Re: Problem starting TOMCAT on Win 2000
Priya, I think you need to set the path of java in your environment variables. The error system cannot... is generally associated with dos not finding the executable to run the program.so,include the jave home and tomcat home in your PATH variable of your comp.also,i think its mentioned in the tomcat documentation too. regards, shravan On Mon, 11 Jun 2001, Priya Gupta wrote: Hello I dowloaded the Tomcat 3.2.2 and unzipped all the files in a folder: foo\jakarta-tomcat-3.2.2 I set the TOMCAT_HOME variable set TOMCAT_HOME=foo\jakarta-tomcat-3.2.2 and JAVA_HOME=C:\jdk1.2.2 But still when I try startiing Tomcat from command it says The system cannot find the Path specified Also I have copied the tools.jar file in the Path. It would be really nice if someone can help me out of this! Thank you Priya __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/
Tomcat JDBC-ODBC Crashes
Hi there, I am using Tomcat with jdk122 on win 2000.I use MS ACcess and to communicate with that I use the SUn jdbc-odbc bridge.The problem i'm facing off late is that Tomcat crashes even though I close my connecitons with the st.close() and con.close() statements. Are there any better odbc drivers bcos i heard that sun itself doesnt endorse its jdbc-odbc bridge too much.Or am i facing a problem which i do not know? Thanks and Regards, Shravan Education is the ability to listen to almost anything without losing your temper. -- Robert Frost
Re: heavy Traffic will rise Mem usage extremly
Hi Wolle, Even I face the probelm you mentioned regularly.I actually have no idea how to tackle it.I raised it a few weeks back and was suggested to move to JDK122 but even with that I havent been able to tackle this issue. It would be great if anybody here has found a solution to his problem.I have seen memory on my tomcat jvm rising to 29mb for processing of a servlet.but even after the processing it retains the same memory,even though i call System.gc().I dont have a clue. Thanks and Regards, Shravan Education is the ability to listen to almost anything without losing your temper. -- Robert Frost On Sat, 28 Apr 2001, Wolle wrote: Hello, i have testet some Servlets, and i'm prof that I give all the Readers and Writes free, when a error occurs, so my Servlets are mostly memory leak free. So, when I make a big traffic to my servlets, the memory usage of Tomcat will rise extremly, and after that it won't give these memory free.And so the Server will become slow. Is that a error in Tomcat, or must I set some enviroment in the Tomcat server.xml or so ? I have build some extra Commands in the Serverlet to call System.gc() or System.runFinalization(), but no changes will occurse. I have read about the VM that in some VM it's normal that they give not all the memory free. W. Klum told me that you can explzit turn the JIT Compiler of , but how could I do this ? I have test it all with JDK1.3 , JDK1.3.02 (with CLIENT VM , and SERVER VM), on Linux Suse 7.1 and Linux Mandrake 8.0 with Tomcat 3.2.2b2 with ajp12 and ajp13 Protocol over mod_jk, 98 MB RAM and Apache 1.3.17-10/mod_ssl2.7.1-0 and apache 1.3.19-3/mod_ssl 2.8.2-5. Every time I get the same result. The server will slow done with lot's of memory usage by Tomcat, the only way to resolve it is to restart tomcat. I have produce the high traffic with making a refresh very often. Has someone the same error, or is it still only a error on my system ? Please help me, it's urgent, thank you for inconvenience, Michael --- [EMAIL PROTECTED]
Cookie Problem
Hi there,
I have a problem using Cookies in my servlet.I am able to create the
cookie and log in but then I have an option where I ask the user if he
wanst to save his password and there I write a cookie for say 9 days.But
when he wnts to logut ,I execute the following code.
out= response.getWriter();
HttpSession session = request.getSession(true);
session.invalidate();
Cookie[] cookies = request.getCookies();
for(int i=0; i cookies.length; i++) {
Cookie thisCookie = cookies[i];
String name = cookies[i].getName();
String value = cookies[i].getValue();
//out.println( + name + : + value);
if (thisCookie.getName().equals(user)) {
// Delete the cookie by setting its maximum age to
zero
//out.println( Before deleting user );
Cookie killcookie = new Cookie(user,null);
//Cookie killcookie = new
Cookie(user,thisCookie.getValue());
thisCookie.setMaxAge(0);
cookies[i].setMaxAge(0);
killcookie.setMaxAge(0);
//killcookie.setPath(/);
response.addCookie(killcookie);
killcookie.setMaxAge(0);
response.addCookie(killcookie); //merciless!!!
out.println( new - After deleting user );
}
}
The weird thing is I am not able to deleet the cookies in IE 5 by using
the above method.I can still see the cookies which I had created,in the
Cookies folder.They are not deleted.I heard somewhere that it takes 4-5
mins to delete cookies in IE.But then its been a day now and I know
Windows's slow but then this just takes the cake.AM I doing something
wrong here(it seems to work fine with NEtscape and in other versions of
IE). If you've an efficient code or mechanism on how to tackle the Logout
problem which's really bugging me,do tell me.
Also,if setMaxAge is not used while creating the cookie then its not
written to the Cookies folder.DOes it exist only in the browser header in
this case?
Thanks and Regards,
Shravan
Timeout issue
Hi there, I have a problem with a certain servlet code of mine which takes a lot of time to execute.The problem is that since it takes a lot of time to execute,the browser times out the servlet after say 5 minutes.I heard somewhere that this can be remedied by using out.flush() for the output stream;that didnt work and i learnt later that the problem is actually with Apache which buffers output in 8k units.I was wondering whether this setting could be changed or if there were any other solution to this problem.I looked at certain threading issues but am generally uncomfortable using the meta header and refreshing it every 10 seconds,till the thread of the task is completed. Also,found out that we can increase the timeout for the apache web server by changing the httpd.conf file.But is there anyway to reduce the output buffer size? Thanks Regards, Shravan
Re: Timeout issue
Thanks Jon, Well,I guess thats pretty much the only option unless I get the Apache source code and make the changes and compile it!..I had a doubt over here.How do you handle multiple users accessing the same servlet of yours.I mean,at the same time if 2/more users access your servlet and consider for a moment that,what one person requires to be done from the servlet is different from what the other person wants.basically if the parameters are different,i dont see how you can handle multiple users accessing the servlet and being provided the results they asked for.Probably there is a way,but I'm ignorant here and would like to know if and how its possible. Regards, Shravan On Mon, 23 Apr 2001, Jon Barber wrote: Hi Shravan, I've recently had the same situation and we solved it thus : Encapsulate the lengthy process in an object that implements Runnable, complete with an isFinished() call. Start a seperate thread to execute this and place the object in the httpsession. Send a page back to the user with, say, a 5 second refresh which updates the user on the status of the process. It's not ideal, as it is a form of polling, but it gives the opportunity for user feedback. We cached the last 5 processing times and could give an ETA to the user based on the mean. Jon. On Monday 23 April 2001 08:13, Shravan Shashikant wrote: Hi there, I have a problem with a certain servlet code of mine which takes a lot of time to execute.The problem is that since it takes a lot of time to execute,the browser times out the servlet after say 5 minutes.I heard somewhere that this can be remedied by using out.flush() for the output stream;that didnt work and i learnt later that the problem is actually with Apache which buffers output in 8k units.I was wondering whether this setting could be changed or if there were any other solution to this problem.I looked at certain threading issues but am generally uncomfortable using the meta header and refreshing it every 10 seconds,till the thread of the task is completed. Also,found out that we can increase the timeout for the apache web server by changing the httpd.conf file.But is there anyway to reduce the output buffer size? Thanks Regards, Shravan
Memory buildup on Tomcat JVM
Hi there, Was wondering whether you guys had a similar problem as I have been having.A servlet code has hashtables and vectors in it and I do alot of assignment for these vectors/hashtables in the code..around 1000 vector elemtns and 100 hs elemnts.i clean it up after execution and set them to null,but my memory for the java vm starts around 9k when the code starts executing and at the end of its at around 24K(chked it out in the task manager)..basically it doesnt seem to cause much trouble but was wondering what the problem is and if it can be rectified.. Thanks and Regards, Shravan
