Re: Tomcat is stoping Urgent
IMHO it is problem with jdbc-odbc bridge. However Access and HDBC-ODBC aren't the best solution for a production system. IMHO they are worst. Kiran Patel wrote: Urgent! I am using Tomcat 4.1 for my application which is accessing data from = the Access database through the ODBC connection. Everything was working = fine until today. Suddenly when I tried to enter some records in the = data base through the application, Tomcat is stopped. I got following = error in the error log. Please help me. Kiran An unexpected exception has been detected in native code outside the VM. Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at = PC=3D0xC08FA3C Function=3DSQLFetch+0x16EF Library=3DC:\WINNT\system32\odbcjt32.dll Current Java thread: at sun.jdbc.odbc.JdbcOdbc.bindInParameterString(Native Method) at sun.jdbc.odbc.JdbcOdbc.SQLBindInParameterString(JdbcOdbc.java:972) at = sun.jdbc.odbc.JdbcOdbcPreparedStatement.setChar(JdbcOdbcPreparedStatement= .java:3106) at = sun.jdbc.odbc.JdbcOdbcPreparedStatement.setString(JdbcOdbcPreparedStateme= nt.java:764) at = - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: UTF-8 encoding
Simply I don't get it. You send data over HTTP. You can send data as you wish. What about servlet serving images? Just send UTF8 encoded data and everything will be allright. No way Tomcat knows do you want to send cyrrilic letter or french accent letter. It's up to you. Niki Harry Mantheakis wrote: Okay, thanks Yoav. I got the source, and I can see what's happening - thanks to Google - at this URL: http://java.sun.com/blueprints/code/jps131/src/com/sun/j2ee/blueprints/encod ingfilter/web/EncodingFilter.java.html The 'doFilter' method sets the encoding for the *request* which does not seem to address the original question, which was asking how to 'force tomcat to send data in UTF-8 encoding'. Interesting filter nevertheless! It is a subject that concerns me. Kind regards Harry Hi, implement a EncodingFilter class Where's the interface? javax.servlet.Filter is the interface. He probably had http://java.sun.com/blueprints/code/jps131/api/com/sun/j2ee/blueprints/e ncodingfilter/web/EncodingFilter.html in mind. Yoav Shapira - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Of .war and .jar files - and .jsp class files
Reading http://jakarta.apache.org/tomcat/tomcat-5.0-doc/setup.html I have noticed this quote * *Java location*: The installer will use the registry or the JAVA_HOME environment variable to determine the base path of the JDK or a JRE. If only a JRE (or an incorrect path) is specified, Tomcat will run but will be unable to compile JSP pages at runtime. Either all webapps will need to be precompiled (this can be easily done using the Tomcat deployer), or the |lib\tools.jar| file from a JDK installation must be copied to the |common\lib| path of the Tomcat installation. /quote So your solution is named Tomcat deployer Hope this helps Niki Malcolm Warren wrote: I am changing from Jrun to Tomcat and I have just one problem remaining. Jrun gave an additional security possibility that I am unable to extend to Tomcat. In Jrun you do not need to place your .jsp files, nor the automatically generated .java files on your production server. I could simply .jar up the automatically generated .class files and place the .jar file in the /WEB-INF/jsp folder on the production server. That way I had 3 big advantages: 1) Nobody could look into my .jsp files. 2) Nobody could look into my .java files for my .jsps 3) Compilation on the production server of the .jsps was already done. - Everything was ready in the single .jar file. Now perhaps I am missing something, so please put me right. And I'm just starting now to use ant and I've never bothered with .war files because I don't distribute my programmes, they're just used on our production server. If I create a .war file for the production server then the .war file contains no compiled .jsps, just the original .jsp files - is that right? There seem to me to be obvious advantages to what I was able to do in Jrun - can I do something similar in Tomcat? In general I get many more security features with Tomcat 4.1, than I did with Jrun 3.1, but this particular possibility seems to me to be a good one. I have tried creating .jar files of the Tomcat's /work directory but without any success. Can anybody enlighten me? Thanks for any help. Regards, Malcolm Warren - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: What's happening to my beans?
Just don't forged to synchronize the access to the singleton mehtods... in standalone application synchronization is not needed, but in server side code it is vital. Singleton is a class that may have zero or one instance only. It is achived with private constructor. Charles Daniel wrote: Thanks, I'll try google first to see what it's all about. Thanks Again, Charles - Original Message - From: Shapira, Yoavmailto:[EMAIL PROTECTED] To: Tomcat Users Listmailto:[EMAIL PROTECTED] Sent: Tuesday, March 30, 2004 12:56 PM Subject: RE: What's happening to my beans? Hi, You can google for the exact definition of the singleton design pattern. In this case, you would write a singleton to hold all the beans, one per user, instead of putting them in the session object. Because there will be only one instance of this singleton in the JVM, it will be shared by the non-SSL and SSL hosts. Your JSP pages and servlets would get the user bean from this singleton instead of from the session. If you need specific code we'll be glad to help. Yoav Shapira Millennium Research Informatics -Original Message- From: Charles Daniel [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 30, 2004 1:53 PM To: Tomcat Users List Subject: Re: What's happening to my beans? Thanks Yoav, I've figured as much. From my old C programming days I am well aware of scoping rules. Yet I am still at a loss of how to solve this particular problem. I'm not certain how to using a database would solve the problem and I'm not familiar with singleton. What is it and how can I use it. Thanks Charles - Original Message - From: Shapira, Yoavmailto:[EMAIL PROTECTED]mailto:[EMAIL PROTECTED] To: Tomcat Users Listmailto:[EMAIL PROTECTED]mailto:[EMAIL PROTECTED] Sent: Tuesday, March 30, 2004 12:41 PM Subject: RE: What's happening to my beans? Hi, I think you can't have the same session for both SSL and non-SSL activity. You get different sessions, each with its own bean, hence the behavior you describe. Can you use a database? A share singleton? Yoav Shapira Millennium Research Informatics -Original Message- From: Charles Daniel [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 30, 2004 1:37 PM To: [EMAIL PROTECTED]mailto:tomcatmailto:[EMAIL PROTECTED]mailto:tomcat- [EMAIL PROTECTED] Subject: What's happening to my beans? My installation is Apache2+Tomcat4+mod_ssl. I am running a http main server along with a https virtual host on an aliased ip address. To track users I created a session bean which holds user info ( e-mail, login status ). Naturally this bean holds vital information as it allows links to the users transactions such as shopping cart transactions. The bean is accessible by both servers (same machine and application directory tree). The SSL enabled virtual host now serves my Login, Registration and Shopping Cart JSP's while the main server serves the non- secure pages. Before I implemented SSL the strategy of using a bean to track users was sound, but now it seems that the bean is not persistant between the main server and virtual host. My guess is that main server and the virtual host have their own version of the bean. Therefore, the bean in my virtual host is out of scope once I navigate back to page controlled by the main server. The result is that the main server is left unaware if the user has logged in or whether or not the user has a shopping cart containing items. Is there a better strategy for communicating information like this between the main server and the virtual host. I am reluctant to try using cookies. I've tried the java.sun.com JSP forum with no success. Maybe you guys can help even if this post is a little off subject for this forum. This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: tomcat-user- [EMAIL PROTECTED]mailto:tomcat-usermailto:tomcat-user- [EMAIL PROTECTED] For additional commands, e-mail: tomcat-user- [EMAIL PROTECTED]mailto:[EMAIL PROTECTED]mailto:[EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied,
Re: What is the the maximum characters that Tomcat can handle in a Se rvlet URL (doGet request) ?
As far as I remember 1024 is the limit of URL by RFC. Niki [EMAIL PROTECTED] wrote: Hi, What is Tomcat's limitation in getting requests through the URL - to use the doGet method I.e if i run a Servlet, and i want to receive the request in the url ,what is the the maximum characters i can get ? Regards Yair Fine - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Of .war and .jar files - and .jsp class files
I think, he means that he can redistribute his application wihtout giving the person who will install the application on it's server the access to jps code. Obviously no one can access jsp code via web server. Niki Shapira, Yoav wrote: Hi, You can precompile your JSPs and include the class files in the WAR. In addition, no one can see the compiled .java files for your JSPs anyways because they're in tomcat's work directory, not in a web-accessible location. Yoav Shapira Millennium Research Informatics -Original Message- From: Malcolm Warren [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 31, 2004 7:55 AM To: Tomcat Users List Subject: Re: Of .war and .jar files - and .jsp class files Thank you very much for your answers, but they haven't quite hit the mark yet. Every .jsp page in Tomcat, as we all know, is compiled in /work/Standalone/localhost/ in an appropriate application folder e.g. _ is the folder in the case of the ROOT application. It's fine by me if this is done when I first access the page in a browser in my test environment. Now when I transfer everything to my production server I would like to eliminate all of the .jsp pages from the application, and all of the .java files, and just send a .jar file containing the .class files in /work/Standalone/localhost/$applicationDir. That way the compilation is already done, and nobody can study my .jsp files. In theory I could just create a directory tree somewhere of org/apache/jsp/ copy all the automatically generated .class files into this directory tree and .jar it all up, and Tomcat should find them either in /WEB-INF/lib or in /work/Standalone/localhost/$applicationDir, but it doesn't. Of course I could be missing the point entirely here, and I shouldn't even by thinking about doing these things, but as I say, in Jrun I could send the automatically generated .jsp .class files to the production environment in a nice .jar file and I had more security because noone could read the original .jsp files, although to be honest there aren't any people in my company who would be interested in reading them, but I feel more secure that way. Any more enlightenment on this would be very helpful. On Wed, 31 Mar 2004 06:00:22 -0600, QM [EMAIL PROTECTED] wrote: On Wed, Mar 31, 2004 at 12:02:40PM +0200, Malcolm Warren wrote: : Jrun gave an additional security possibility that I am unable to extend to : Tomcat. In Jrun you do not need to place your .jsp files, nor the : automatically generated .java files on your production server. I could : simply .jar up the automatically generated .class files and place the .jar : file in the /WEB-INF/jsp folder on the production server. Tomcat does something similar: - As one poster already mentioned, keep all of your jar files in WEB-INF/lib. - make sure the JSPs are mapped to servlet paths in WEB-INF/web.xml. (I'm out on a limb here, but it sounds as if Jrun automagically loads your JSP jar file and creates the mappings for you.) If the latter sounds like a pain in the rear, there are Ant tasks to do the precompilation for you and generate the web.xml snippet. : If I create a .war file for the production server then the .war file : contains no compiled .jsps, just the original .jsp files - is that right? Not true. The war file contains whatever you put in it. JSPs, images, jars, whatever. -QM - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
tomcat performance with 100 webapps
Have some one tested Tomcat with more than 100 webapps. For example e-commrece solution, without many bells and whistles - jsut shopbuilder and sopiing cart Each webapp is based on trubine/velocity/torque. Each webapp using it's own firebird database. Can I expect smooth performance on dual xeon with raid controler and lot of RAM (16G) on RedHat EAS? Niki Icygen Co. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: tomcat performance with 100 webapps
God save our apps from any memory leaks. Of course we will test them for this issue. And perform stress testing 20 sounds fair enought. Frankly I don't expect too much traffic per e-shop. Niki Shapira, Yoav wrote: Hi, We have tomcat instances that run ~20 webapps without a problem. Beyond that, we haven't tried, but then again that's why we have tools like JMeter, no? ;) In large part this will depend on the soundness of the application. Especially if it's 100 of the same app, because then each memory leak would be multiplied by 100. Yoav Shapira Millennium Research Informatics -Original Message- From: Niki Ivanchev [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 30, 2004 9:43 AM To: Tomcat User Subject: tomcat performance with 100 webapps Have some one tested Tomcat with more than 100 webapps. For example e-commrece solution, without many bells and whistles - jsut shopbuilder and sopiing cart Each webapp is based on trubine/velocity/torque. Each webapp using it's own firebird database. Can I expect smooth performance on dual xeon with raid controler and lot of RAM (16G) on RedHat EAS? Niki Icygen Co. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
