Problem in starting java web server 2.0

I have java webserver2.0. When i tried to start it manually by typing httpd command on command line.It gives me some error of memory(some hexa codes and the message "could not 'write' & some hexa codes again"). Then i tried to start it by givig jservsvc.exe which gave same problem. This problem persists on both o.s Win 2000 and win 98.
Please help me on that.
Thank You

i dont know that this will work but try it
search "httpd.exe" or bat file in ur javweserver2.0 folder
and direclty double click it
or check wether its already running as a service

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Starting java web server

i am new to java servlets. i have installed java wev server2.0 on windows 98. i am unable to start it. please someone give me the process to start it.
your help would be very much appreciated.
thank you

I have installed java web server on windows 2000 server machine. I am using the following command to start the server
<server_root>\bin>httpd
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Problem in starting the web-server after configuring .so on AIX

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I got similar errors in the past when the web server process was running in the background. Sometimes shutting down WAS does not work.
Before you start WAS ensure that no java process is running or better try rebooting.

Problem installing Sun Java Web Server

Hi
I'm trying to install Sun Identity Server which need Sun Java Web Server...
I try to install identity server and web server using Sun Java Enterprise System Install Wizard...
When I came to page Identity Server:Sun Java System Web Server (3 of 6 ) and I entered Hostname, dir1.usmnet, I get an error pop-up window stating Host Name is not valid......but if I typed dir1.domain.com the error message didn' t appear.....
I'm using Solaris 9 on Intel platform. I have setup my network and able to ping to other valid hostname in my LAN....
FYI my network information are as follows
/etc/hosts
127.0.0.1 localhost
<my ip > dir dir.usmnet loghost
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/etc/resolv.conf
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search usmnet
I have also setup /etc/netmasks and /etc/defaultrouter
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What when wrong, I could ping to my dns server and to other computer in this LAN, could anybody give a suggestion ?

OK, found the solution by myself.
The Administrator's Guide mentiones the possibility to install a certificate with the wadm CLI, so I tried that:
wadm> install-cert -v --config=www -y server -n Server-Cert /www.crt
Please enter token-pin>
ADMIN4086: The Certificate could not be installedThe CLI Reference Manual says for the command install-cert, option --replace*:
"Note --replace option of install-cert CLI is deprecated
and currently using this option may not work as expected.
For replacing a CA-signed certificate, users should delete the
cert using delete-cert CLI and then install the new one
using install-cert CLI."
wadm> install-cert -v --config=www -y server -n Server-Cert --replace /www.crt
Please enter token-pin>
ADMIN4112: No Private key foundOK, so maybe if I had installed the first certificate (before generating the new CSR) that would have worked, I don't know.
Deleting the old cert doesn't work at once:
wadm> delete-cert -v --config=www Server-Cert
Please enter token-pin>
ADMIN4139: Certificate Server-Cert is being referred to by listeners: http-listener-2So before deleting you have to remove the certificate from the listener. Then:
wadm> delete-cert -v --config=www Server-Cert
Please enter token-pin>
CLI201 Command 'delete-cert' ran successfully
wadm> install-cert -v --config=www -y server -n Server-Cert /www.crt
Please enter token-pin>
CLI201 Command 'install-cert' ran successfullyAfter re-adding the certificate to the ssl listener and deploying all the changes to the servers
everything is fine.
F.D.

Problem running servletsin java web server

After i compile my servlets and copy the class file in the servlets folder of the web server, i run the server by the
URL http://localhost:8080.
The server page of congratulations message is displayed.after that i give the URL
http://localhost/servlets/servletname
the following error is displayed.
not found error(404)
The file that you requested could not be found on this server.If you provided the URL,please notify the administrator of that server of this error.

You forgot to put the port number in your URL. Try http://localhost:8080/servlets/servletname.

Problem i starting Apache web server

# service httpd start
Got message like :--------------------------
Redirecting to /bin/systemctl start httpd.service
Job for httpd.service failed. See 'systemctl status httpd.service' and 'journalctl -xn' for details.
on checkig log file :: -----------------------------------------------i found this.
# journalctl -xn
-- Logs begin at Sun 2013-01-27 20:38:14 IST, end at Mon 2013-01-28 13:57:43 IST. --
Jan 28 13:56:50 nitk.admin systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
Jan 28 13:56:50 nitk.admin httpd[26019]: AH00548: NameVirtualHost has no effect and will be removed in the next release /etc/httpd/conf.d/aeolus-conductor.con
Jan 28 13:56:50 nitk.admin httpd[26019]: httpd (no pid file) not running
Jan 28 13:56:50 nitk.admin systemd[1]: Failed to start The Apache HTTP Server.
-- Subject: Unit httpd.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/li … temd-devel
-- Documentation: http://www.freedesktop.org/wiki/Softwar … e9d022f03d
-- Unit httpd.service has failed.
-- The result is failed.
Jan 28 13:56:50 nitk.admin systemd[1]: Unit httpd.service entered failed state
Jan 28 13:57:43 nitk.admin nova-compute[1318]: 2013-01-28 13:57:43 1318 AUDIT nova.compute.resource_tracker [-] Free ram (MB): 3377
Jan 28 13:57:43 nitk.admin nova-compute[1318]: 2013-01-28 13:57:43 1318 AUDIT nova.compute.resource_tracker [-] Free disk (GB): 49
Jan 28 13:57:43 nitk.admin nova-compute[1318]: 2013-01-28 13:57:43 1318 AUDIT nova.compute.resource_tracker [-] Free VCPUS: 8
Jan 28 13:57:43 nitk.admin nova-compute[1318]: 2013-01-28 13:57:43 1318 INFO nova.compute.resource_tracker [-] Compute_service record updated for nitk.admin
Jan 28 13:57:43 nitk.admin nova-compute[1318]: 2013-01-28 13:57:43 1318 INFO nova.compute.manager [-] Updating host status
(END)
Can anyone help me to decide, where is the problem???????????
content of the file ; /usr/lib/systemd/system/httpd.service
[Unit]
Description=The Apache HTTP Server
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=notify
PIDFile=/var/run/httpd/httpd.pid
EnvironmentFile=/etc/sysconfig/httpd
ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND
ExecReload=/usr/sbin/httpd $OPTIONS -k graceful
ExecStop=/usr/sbin/httpd $OPTIONS -k graceful-stop
PrivateTmp=true
[Install]
WantedBy=multi-user.target
Last edited by hunter.ashish (2013-01-28 08:32:52)

Could you check if you have this directory? (It can be empty):
/var/run/httpd
permissions should be root:root, mod:755

Java Web Server 2.0 is not started

Error message while starting the java web server 2.0
C:\Documents and Settings\Admin>httpd
Program C:\JAVAWE~1.0\bin\..\jre\bin\jre.exe exited with code -1073741674
C:\JAVAWE~1.0\bin\..\bin\jserv.exe
C:\JAVAWE~1.0\bin\..\bin\jserv.exe
jserv: Shutting down the server
Program C:\JAVAWE~1.0\bin\..\jre\bin\jre.exe exited with code -1073741674
C:\JAVAWE~1.0\bin\..\bin\jserv.exe
C:\JAVAWE~1.0\bin\..\bin\jserv.exe
please give the solution for this problem

Error message while starting the java web server 2.0..
please give the solution for this problemI do not know. However, I can tell you it is best
to look on the foruum most closely related to jserv,
& a quick search suggests that would be either..
http://forum.java.sun.com/forum.jspa?forumID=45
..or..
http://forum.java.sun.com/forum.jspa?forumID=33
This forum has nothing to do with those server-side
technologies (don't let the name 'web-start' fool you).

Problem of DNS in Java Web Server

Hi!
I have problem, I have written servlets but when I run them using Java Web Server Exception arrises that DNS could not resolved however when I run the same code as application it gives correct results without exception. I am using the Java Web Server 2.0

why r u using JWS? Sun has declared End of Life of JWS.
why don't you use any other app server (like Tomcat ...etc)

Problem running XSQLSERVLET on JAVA WEB SERVER

THE BELOW LISTED SIMPLE XSQL QUERY WHEN RUN ON JAVA WEB SERVER 2 (WITH CLASSPATH/MAPPING SETTING AS IN INSTALLATION MANUAL) GIVES FOLLOWING ERROR:
1. XML document must have a top level element.
<?xml version="1.0" encoding="UTF-8"?>
<xsql:query xmlns:xsql="urn:oracle-xsql" connection="demo">
SELECT 'Hello World' AS "GREETING" FROM DUAL
</xsql:query>
2. WHILE RUNNING INDEX.HTML FILE FROM JAVA WEB SERVER 2 IT GIVES FOLLOWING ERROR
Oracle XSQL Servlet Page Processor 1.0.4.3 (Production)
XSQL-017: Unexpected Error Occurred
java.lang.IllegalArgumentException: sun.io.ByteToCharUTF-8
at sun.io.ByteToCharConverter.getConverterClass(ByteToCharConverter.java:79)
at sun.io.ByteToCharConverter.getConverter(ByteToCharConverter.java:109)
at java.lang.String.(String.java:294)
at java.lang.String.(String.java:313)
at oracle.xml.xsql.XSQLUtil.XL(XSQLUtil.java:207)
at oracle.xml.xsql.XSQLServletPageRequest.getParameter(XSQLServletPageRequest.java:139)
at oracle.xml.xsql.XSQLActionHandlerImpl.variableValue(Compiled Code)
at oracle.xml.xsql.XSQLActionHandlerImpl.getAttributeAllowingParam(Compiled Code)
at oracle.xml.xsql.actions.XSQLIncludeXSQLHandler.init(XSQLIncludeXSQLHandler.java:46)
at oracle.xml.xsql.XSQLDocHandler.handlerForAction(XSQLDocHandler.java:283)
at oracle.xml.xsql.XSQLDocHandler.getDocument(Compiled Code)
at oracle.xml.xsql.XSQLPageProcessor.process(Compiled Code)
at oracle.xml.xsql.XSQLServlet.doGet(XSQLServlet.java:60)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:715)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at com.sun.server.ServletState.callService(Compiled Code)
at com.sun.server.ServletManager.callServletService(Compiled Code)
at com.sun.server.ProcessingState.invokeTargetServlet(ProcessingState.java:423)
at com.sun.server.http.HttpProcessingState.execute(HttpProcessingState.java:79)
at com.sun.server.http.stages.Runner.process(Runner.java:79)
at com.sun.server.ProcessingSupport.process(Compiled Code)
at com.sun.server.Service.process(Service.java:204)
at com.sun.server.http.HttpServiceHandler.handleRequest(HttpServiceHandler.java:374)
at com.sun.server.http.HttpServiceHandler.handleRequest(Compiled Code)
at com.sun.server.HandlerThread.run(Compiled Code)
null

What jdk are you using ?
I had this problem with 1.1.7

JAVA WEB SERVER Problem

Hai,
I am using Java Web Server 1.2 . In JSP , when I use
ResultSet.previous(), it is saying that :
java.sql.ResultSet.previous() command not found. I do not know what to do ?
But, In java file, it is working fine without any problem .But, I need to implement in JSP only.
When I use the bean, which consists Rs.previous() also it says Resultset.previous() Command Not found It is very very urgent to me.
Pl help me.
Thanks & Regards

S,
1. Yes, you're rigth. Something is missing here.
2. If it works for Java App and not in JSP,
that would mean JAVA see your jdbc driver and not JSP
but then how come JSP can use Connection ???
3. I think we need some expert to clarify about setup on your machine. Some thing is not set up well so that JAVA app and JSP see at the same time. It look like only JAVA app see the whole.
4. Can you post your article in JDBC forum also in waiting?
-- Paul.

Unable to start sun java web server 6.1 SP4

Hi,
I have recently installed sun java web server 6.1 SP4 on solaris 10. The directory structure it created was completely different from the one mentioned in the documentation. I could not find the https-adminserv directory under the web server root directory. Instead the closest directory was bin/https/httpadmin/bin directory. On executing ./start it gave an error
ld.so.1: start: fatal: libssl3.so: open failed: No such file or directory
Killed
Any help is welcome. Thanks.
I had not installed the webserver in the standard location /opt/SUNWwbsrvr but in /BCP partition.

also, you can do something like
cd https-admserv
sh -x start
this will show as to what is the current LD_LIBRARY_PATH is pointing to and why ssl3.so is not getting loaded.
if you don't see
https-* under web server install root directory, then something wrong with your installation as well.
yes, if u stand alone version of web server, then you shouldn't run into any dependencies issue. u can also get 6.1 sp6 version from web - http://www.sun.com/webserver

Oracle.xml.xsql.XSQLServlet in Java Web Server 2.0

Does anyone know how to add the oracle.xml.xsql.XSQLServlet in the Java Web Srever 2.0? When running the helloworld.xsql I am now getting the following error message.
"500 Internal Server Error
The servlet named oracle.xml.xsql.XSQLServlet at the requested URL
http://nw601250:8080/xsql/demo/helloworld.xsql
reported this exception: java.security.AccessControlException: access denied (java.io.FilePermission C:\JavaWebServer2.0\public_html\xsql\demo\helloworld.xsql read). Please report this to the administrator of the web server.
java.lang.RuntimeException: java.security.AccessControlException: access denied (java.io.FilePermission C:\JavaWebServer2.0\public_html\xsql\demo\helloworld.xsql read) at oracle.xml.xsql.XSQLPageManager.getPage(XSQLPageManager.java:122) at oracle.xml.xsql.XSQLPageProcessor.process(XSQLPageProcessor.java, Compiled Code) at oracle.xml.xsql.XSQLServlet.doGet(XSQLServlet.java:124) at javax.servlet.http.HttpServlet.service(HttpServlet.java:715) at javax.servlet.http.HttpServlet.service(HttpServlet.java:840) at com.sun.server.ServletState.callService(ServletState.java:226) at com.sun.server.ServletManager.callServletService(ServletManager.java:936) at com.sun.server.ProcessingState.invokeTargetServlet(ProcessingState.java:423) at com.sun.server.http.HttpProcessingState.execute(HttpProcessingState.java:79) at com.sun.server.http.stages.Runner.process(Runner.java:79) at com.sun.server.ProcessingSupport.process(ProcessingSupport.java, Compiled Code) at com.sun.server.Service.process(Service.java:204) at com.sun.server.http.HttpServiceHandler.handleRequest(HttpServiceHandler.java:374) at com.sun.server.http.HttpServiceHandler.handleRequest(HttpServiceHandler.java:166) at com.sun.server.HandlerThread.run(HandlerThread.java:162)"
I have the alias *.xsql set to map to the servlet named oracle.xml.xsql.XSQLServlet under the Servlet Aliases section, but I'm not sure how to add the servlet under the Servlet section, as I'm guessing that this is the problem I'm now experiencing. I tried adding oracle.xml.xsql.XSQLServlet as both the servlet name and class, but this is not working.
Any help would be greatly appreciated. Thanks!

Rani,
The following is part of a message that was posted back on Nov. 7 of '99 from Steve Muench. I just followed this exactly with the Java Web Server 1.0.1 and it worked fine (including adding the classpath settings and xsql servlet mappings as it says below). Thanks,Dan
Here's the steps I just followed to run all the XSQL Demos under JSWDK 1.0.1
(1) Downloaded jswdk1_0_1-win.zip from Sun
(2) Installed in D:\jswdk-1.0.1
(3) Edited "startserver.bat" to add the
classpath entries needed by XSQL Servlet:
set CLASSPATH=%CLASSPATH%;d:\xsql\lib
set CLASSPATH=%CLASSPATH%;d:\xsql\lib\classes111.zip
set CLASSPATH=%CLASSPATH%;d:\xsql\lib\oraclexsql.jar
set CLASSPATH=%CLASSPATH%;d:\xsql\lib\oraclexmlsql.jar
set CLASSPATH=%CLASSPATH%;d:\xsql\lib\xmlparserv2.jar
(4)Edited d:/jswdk-1.0.1/webpages/WEB-INF/servlets.properties and added the line:
xsql.code=oracle.xml.xsql.XSQLServlet
(5) Edited d:/jswdk-1.0.1/webpages/WEB-INF/mappings.properties
and added the line:
.xsql=xsql
(6) Copied D:\xsql\demo to D:/jswdk-1.0.1/webpages/xsql/demo
(7) Started the Webserver with "startserver.bat"
(8) Browsed http://localhost:8080/xsql/demo/index.html
(9) Exercised all the demos.
Hope this helps.
Steve Muench
Oracle XML Team

Secure service in Java Web server 2.0

Hi all, I have installed a Java Web Server 2.0 without the secure service running, and everything works just fine.
Then I make a self-signed certificate with authstore, using key size 1024, MD5withRSA, hostname: <my computer> (testing on local net (maybe this is what fails?)), and all the other stuff. All looks good and certificate info looks like this:
Subject Information: CN=yodopc1, OU=SW dept, O=Yodoba, L=Z?rich, ST=Z?ric, C=CH
Issuer Information: CN=yodopc1, OU=SW dept, O=Yodoba, L=Z?rich, ST=Z?ric, C=CH
Dates Valid: Thu Jun 28 10:19:35 CEST 2001 --> Wed Sep 26 10:19:35 CEST 2001
Algorithm: MD5withRSA
Serial Number: 993716375
Then I exit, and restart (even tried rebooting machine).
Start webserver, type inn key password, and login to the Server admin applet. There it says:
Service -------------- Status ------ Port -- Network Address
Java web server ------ Terminated - -------
- Web service -------- Unknown --- 80 ----
- Secure Web service - Unknown --- 7070 --
If I try to start the server, it runs for about ten seconds before it is back to the same state again. Of course trying to access server through http(s)://localhost(:7070) results in a "Cannot find server..." If I delete the keys file in <JWS-root>, everything is back to where it was before I started creating the certificate.
I have seen that there are a lot of old (1-2 years old) Posts with similar and perhaps related issues, but none of witch have any replies that finds a solution. Hopefully someone can help my now...
All help and suggestion are Greatly appriciated.
Sjur

Hi Sjurba,
Please follow this URL:
http://www.sun.com/software/jwebserver/faq/faq.html#f6
http://docs.iplanet.com/docs/manuals/messaging/sims35/install/postwa.doc6.html
Also read the below.
Client side workaround: Use Netscape Communicator 4.x instead of Netscape Navigator 3.x.
Java Web Server workaround: Use the VeriSign root certificate that is shipped in Java Web Server 1.1. Follow these instructions:
1.Copy or save the file named keys, located in the top level directory of your Java Web Server installation, to a secure place (for example, a floppy disk).
2.Locate the secure server certificate that VeriSign sent you.
3.Install Java Web Server 1.1 in a temporary directory. You don't need to run this server--you only need to run AuthStore to regenerate the keys file. (The install of
Java Web Server 1.1 does need not be on the same machine as the install of the Java Web Server 1.1.x that has the problem).
For the remainder of these instructions, 1.1.x server root is the installation directory of the Java Web Server 1.1.x that shows the problem. 1.1 server root is the
installation directory of Java Web Server 1.1
4.Copy the keys file from 1.1.x server root/ to 1.1 server root/.
5.Run AuthStore under 1.1 server root. AuthStore is in the bin directory. You will need to type in the server passphrase to launch AuthStore.
6.From the scrolling list, select the key that corresponds to the secure server certificate from VeriSign.
7.Click Import and type the full path of the certificate that you received from VeriSign.
8.Click Save to write a new keys file under 1.1 server root.
9.Click Exit.
10.Copy the new keys file from 1.1 server root/ to 1.1.x server root/.
11.Restart the Java Web Server 1.1.x under 1.1.x server root.
I hope this will help you.
Thanks
Bakrudeen
Technical Support Engineer
Sun MicroSystems Inc, India

Sun Java Web Server 6.1SP4 deadlock, stops responding

Hi, i have a java web app on a Java Web SErver 6.1SP4 and when there are a lot of users the web server hangs, it stops responing. After a while (from 2 to 15 minutes) it start responding again. This serves neither dinamic nor static content. CPU usage is 100%. Just stoping and restarting the web server instance it works properly (even with the same or greater number of clients).
Reading many posts some one wrote to use pstack to see whats happening. I did it, but i can't interpret results (i think there is a deadlock but don't know if thats true and how to resolve it).
Any hint will be appreciated
There are a lot of blocks like this:
----------------- lwp# 3468 / thread# 3468 --------------------
fe11f950 lwp_mutex_lock (918c18)
fd692384 __1cNObjectMonitorGenter26MpnGThread__v_ (5000, 525c, 5000, 50dc, 4800, 4af0) + 2d8
fd6324d4 __1cSObjectSynchronizerKfast_enter6FnGHandle_pnJBasicLock_pnGThread__v_ (e104f604, e104f77c, 831ff50, 0, 35d654, fd6328ec) + 68
fd632954 __1cQinstanceRefKlassZacquire_pending_list_lock6FpnJBasicLock__v_ (e104f77c, fd970000, e7330000, 4491d4, fd61bc2c, 0) + 78
fd63167c __1cPVM_GC_OperationNdoit_prologue6M_i_ (e104f764, 4400, fd970000, 2cdc0, 4a6268, 1) + 38
fd62e0b0 __1cIVMThreadHexecute6FpnMVM_Operation__v_ (e104f764, 80e9b0, 0, 0, 1, 0) + 90
fd52c2a4 __1cbCTwoGenerationCollectorPolicyRmem_allocate_work6MIii_pnIHeapWord__ (2e368, fd9c29ec, fd9c297c, fd931a26, 4800, 4998) + 160
fd522940 __1cNinstanceKlassRallocate_instance6MpnGThread__pnPinstanceOopDesc__ (f3c09020, 831ff50, 81e33e0, 4000, 4178, 0) + 180
fd7b7744 __1cQjava_lang_StringQbasic_create_oop6FpnQtypeArrayOopDesc_ipnGThread__pnHoopDesc__ (f0a5e910, 0, 831ff50, 0, 1, 1) + a8
fd63228c jni_NewStringUTF (831ffe4, 605b9c8, fd587824, 80e9f8, 4800, 4998) + b8
fdafdefc __1cKNSJavaUtilQsetStringElement6FpnHJNIEnv__pnN_jobjectArray_Ipkc_v_ (831ffe4, ace7e4, 2, 605b9c8, 4, 605b828) + 34
fdb068dc __1cONSAPIConnectorOgetRequestInfo6MpnHJNIEnv__pnN_jobjectArray_4pnK_jintArray__v_ (e104fabc, 831ffe4, ace7e4, ace7e0, ace7dc, 4) + 9c
fdb042e4 __1cONSAPIConnectorHservice6MpnRJ2EEVirtualServer__i_ (e104fabc, ea9560, 8, 84b9464, 6d137e0, ace7dc) + 260
fdb02734 service_j2ee (3c1c0, 84b97f0, 84b9868, 0, fdb11d57, 132414) + 40
ff1cf994 __1cNfunc_exec_str6FpnKFuncStruct_pnGpblock_pnHSession_pnHRequest__i_ (668, 3c1c0, 84b97f0, 84b9868, 0, 0) + 248
ff1d0db4 INTobject_execute (77308, 84b97f0, 84b9868, 0, 37ff8, 80d290) + 5e8
ff1d5de4 INTservact_service (84b97f0, 84b9868, ff2e7b58, 0, 0, ff2e7b30) + 4d8
ff1d64f4 INTservact_handle_processed (84b97f0, 84b9868, 20, 2, 605bee0, 76858) + 158
ff218a9c __1cLHttpRequestUUnacceleratedRespond6Mpc_v_ (84b9750, ff2e7b7c, 2f48, 1bb, 84b9868, 84b97f0) + 3c8
ff21818c __1cLHttpRequestNHandleRequest6MpnGnetbuf__i_ (84b9750, 6059290, 605b3f0, 605b3d8, 2000, 60592f0) + 62c
ff216588 __1cNDaemonSessionDrun6M_v_ (84b9348, 2000, ff2ed7bc, 0, 0, ff2ed774) + 17c
ff106dec ThreadMain (84b9348, 84fcef0, 3, 0, 1, 4b8) + 24
fedd0028 ptroot (84fcef0, 0, 0, 0, 20000, fede8d70) + d0
fe165c94 lwpstart (0, 0, 0, 0, 0, 0)

hi
sorry for the delayed response.
well, the problem that you are trying to run into is very common when your server is getting good amount of load and uses large amount of servlet/jsp web applications running.
here is a url that you might find it a useful read
http://java.sun.com/docs/hotspot/gc1.4.2/index.html#4.%20Types%20of%20Collectors|outline
if you do not want to take this trouble reading this document and want a quick solution, you do can do couple of things:
- first understand how to size the heap
http://java.sun.com/docs/hotspot/gc1.4.2/index.html#3.%20Sizing%20the%20Generations|outline
- understand that the system is paused because jvm is busy doing garbage collection before allowing the web server to continue.
- this can be avoided by properly tuning the jvm to how you think the server should behave. unfortunately, there is no miracle one one line to fix this issue
- by careful and decent analysis of your system, you can tune your jvm properly that it can scale very well without any glitches.
though, you will need to take the pain to learn the garbage collection acronyms and see what's best suited for you.
- first, you want to know what is happening inside the jvm before you proceed to optimize . you can do this by adding this option
-verbose:gc -XX:+PrintGCDetails
How to add this option in the server.xml , is by doing something like
start admin server -> manager your server -> click Java tab
-> click on JVM Option in the left side
-> Add this JVM option -verbose:gc -XX:+PrintGCDetails
-> restart the server
-> note, you do NOT want to leave the above option in the production environment as this will tremendously slow your application and this is meant to be only for development purposes.
- if your server is a multi processor server (has more than 1 CPU) and you want less pause time, you can typically try adding this jvm option to your server and restarting it.
-XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled
here are few other short cut , jvm options that you also try in your devleopment environment before going to production.
Server application(Like Web Server 6.1) running alone on a large multi-processor server with 4gb of physical memory.
#java -server -XX:+AggressiveHeap
Two applications running on a large multi-processor server with 4gb of physical memory. Each java application instance is allocated a part of total system memory by an explicit specification of the maximum and minimum heap sizes.
#java -server -XX:+AggressiveHeap -Xms1024m -Xmx1024m
(again, do your research before you use this option in the production environment)

Maximum Open Cursors Exceeded - Oracle 9 & Java Web Server 6.1

We are facing this problem - maximum open cursors exceeded after migrating our application to Sun Java System Web Server 6.1
We were not facing this problem with our earlier web server
Can anybody let us know - is there any setting we need to do to avoid this.
The current setting for this attribute in the database is quite huge - close to 2000
One of the "webservd" sessions, (web server user) exceeded this value

See my reply in your duplicated post:
http://swforum.sun.com/jive/thread.jspa?threadID=57989&messageID=220483#220483

Problem in starting java web server 2.0

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