[Springframework-developer] Non Thread-safe hibernate session

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As you can see below, a thread, other than the one that had the session
created for it, tries to access a session but it has been closed by the
valid owner thread.  This only occurs under decent load.  There must be
some thread safety issue in Spring or the whole ThreadLocal idea goes
out the window.  Does anybody have any idea how this could occur?  I
don't see how I could be misinterpreting this trace.

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FATAL (SessionImpl.java:528) - Constructor for session:
net.sf.hibernate.impl.SessionImpl@b72884 on thread : TP-Processor1

FATAL (SessionFactoryImpl.java:342) - Session :
net.sf.hibernate.impl.SessionImpl@b72884 created for Thread :
TP-Processor1

...later on...=20

closing session : net.sf.hibernate.impl.SessionImpl@b72884 and conn:
com.mchange.v2.c3p0.impl.NewProxyConnection@4ad009 on Thread :
TP-Processor1

...later on...

net.sf.hibernate.HibernateException: Session is closed :
net.sf.hibernate.impl.SessionImpl@b72884 on thread : TP-Processor7

        at
net.sf.hibernate.impl.SessionImpl.connection(SessionImpl.java:3313)

        at
net.sf.hibernate.proxy.LazyInitializer.initialize(LazyInitializer.java:4
7)

        at
net.sf.hibernate.proxy.LazyInitializer.initializeWrapExceptions(LazyInit
ializer.java:60)

        at
net.sf.hibernate.proxy.LazyInitializer.getImplementation(LazyInitializer
.java:164)

        at
net.sf.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializ
er.java:108)

        at
com.sony.soe.guilds.model.GameCharacter$$EnhancerByCGLIB$$25b6cd13.getBi
oImage(<generated>)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39)

        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)

        at java.lang.reflect.Method.invoke(Method.java:324)

        at
org.apache.velocity.runtime.parser.node.PropertyExecutor.execute(Propert
yExecutor.java:111)

        at
org.apache.velocity.util.introspection.UberspectImpl$VelGetterImpl.invok
e(UberspectImpl.java:300)

        at
org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentif
ier.java:157)

        at
org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReferenc
e.java:175)

        at
org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReferen
ce.java:307)

        at
org.apache.velocity.runtime.parser.node.ASTNotNode.evaluate(ASTNotNode.j
ava:47)

        at
org.apache.velocity.runtime.parser.node.ASTExpression.evaluate(ASTExpres
sion.java:46)

        at
org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfState
ment.java:69)

        at
org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.jav
a:231)

        at
org.apache.velocity.runtime.directive.Parse.render(Parse.java:181)

        at
org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective
.java:116)

        at
org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:56
)

        at
org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfState
ment.java:71)

        at
org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:56
)

        at
org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfState
ment.java:71)

        at
org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.jav
a:231)

        at
org.apache.velocity.runtime.directive.Parse.render(Parse.java:181)

        at
org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective
.java:116)

        at
org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.jav
a:231)

        at org.apache.velocity.Template.merge(Template.java:256)

        at com.sony.soe.web.mvc.VelocityView.go(VelocityView.java:181)

        at
com.sony.soe.guilds.view.VelocityLayout.go(VelocityLayout.java:135)

        at
org.infohazard.maverick.flow.CommandBase.go(CommandBase.java:79)

        at
org.infohazard.maverick.Dispatcher.service(Dispatcher.java:345)

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)

        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:237)

        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:157)

        at
net.sf.acegisecurity.ui.AbstractIntegrationFilter.doFilter(AbstractInteg
rationFilter.java:170)

        at
com.sony.soe.guilds.controller.SecurityFilter.doFilter(SecurityFilter.ja
va:118)

        at
net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.j
ava:88)

        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:186)

        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:157)

        at
org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilt
erInternal(OpenSessionInViewFilter.java:17

1)

        at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequ
estFilter.java:76)

        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica
tionFilterChain.java:186)

        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt
erChain.java:157)

        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv
e.java:214)

        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveCo
ntext.java:104)

        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:5
20)

        at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardCon
textValve.java:198)

        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv
e.java:152)

        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveCo
ntext.java:104)

        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:5
20)

        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:137)

        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveCo
ntext.java:104)

        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:117)

        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveCo
ntext.java:102)

        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:5
20)

        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
java:109)

        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveCo
ntext.java:104)

        at
org.apache.catalina.valves.RequestDumperValve.invoke(RequestDumperValve.
java:169)

        at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveCo
ntext.java:102)

        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:5
20)

        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)

        at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)

        at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:296)

        at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:372)

        at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:694)

        at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:
626)

        at
org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:807)

        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool
.java:644)

        at java.lang.Thread.run(Thread.java:534)

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-----------------------------------------

Andres March

Platform - Apps Engineering

Sony Online Entertainment

desk: 858.577.3373

cell:   619.519.1519

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