Java Heap Error when using Stateless Session Timer Bean deployed in Oracle
Hi,
Am getting following Java Heap Error when using Stateless Session Timer Bean deployed in Oracle 10g AS R3 (Oracle Containers for J2EE 10g (10.1.3.0.0) (build 060119.1546.05277) ):
06/08/02 14:58:43 javax.ejb.EJBException: java.lang.OutOfMemoryError: Java heap space
06/08/02 14:58:43 at com.evermind.server.ejb.EJBUtils.getLocalUserException(EJBUtils.java:304)
06/08/02 14:58:43 at com.evermind.server.ejb.interceptor.system.AbstractTxInterceptor.convertAndHandleMethodException(AbstractTxInterceptor.java:67)
06/08/02 14:58:43 at com.evermind.server.ejb.interceptor.system.TxNotSupportedInterceptor.invoke(TxNotSupportedInterceptor.java:45)
06/08/02 14:58:43 at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
06/08/02 14:58:43 at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:86)
06/08/02 14:58:43 at com.evermind.server.ejb.StatelessSessionEJBHome.invokeTimer(StatelessSessionEJBHome.java:71)
06/08/02 14:58:43 at com.evermind.server.ejb.EJBContainer.invokeTimer(EJBContainer.java:1624)
06/08/02 14:58:43 at oracle.ias.container.scheduler.TimerTask.runBeanTimer(TimerTask.java:92)
06/08/02 14:58:43 at oracle.ias.container.scheduler.TimerTask.run(TimerTask.java:184)
06/08/02 14:58:43 at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:819)
06/08/02 14:58:43 at java.lang.Thread.run(Thread.java:595)
06/08/02 14:58:43 Caused by: java.lang.OutOfMemoryError: Java heap space
I had tried using -Xms / -Xmx options (upto 1 GB).
The trace of exception gets delayed (from being displayed on the console) as the memory size is increased; but after sometime it starts getting displayed on the console.
Even though this exception is displayed on the console, the Timer Bean continues to execute upto sometime before it finally crashes!
If anyone has encountered such problem; would appreciate if you could share the solution.
Regards, Vidyadhar
Hi guys, I have the same problem. I have an application EAR file with two modules (EJB and WAR starting in this order). The application can schedule a process via EJB timer. In this case restarting the server I receive the error above. If I change the modules start order --> WAR - EJB the server start correctly, but the application scheduler fails (the persistency is not working) with this error:
07/10/09 10:30:54 FINISSIMO: TimerTask.runBeanTimer java.lang.NullPointerException; nested exception is: java.lang.NullPointerExceptionjavax.ejb.TransactionRolledbackLocalException: java.lang.NullPointerException; nested exception is: java.lang.NullPointerException
java.lang.NullPointerException
at java.util.ListResourceBundle.handleGetObject(ListResourceBundle.java:107)
at java.util.ResourceBundle.getObject(ResourceBundle.java:319)
at java.util.ResourceBundle.getString(ResourceBundle.java:285)
at java.util.logging.Formatter.formatMessage(Formatter.java:108)
at oracle.j2ee.util.TraceLogFormatter.format(TraceLogger.java:124)
at oracle.j2ee.util.TraceLogger$TraceLoggerHandler.publish(TraceLogger.java:105)
at java.util.logging.Logger.log(Logger.java:428)
at java.util.logging.Logger.doLog(Logger.java:450)
at java.util.logging.Logger.log(Logger.java:539)
at oracle.ias.container.timer.TimerEntry.readObjFromBytes(TimerEntry.java:308)
at oracle.ias.container.timer.TimerEntry.getInfo(TimerEntry.java:107)
at oracle.ias.container.timer.Timer.getInfo(Timer.java:367)
at oracle.ias.container.timer.EJBTimerImpl.getInfo(EJBTimerImpl.java:89)
at com.finantix.foundation.integration.ejbtimer.EJBTimerServiceExecutorBean.ejbTimeout(EJBTimerServiceExecutorBean.java:42)
at com.evermind.server.ejb.interceptor.joinpoint.EJBTimeoutJoinPoint.invoke(EJBTimeoutJoinPoint.java:20)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.SetContextActionInterceptor.invoke(SetContextActionInterceptor.java:44)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.TxBeanManagedInterceptor.invoke(TxBeanManagedInterceptor.java:53)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:87)
at com.evermind.server.ejb.StatelessSessionEJBHome.invokeTimer(StatelessSessionEJBHome.java:38)
at com.evermind.server.ejb.EJBContainer.invokeTimer(EJBContainer.java:1714)
at oracle.ias.container.scheduler.TimerTask.runBeanTimer(TimerTask.java:106)
at oracle.ias.container.scheduler.TimerTask.run(TimerTask.java:220)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
at java.lang.Thread.run(Thread.java:595)
javax.ejb.TransactionRolledbackLocalException: java.lang.NullPointerException; nested exception is: java.lang.NullPointerException
at com.evermind.server.ejb.EJBUtils.getLocalUserException(EJBUtils.java:309)
at com.evermind.server.ejb.interceptor.system.AbstractTxInterceptor.convertAndHandleMethodException(AbstractTxInterceptor.java:73)
at com.evermind.server.ejb.interceptor.system.TxBeanManagedInterceptor.invoke(TxBeanManagedInterceptor.java:55)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.InvocationContextPool.invoke(InvocationContextPool.java:55)
at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:87)
at com.evermind.server.ejb.StatelessSessionEJBHome.invokeTimer(StatelessSessionEJBHome.java:38)
at com.evermind.server.ejb.EJBContainer.invokeTimer(EJBContainer.java:1714)
at oracle.ias.container.scheduler.TimerTask.runBeanTimer(TimerTask.java:106)
at oracle.ias.container.scheduler.TimerTask.run(TimerTask.java:220)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
at java.util.ListResourceBundle.handleGetObject(ListResourceBundle.java:107)
at java.util.ResourceBundle.getObject(ResourceBundle.java:319)
at java.util.ResourceBundle.getString(ResourceBundle.java:285)
at java.util.logging.Formatter.formatMessage(Formatter.java:108)
at oracle.j2ee.util.TraceLogFormatter.format(TraceLogger.java:124)
at oracle.j2ee.util.TraceLogger$TraceLoggerHandler.publish(TraceLogger.java:105)
at java.util.logging.Logger.log(Logger.java:428)
at java.util.logging.Logger.doLog(Logger.java:450)
at java.util.logging.Logger.log(Logger.java:539)
at oracle.ias.container.timer.TimerEntry.readObjFromBytes(TimerEntry.java:308)
at oracle.ias.container.timer.TimerEntry.getInfo(TimerEntry.java:107)
at oracle.ias.container.timer.Timer.getInfo(Timer.java:367)
at oracle.ias.container.timer.EJBTimerImpl.getInfo(EJBTimerImpl.java:89)
at com.finantix.foundation.integration.ejbtimer.EJBTimerServiceExecutorBean.ejbTimeout(EJBTimerServiceExecutorBean.java:42)
at com.evermind.server.ejb.interceptor.joinpoint.EJBTimeoutJoinPoint.invoke(EJBTimeoutJoinPoint.java:20)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.SetContextActionInterceptor.invoke(SetContextActionInterceptor.java:44)
at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:119)
at com.evermind.server.ejb.interceptor.system.TxBeanManagedInterceptor.invoke(TxBeanManagedInterceptor.java:53)
... 9 more
Any idea?
Thx Auro
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for Java.
One java article I found said to turn off the Java garbage
collection using -XX:-UseGCOverheadLimit (
http://forums.java.net/jive/message.jspa?messageID=228596).
It seems like turning off the garbage collection would be the
opposite of what I am trying to do. Are there any thoughts about
this?
Are there any hotfixes for CF8? and where are they located?
ScottScott, the error is a symptom, not the cause of your
problems. Turning off that option won't "solve" the problem, which
is that you're running out of memory. More on that option in a
moment.
Let's talk first about your observation of trying to change
the max memory from 1 to 2 gig. Since you're on Windows (32 bit),
as you say, you can't use more than 2g per process (it's not really
a Java limit, but rather a Windows one).
But as you found, you can't set CF to 2g because the JVM
won't start. Again, this is not a CF-specific issue. You can see
discussions of the same problem with plain old Java apps, as at
http://forums.java.net/jive/message.jspa?messageID=228596.
So, similar to what they say, the consensus seems to be that
you can set it to somewhere between1.3 and 1.7 gb, before the JVM
won't start. You have to try different values for yourself.
Now, that extra few hundred meg may be all you need to get
past your problem, but really that's often just forestalling the
inevitable. You need to find why CF is using so much memory. You
say you're using CF8 but don't say if it's Enterprise or Standard.
If the former, then you have the CF8 Server Monitor (accessible in
the CF Admin, and discussed in a multipart series I wrote for the
Adobe Dev Center, as discussed at
http://carehart.org/blog/client/index.cfm/2008/7/30/45page_server_monitor_guide).
That, as well as tools like FusionReactor and SeeFusion, can help
you to better see how CF is using memory.
All three offer a graphical interface to show how memory use
is trending. You may see if it grows steadily throughout the day,
or grows in spikes. People tend to say "I have a memory leak", when
in fact it may be just that they have either a few requests that
use too much memory (so you'll see a stair stepping rise in memory
use concurrent with their execution), or it may be that they're
sticking stuff into shared scopes (session, application, or server)
and those are living well beyond the live of each request.
The CF8 Server Monitor even has a memory tracking feature,
but it has to be used carefully. If you enable it, you may find it
brings your server to its knees.I'll do a blog entry soon on how to
use it most effectively (something I learned since writing the
articles last year).
One thing that the monitor can tell you, without any of the
"start" buttons enabled at the top of the monitor, is how many
sessions you have. That may be very enlightening. You may have
thousands of them, and not realize it, because of bots, spiders,
and other crap requests. See the "active sessions" page of the
Server Monitor, and its graph icon in particular (discussed in more
detail in one of my articles).
Sadly, neither FusionReactor nor SeeFusion can tell you how
many sessions are currently running, so if you're on CF8 Standard
(or if others reading this are on 6 or 7, where they can use FR or
SF), you can't easily see how many sessions there are. (There are
undocumented, unsupported methods, such as discussed at
http://rewindlife.com/2003/09/08/undocumented-application-scope-functions/.
Just be aware some techniques work differently depending on whether
J2EE sessions are enabled in th CF admin.)
Finally, about your observation of the usegcoverheadlimit
option, and the recommendation to turn it off: the article you
point to doesn't say doing so would disable GC. I'm curious how you
may have concluded that.But digging into things more, I see that
disabling it (using the - before it) will turn off a feature
(introduced in 6) which limits the proportion of the VM's time that
is spent in GC before an OutOfMemory error is thrown. That's the
error you're seeing, that the JVM has detected too much time is
being spent in doing GC.
So turning off the option doesn't "turn off the Java garbage
collection". It just changes whether an OOM error will be thrown
even before being really out of memory, simply because too much
time is being spent in GC.
And even then, how this option works (if enabled, which it is
by default) changes depending on whether you're using a parrallel
or concurrent collector (as discussed in two places in
http://java.sun.com/javase/technologies/hotspot/gc/gc_tuning_6.html,
if you search for that switch).
Hope some of that helps. -
OEDQ - Java Heap errors - thoughts?
I came across a rather annoying problem while trying to load data into OEDQ today and wondered if anyone can offer any insight.
2 separate installations (OEDQ 9.0.5) trying to load 2 different data loads (120k records and 35k records) both produced java heap errors while trying to create the datastore connection.
Following the various support articles regarding the java memory settings and systematically "playing" with the various values for min/max and reserved memory setting from dnconfig made no difference, the same java heap error every time.
I then noticed that the 2 data sources were both in the newer .xlsx format having been extracted to excel and then saved, I opened them and re-saved as first .csv and then .xls -- in both cases the data load now worked.
Given that more people will be moving to the newer xlsx format as "default" I wondered if anyone has any ideas on configuration to deal with what appears to be an added overhead when dealing with this format of files? we can of course just tell people not to use it but it would be nice to know why they cant.Hi,
The current Excel driver works by pulling the whole of the spreadsheet into memory before capturing it. This can mean that with large spreadsheets it is possible not to have enough heap memory allocated to perform this function. This does not normally happen if using server-side data store connections as the server normally has considerably more memory allocated to it than the client application. If you do encounter this and cannot overcome it by adjusting the relevant heap memory settings, the workaround is as as you say to save as a CSV or other text files which can be streamed in (and out).
Probably the reason that xlsx files fail where xls files succeed is that the xlsx save creates a larger file.
Regards,
Mike
Edited by: MikeMatthews on Nov 6, 2012 3:20 AM -
Hi All
I have developed a Matrix report recently and it is throwing error when it was loaded and ran locally and also after registerd in the Apps.The error is "Java Heap Error".Correct me if i am wrong to my knowledge what i am thinking is it is getting time out and unable to process the data.The report is running fine for few number of records.Please help me in this regard.
Help will be really apreciated.
regards,
kalyanHi kalyan,
What i know about Java Heap error is, it comes when you exceed the length allocated.
Sometimes it happens that you have to take the whole name upto 59 characters, means if somebody gets beyond the limit of 59, ideally you should truncate it.
If you dont, then it starts giving translation length error or say java heap error. -
Any help will be greatly appreciated.
I got the following errors when using the ant task source2wsdd:
[source2wsdd] classpath C:\bea\weblogic81\server\lib\weblogic.jar;C:\bea\weblogi
c81\server\lib\webservices.jar
[source2wsdd] source2wsdd: Cannot find doclet class weblogic.webservice.tools.dd
gen.ServiceGen
[source2wsdd] 1 error
[ant] Exiting C:\project\DCII\ant\batch-build.xml.
BUILD FAILED
C:\project\ant\build.xml:67: The following error occurred while executing this l
ine:
C:\project\DCII\ant\batch-build.xml:326: javadoc execution failed
at org.apache.tools.ant.ProjectHelper.addLocationToBuildException(Projec
tHelper.java:539)
at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:388)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
at org.apache.tools.ant.Main.runBuild(Main.java:673)
at org.apache.tools.ant.Main.startAnt(Main.java:188)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:196)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:55)
Caused by: C:\project\DCII\ant\batch-build.xml:326: javadoc execution failed
at weblogic.ant.taskdefs.webservices.autotype.JavaSource2DD.runJavadoc(J
avaSource2DD.java:297)
at weblogic.ant.taskdefs.webservices.autotype.JavaSource2DD.execute(Java
Source2DD.java:150)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at ise.antelope.tasks.Call.execute(Call.java:17)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at ise.antelope.tasks.IfTask.doIf(IfTask.java:298)
at ise.antelope.tasks.IfTask.execute(IfTask.java:267)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:386)
... 10 more
--- Nested Exception ---
C:\project\DCII\ant\batch-build.xml:326: javadoc execution failed
at weblogic.ant.taskdefs.webservices.autotype.JavaSource2DD.runJavadoc(J
avaSource2DD.java:297)
at weblogic.ant.taskdefs.webservices.autotype.JavaSource2DD.execute(Java
Source2DD.java:150)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at ise.antelope.tasks.Call.execute(Call.java:17)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at ise.antelope.tasks.IfTask.doIf(IfTask.java:298)
at ise.antelope.tasks.IfTask.execute(IfTask.java:267)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:386)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeTarget(Project.java:1214)
at org.apache.tools.ant.Project.executeTargets(Project.java:1062)
at org.apache.tools.ant.Main.runBuild(Main.java:673)
at org.apache.tools.ant.Main.startAnt(Main.java:188)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:196)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:55)
Total time: 8 seconds
The following is the major parts from my ant build file:
<path id="webservice.classpath">
<pathelement location="${wls.home.dir}/server/lib/weblogic.jar"/>
<pathelement location="${wls.home.dir}/server/lib/webservices.jar"/>
</path>
<target name = "initialize">
<mkdir dir="${build.dir}"/>
<mkdir dir="${class.dir}"/>
<mkdir dir="${dist.dir}/${deploy.env}"/>
<mkdir dir="${jdocs.dir}"/>
<mkdir dir="${weblogic.application.dir}"/>
<taskdef name="call"
classpathref="antelope.classpath"
classname="ise.antelope.tasks.Call"/>
<taskdef name="if"
classpathref="antelope.classpath"
classname="ise.antelope.tasks.IfTask"/>
<taskdef name="servicegen"
classpathref="webservice.classpath"
classname="weblogic.ant.taskdefs.webservices.servicegen.ServiceGenTask"/>
<taskdef name="clientgen"
classpathref="webservice.classpath"
classname="weblogic.ant.taskdefs.webservices.clientgen.ClientGenTask"/>
<taskdef name="source2wsdd"
classpathref="webservice.classpath"
classname="weblogic.ant.taskdefs.webservices.autotype.JavaSource2DD"/>
<taskdef name="wldeploy"
classpathref="webservice.classpath"
classname="weblogic.ant.taskdefs.management.WLDeploy"/>
</target>
<target name="buildEar"
depends="buildCommonJar, ejbc">
<echo message ="[${module.name}] Checking to see if ${ear.file} is up to date...[${appc.classpath}]" />
<source2wsdd
javaSource="${webserviceServer_src_dir}/HelloWorld.java"
ddFile="${descriptor.dir}/webservice/web-services.xml"
serviceUri="/HelloWorld">
<classpath refid="webservice.classpath" />
</source2wsdd>
<echo message ="[Done with buildEar]" />
</target>Did you ever resolve this?
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