756     1  0 10:40 ?        00:00:00 rpc.statd
root       864     1  0 10:40 ?        00:00:00 /usr/sbin/sshd
root       880     1  0 10:40 ?        00:00:00 xinetd -stayalive -pidfile
/var/run/xinetd.pid
root       889     1  0 10:40 ?        00:00:00 cupsd
root       942     1  0 10:40 ?        00:00:00 /bin/sh
/usr/bin/safe_mysqld --defaults-file=/etc/my.cnf
mysql      974   942  0 10:40 ?        00:00:00 /usr/libexec/mysqld
--defaults-file=/etc/my.cnf --basedir=/usr --datadir=/var/lib/mysql
--user=mysql --pid-firoot       991     1  0 10:40 ?        00:00:00
sendmail: accepting connections
smmsp     1000     1  0 10:40 ?        00:00:00 sendmail: Queue
runner@01:00:00 for /var/spool/clientmqueue
root      1010     1  0 10:40 ?        00:00:01 gpm -t ps/2 -m /dev/mouse
root      1027     1  0 10:40 ?        00:00:00 crond
root      1038     1  0 10:40 ?        00:00:04
/usr/java/j2sdk1.4.2/bin/java
-Djava.endorsed.dirs=/home/las/las_servlet/jakarta/bin:/home/las/las_servlet/jaxfs
      1070     1  0 10:40 ?        00:00:00 xfs -droppriv -daemon
daemon    1088     1  0 10:40 ?        00:00:00 /usr/sbin/atd
root      1112     1  0 10:40 ?        00:00:00 rhnsd --interval 120
root      1127     1  0 10:40 ?        00:00:00
/usr/local/rsi/idl_6.1/bin/bin.linux.x86/lmgrd
root      1128  1127  0 10:40 ?        00:00:00
/usr/local/rsi/idl_6.1/bin/bin.linux.x86/idl_lmgrd -T maud.cims.nyu.edu
9.2 3 --lmgrd_start 440711e1
root      1148     1  0 10:40 tty1     00:00:00 /sbin/mingetty tty1
root      1149     1  0 10:40 tty2     00:00:00 /sbin/mingetty tty2
root      1150     1  0 10:40 tty3     00:00:00 /sbin/mingetty tty3
root      1151     1  0 10:40 tty4     00:00:00 /sbin/mingetty tty4
root      1152     1  0 10:40 tty5     00:00:00 /sbin/mingetty tty5
root      1153     1  0 10:40 tty6     00:00:00 /sbin/mingetty tty6
root      1154     1  0 10:40 ?        00:00:00 /usr/bin/gdm-binary -nodaemon
root      1198  1154  0 10:40 ?        00:00:00 /usr/bin/gdm-binary -nodaemon
root      1199  1198  1 10:40 ?        00:00:30 /usr/X11R6/bin/X :0 -auth
/var/gdm/:0.Xauth
cshaji    1211  1198  0 10:41 ?        00:00:00 -/bin/csh -c
/usr/bin/ssh-agent /etc/X11/xinit/Xclients
cshaji    1302  1211  0 10:41 ?        00:00:00 /usr/bin/gnome-session
cshaji    1303  1302  0 10:41 ?        00:00:00 /usr/bin/ssh-agent
/etc/X11/xinit/Xclients
cshaji    1308     1  0 10:41 ?        00:00:00 /usr/libexec/gconfd-2 9
cshaji    1310     1  0 10:41 ?        00:00:00
/usr/libexec/bonobo-activation-server --ac-activate --ior-output-fd=14
cshaji    1312     1  0 10:41 ?        00:00:01 /usr/bin/metacity
--sm-client-id=default1
cshaji    1315     1  0 10:41 ?        00:00:00 gnome-settings-daemon
--oaf-activate-iid=OAFIID:GNOME_SettingsDaemon --oaf-ior-fd=12
cshaji    1318   880  0 10:41 ?        00:00:00 fam
cshaji    1323     1  0 10:41 ?        00:00:00 esd -terminate -nobeeps
-as 2 -spawnfd 22
cshaji    1327     1  0 10:41 ?        00:00:00 xscreensaver -nosplash
cshaji    1333     1  0 10:41 ?        00:00:01 gnome-panel --sm-client-id
default2
cshaji    1335     1  0 10:41 ?        00:00:01 nautilus
--no-default-window --sm-client-id default3
cshaji    1337     1  0 10:41 ?        00:00:01 magicdev --sm-client-id
default4
cshaji    1340     1  0 10:41 ?        00:00:00 pam-panel-icon
--sm-client-id default0
cshaji    1342     1  0 10:41 ?        00:00:10 /usr/bin/python
/usr/bin/rhn-applet-gui --sm-client-id default5
root      1343  1340  0 10:41 ?        00:00:00 /sbin/pam_timestamp_check
-d root
cshaji    1350     1  0 10:41 ?        00:00:02 /usr/bin/gnome-terminal
cshaji    1351  1350  0 10:41 pts/0    00:00:00 -sh
cshaji    1390  1350  0 10:41 pts/1    00:00:00 -sh
root      1429  1390  0 10:41 pts/1    00:00:00 su
root      1432  1429  0 10:41 pts/1    00:00:00 bash
cshaji    1460     1  1 10:42 ?        00:00:25
/usr/lib/mozilla-1.0.2/mozilla-bin
cshaji    1503  1460  0 10:42 ?        00:00:01 java_vm
root      1625  1432  0 11:18 pts/1    00:00:00 ps -ef
----------------------------------------------
I would hiappreciate some suggestions to gix this error.


Thanks in advance,

C. Shaji.









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