Re: tomcat can not connect to MySql

2007-09-23 Thread fdehghani

Tomcat 5.5.9
OS Windows Server 2003 , Windows XP
Mysql 5.0
tomcat and mysql on the same server

javax.transaction.SystemException
com.met.data.factory.user.UserFactory.getUser(UserFactory.java:694)
com.met.action.LoginAction.execute(LoginAction.java:56)

org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)

org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
com.met.filter.CharsetFilter.doFilter(CharsetFilter.java:31)

any connection closed after open it

-- Fatemeh


David Smith-2 wrote:
 
 Can you provide some specifics of your environment?
 
 Tomcat version
 OS
 Mysql version (both driver and server)
 Both tomcat and mysql on the same machine?
 If not, any firewalls that might be timing out a connection?
 How long does it run before it doesn't work?
 Can you post the full stack trace of your exception including root cause?
 In your design, are you holding on to connections or closing them as 
 soon as you are done talking to the db?
 
 Mysql server does timeout connections after 8 hours by default.  If you 
 are using tomcat's database pooling, this can be fixed with the simple 
 addition of a validation query in the config.  In any case, it's best 
 practice for the code querying the db to close connections as soon as 
 reasonably possible and not keep them open.
 
 --David
 
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Re: tomcat can not connect to MySql

2007-09-23 Thread fdehghani

also i have to say that i use hibernate 3 to connect to Mysql 

thanks for your attention

-- Fatemeh


fdehghani wrote:
 
 Tomcat 5.5.9
 OS Windows Server 2003 , Windows XP
 Mysql 5.0
 tomcat and mysql on the same server
 
 javax.transaction.SystemException
   com.met.data.factory.user.UserFactory.getUser(UserFactory.java:694)
   com.met.action.LoginAction.execute(LoginAction.java:56)
 
 org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
 
 org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
   org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
   org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
   com.met.filter.CharsetFilter.doFilter(CharsetFilter.java:31)
 
 any connection closed after open it
 
 -- Fatemeh
 
 
 David Smith-2 wrote:
 
 Can you provide some specifics of your environment?
 
 Tomcat version
 OS
 Mysql version (both driver and server)
 Both tomcat and mysql on the same machine?
 If not, any firewalls that might be timing out a connection?
 How long does it run before it doesn't work?
 Can you post the full stack trace of your exception including root cause?
 In your design, are you holding on to connections or closing them as 
 soon as you are done talking to the db?
 
 Mysql server does timeout connections after 8 hours by default.  If you 
 are using tomcat's database pooling, this can be fixed with the simple 
 addition of a validation query in the config.  In any case, it's best 
 practice for the code querying the db to close connections as soon as 
 reasonably possible and not keep them open.
 
 --David
 
 -
 To start a new topic, e-mail: users@tomcat.apache.org
 To unsubscribe, e-mail: [EMAIL PROTECTED]
 For additional commands, e-mail: [EMAIL PROTECTED]
 
 
 
 
 

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tomcat can not connect to MySql

2007-09-22 Thread fdehghani

I ues Appache tomcat as my App Server in my project
but when running its service, after sometime when run my project,tomcat say
that can not connect to database(SystemException)
then i should restart its service to work correctly.
i'm not sure thet its tomcat's problem or MySql
please help me.
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