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From "Rob Gregory" <Rob.Greg...@ibsolutions.com>
Subject RE: DBCP abandoned trace - unable to understand the leak
Date Thu, 04 Nov 2010 12:36:32 GMT
Are you sure it is running against the code you think it is running
against. Try changing something that is output to the log files and make
sure you see this change before the abandoned  stack trace is thrown.

> -----Original Message-----
> From: sasidhar prabhakar [mailto:sasidhar1229@gmail.com]
> Sent: 04 November 2010 12:35
> To: Tomcat Users List
> Subject: Re: DBCP abandoned trace - unable to understand the leak
> 
> The class is fine but in log it is showing this one. Here everything
closed
> fine.
> Then why it is showing like this
> 
> DBCP object created 2010-11-04 11:07:59 by the following code was
never
> closed:
> java.lang.Exception
> at
>
org.apache.tomcat.dbcp.dbcp.AbandonedTrace.setStackTrace(AbandonedTrace.
java:1
> 60)
> at
>
org.apache.tomcat.dbcp.dbcp.AbandonedObjectPool.borrowObject(AbandonedOb
jectPo
> ol.java:86)
> at
>
org.apache.tomcat.dbcp.dbcp.PoolingDataSource.getConnection(PoolingDataS
ource.
> java:96)
> at
>
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSourc
e.java
> :880)
> *at SponserSummaryDAO.getCountryName(SponserSummaryDAO.java:304)
> at SponserSummaryBO.getCountryName(SponserSummaryBO.java:61)
> at SignUpAction.execute(SignUpAction.java:52)*
> at
>
org.apache.struts.action.RequestProcessor.processActionPerform(RequestPr
ocesso
> r.java:425)
> at
>
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
228)
> at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
> at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> at
>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFi
> lterChain.java:290)
> at
>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChai
> n.java:206)
> at RedirectFilter.doFilter(RedirectFilter.java:56)
> at
>
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFi
> lterChain.java:235)
> at
>
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChai
> n.java:206)
> at
>
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java
> :233)
> at
>
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java
> :191)
> at
>
org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authenticator
Base.j
> ava:433)
> at
>
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:128)
> at
>
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:102)
> at
>
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:1
> 09)
> at
>
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:2
93)
> at
>
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:84
9)
> at
>
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(
Http11
> Protocol.java:583)
> at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
> at java.lang.Thread.run(Thread.java:595)
> 
> If anything else, what are the possible connection leaks may occur in
java.

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