Memory Leak in cRIO running RT

I am running 2009 RT on a compact RIO chassis. My very basic VI causes the RIO to reboot which appears to be related to a memory leak. I use the system monitor and can watch the memory usage on the RIO chassis grow very slowly. Attached is the project and the target VI is pretty basic. I even made the modification to close the refence that is opened during the data scan but still have this persistent problem.
Solved!
Go to Solution.
Attachments:
GPM-LT-DAQ.zip ‏566 KB

choff,
There is a way to pass a cluster using a shared variable. I do this all the time. Turn the cluster in question into a type def'd custom control and save in your project. When you create a the shared variable you can select the Data Type. Last thing on list is 'From Custom Control.....'
P.S. If that other post really fixed the memory leak then please mark it as the solution. Somehow I don't think you'll be the last person to run into this problem.

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Hi Timo
Thanks for your reply, I read the thread you pointed to.
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How to configure license file for Memory Leak tool and WL Server 9.2?

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Memory leak in Callable Statement

We are using Weblogic 6.1 and Oracle 8.1.7 for an application we are developing.
Usage of callable statement seems to be resulting an a memory leak. The program runs
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We are unable to figure out a reason for the same.
The code snippet is as below
try
//dbConn = ImportPODBConnect.getDBConnection(dsJNDIName, dsURL); //connect
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hi
This may happen when you open resultset objects and not close them properly.
Try to ensure that, you should close the objects in individual try catch
blocks so that one failure will not cause other close's to be skipped.
You can try one more thing, I don't see you are using any LONG/ LONG
RAW/BLOB/CLOB columns from your code here. If the table which you are trying
to retrieve data from has this type of data you will benefit from using some
tuning parameters here and may be able to avoid out of memory exceptions,
take a look at the url,
http://e-docs.bea.com/wls/docs61/oracle/advanced.html#1158561
especially, try using,
weblobic.oci.selectBlobChunkSize and set it to something low. you can set
these properties on the connection pool.
sree
"Murali" <[email protected]> wrote in message
news:[email protected]...
>
>
We are using Weblogic 6.1 and Oracle 8.1.7 for an application we aredeveloping.
Usage of callable statement seems to be resulting an a memory leak. Theprogram runs
in a loop and after processing 200 records, java.lang.outofMemoryException is thrown
>
We are unable to figure out a reason for the same.
The code snippet is as below
try
//dbConn = ImportPODBConnect.getDBConnection(dsJNDIName, dsURL);//connect
to DB <br>
dbConn = DBConnect.getDBConnection(dsJNDIName, dsURL);
//query = POQueries.selectPO(poId); //getthe required
query statement from the POQueries utility class
Print.log(" in getPO() ----> ********* before 1st stmt " +System.currentTimeMillis());
>
cstmt = dbConn.prepareCall("{ ? = call PO_HEADER_PROC(?)}");
cstmt.registerOutParameter(1, OracleTypes.CURSOR);
cstmt.setFloat(2, poId);
// execute and retrieve the result set
cstmt.execute();
getPORs = (ResultSet)cstmt.getObject(1);
Print.log(" in getPO() ----> ********* after 1st stmt " +System.currentTimeMillis());
>
if (!getPORs.next()) //if nothing returnedthen
throw an exception
Print.log("Unable to get the required PO:" + poId);
throw new Exception("Unable to get the required PO:" + poId);
else //set all thevariables
of the PO header objects from the result set
pohSl = new POHeaderSl();
pohSl.setOvUserName(getPORs.getString("OVA_USER_NAME"));
pohSl.setOvCompanyName(getPORs.getString("OVA_COMPANY_NAME"));
pohSl.setAgent(getPORs.getString("AGENT"));
pohSl.setApprovalCode(getPORs.getString("APPROVAL_CODE"));
pohSl.setBrand(getPORs.getString("BRAND"));
pohSl.setBusinessSegment(getPORs.getString("BUSINESS_SEGMENT"));
pohSl.setBusinessSubSegment(getPORs.getString("BUSINESS_SUB_SEGMENT"));
pohSl.setBuyDate(getPORs.getString("BUY_DATE"));
pohSl.setCareContentLabel(getPORs.getString("CARE_CONTENT_LABEL"));
pohSl.setCartonMarkings1(getPORs.getString("CARTON_MARKINGS_1"));
pohSl.setCartonMarkings2(getPORs.getString("CARTON_MARKINGS_2"));
pohSl.setCartonMarkings3(getPORs.getString("CARTON_MARKINGS_3"));
pohSl.setCartonMarkings4(getPORs.getString("CARTON_MARKINGS_4"));
pohSl.setComments(getPORs.getString("COMMENTS"));
pohSl.setCommissionPerUnit(getPORs.getString("COMMISSION_PER_UNIT"));
pohSl.setCompanyId(getPORs.getString("COMPANY_ID"));
pohSl.setCompulsoryString(getPORs.getString("COMPULSORY_STRING"));
pohSl.setConTimestamp(getPORs.getString("CON_TIMESTAMP"));
pohSl.setCurrency(getPORs.getString("CURRENCY"));
pohSl.setCustomerBillToNumber(getPORs.getString("CUSTOMER_BILL_TO_NUMBER"));
pohSl.setCustomerLcBank(getPORs.getString("CUSTOMER_LC_BANK"));;
pohSl.setCustomerLcDate(getPORs.getString("CUSTOMER_LC_DATE"));
pohSl.setCustomerLcExpiryDate(getPORs.getString("CUSTOMER_LC_EXPIRY_DATE"));
pohSl.setCustomerLcNumber(getPORs.getString("CUSTOMER_LC_NUMBER"));
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pohSl.setCustomerSo(getPORs.getString("CUSTOMER_SO"));
pohSl.setDateLastModifiedErp(getPORs.getString("DATE_LAST_MODIFIED_ERP"));
pohSl.setDateLastModifiedOv(getPORs.getString("DATE_LAST_MODIFIED_OV"));
pohSl.setDateOfActivation(getPORs.getString("DATE_OF_ACTIVATION"));
Print.log(" ******** inside getPO() ----- > ****** built Header" +System.currentTimeMillis()
if(getPORs != null)
getPORs.close();
getPORs = null;
if(cstmt != null)
Print.log("In the close");
cstmt.close();
cstmt = null;
catch (Exception e)
System.out.println(" in dataAccess.getPO() ----- > " + e.toString());
throw new Exception(e.toString()); //if there are anyexceptions
then throw back the exceptions
finally //finally block to release anyconnections
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if(getPORs != null)
getPORs.close();
getPORs = null;
if (pstmt!=null)
pstmt.close();
pstmt = null;
if (cstmt!=null)
cstmt.close();
cstmt = null;
if (dbConn!=null)
dbConn.close();
dbConn = null;
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Can anyone help with this?

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Hello,
We have developed a website using Bea Portal 8.1 sp3. In testing we have observed severe memory leaking problems which occur also in the production environment where WebLogic is not being run in debug mode. The troubleshooting was started by profiling the testing environment (running in debug mode) using JProfiler. The leak was isolated to occur especially in control method invocation via InvocationHandler call. The object being leaked was character array. After further study we noticed that the method call which this framework InvocationHandler was delegating had especially large return value. Namely a map consisting of ~5Mb of content. After reviewing our own code for possible leak source and coming up with nothing obviously wrong we started to suspect that something was leaking memory in the WebLogic framework code. As the leaked object was character array we suspected that the framework was calling toString() method of the return value and the string was never released. To prove this we constructed a small test program which just demonstrated passing large object as arguments and return values in invocations to WebLogic Workshop control from page flow. The memory consumption in WebLogic monitor and console output proved that indeed the toString() method was invoked 1 times in invocation per argument and 2 times per return value. Furthermore by returning empty string in one test and string of several megabytes in other from toString() one could observe exactly matching memory leaking. Manual running of the garbage collector did not release the memory.
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best regards,
Tommi Laukkanen / WM-data Finland / Digital Media (tommi.laukkanen at wmdata.fi or tommi.laukkanen at xiiris.com)
Artti Jaakkola / WM-data Finland / Digital Media (artti.jaakkola at wmdata.fi)
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at com.bea.wlw.netui.pageflow.FlowController.getActionMethodForward(FlowController.java:1433)
at com.bea.wlw.netui.pageflow.FlowController.internalExecute(FlowController.java:764)
at com.bea.wlw.netui.pageflow.PageFlowController.internalExecute(PageFlowController.java:211)
at com.bea.wlw.netui.pageflow.FlowController.execute(FlowController.java:594)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(PageFlowRequestProcessor.java:650)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(AutoRegisterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(PageFlowActionServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:996)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.bea.p13n.servlets.PortalServletFilter.doFilter(PortalServletFilter.java:351)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:316)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.superForward(PageFlowRequestProcessor.java:1301)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor$DefaultHttpRedirector.forward(PageFlowRequestProcessor.ja
va:1317)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.doForward(PageFlowRequestProcessor.java:1199)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(PageFlowRequestProcessor.java:637)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(AutoRegisterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(PageFlowActionServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:996)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.bea.p13n.servlets.PortalServletFilter.doFilter(PortalServletFilter.java:351)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6458)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3661)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2630)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
java.lang.Exception
at Test.ControlTest.TestControlImpl$TestContainer.toString(TestControlImpl.jcs:43)
at java.lang.String.valueOf(String.java:2131)
at java.lang.StringBuffer.append(StringBuffer.java:370)
at com.bea.wlw.runtime.core.context.WlwThreadContext.logInvoke(WlwThreadContext.java:363) <---------------------
at com.bea.wlw.runtime.core.context.WlwThreadContext.startInvocation(WlwThreadContext.java:608)
at com.bea.wlw.runtime.core.container.Invocable.invoke(Invocable.java:414)
at com.bea.wlw.runtime.core.container.Invocable.invoke(Invocable.java:396)
at com.bea.wlw.runtime.core.container.Invocable.invoke(Invocable.java:248)
at com.bea.wlw.runtime.jcs.container.JcsContainer.invoke(JcsContainer.java:84)
at com.bea.wlw.runtime.core.bean.BaseContainerBean.invokeBase(BaseContainerBean.java:198)
at com.bea.wlw.runtime.core.bean.SLSBContainerBean.invoke(SLSBContainerBean.java:103)
at com.bea.wlwgen.StatelessContainer_ly05hg_ELOImpl.invoke(StatelessContainer_ly05hg_ELOImpl.java:99)
at com.bea.wlwgen.GenericStatelessSLSBContAdpt.invokeOnBean(GenericStatelessSLSBContAdpt.java:62)
at com.bea.wlw.runtime.core.bean.BaseDispatcherBean.runAsInvoke(BaseDispatcherBean.java:153)
at com.bea.wlw.runtime.core.bean.BaseDispatcherBean.invoke(BaseDispatcherBean.java:54)
at com.bea.wlw.runtime.core.bean.SyncDispatcherBean.invoke(SyncDispatcherBean.java:160)
at com.bea.wlw.runtime.core.bean.SyncDispatcher_k1mrl8_EOImpl.invoke(SyncDispatcher_k1mrl8_EOImpl.java:100)
at com.bea.wlw.runtime.core.dispatcher.Dispatcher.remoteDispatch(Dispatcher.java:161)
at com.bea.wlw.runtime.core.dispatcher.ServiceHandleImpl.invoke(ServiceHandleImpl.java:436)
at com.bea.wlw.runtime.core.dispatcher.WlwProxyImpl._invoke(WlwProxyImpl.java:326)
at com.bea.wlw.runtime.core.dispatcher.WlwProxyImpl.invoke(WlwProxyImpl.java:315)
at $Proxy19.testMethod2(Unknown Source)
at Test.ControlTest.ControlTestController.begin(ControlTestController.jpf:59)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.bea.wlw.netui.pageflow.FlowController.invokeActionMethod(FlowController.java:1507)
at com.bea.wlw.netui.pageflow.FlowController.getActionMethodForward(FlowController.java:1433)
at com.bea.wlw.netui.pageflow.FlowController.internalExecute(FlowController.java:764)
at com.bea.wlw.netui.pageflow.PageFlowController.internalExecute(PageFlowController.java:211)
at com.bea.wlw.netui.pageflow.FlowController.execute(FlowController.java:594)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(PageFlowRequestProcessor.java:650)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(AutoRegisterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(PageFlowActionServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:996)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.bea.p13n.servlets.PortalServletFilter.doFilter(PortalServletFilter.java:351)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:316)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.superForward(PageFlowRequestProcessor.java:1301)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor$DefaultHttpRedirector.forward(PageFlowRequestProcessor.ja
va:1317)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.doForward(PageFlowRequestProcessor.java:1199)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(PageFlowRequestProcessor.java:637)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(AutoRegisterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(PageFlowActionServlet.java:152)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:996)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.bea.p13n.servlets.PortalServletFilter.doFilter(PortalServletFilter.java:351)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6458)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3661)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2630)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
Message was edited by:
tlaukkan
Message was edited by:
tlaukkan
Message was edited by:
tlaukkan

Hi
I did not find any known issues on this. But since you can replicate the issue, could you please contact BEA Support and open a case and have this followed?
Since we may have to do some testing/profiling etc with different service packs with your sample, it would be better to follow up via a support case.
Thanks
Vimala

Memory leaks of KeepAliveCache in special circumstances

Hi,
    In a production environment encountered a memory leak problem after running over 200 days, and i found KeepAliveCache.java will produce memory leaks if it create native thread failed.
    I think if keepAliveTimer.start() failed, java.lang.Thread object was not destory and can not collection by GC.
java.security.AccessController.doPrivileged(
   new java.security.PrivilegedAction<Void>() {
   public Void run() {
      // We want to create the Keep-Alive-Timer in the
       // system threadgroup
       ThreadGroup grp = Thread.currentThread().getThreadGroup();
       ThreadGroup parent = null;
       while ((parent = grp.getParent()) != null) {
           grp = parent;
       keepAliveTimer = new Thread(grp, cache, "Keep-Alive-Timer");
       keepAliveTimer.setDaemon(true);
       keepAliveTimer.setPriority(Thread.MAX_PRIORITY - 2);
       // Set the context class loader to null in order to avoid
       // keeping a strong reference to an application classloader.
       keepAliveTimer.setContextClassLoader(null);
       keepAliveTimer.start();
       return null;
we found the top 10 objects used memory are as follows
num     #instances         #bytes class name
   1:       2287176      256163712 java.lang.Thread
   2:       3200649      197768504 [C
   3:       2378720      190314944 [Ljava.lang.ThreadLocal$ThreadLocalMap$Entry;
   4:        182033       90707352 [Ljava.lang.Object;
   5:       2382405       76236960 java.lang.ThreadLocal$ThreadLocalMap$Entry
   6:       2378720       57089280 java.lang.ThreadLocal$ThreadLocalMap
   7:       2286842       54884208 java.security.AccessControlContext
   8:        212233       28031904 <constMethodKlass>
   9:        902205       21652920 java.lang.String
10:       2424218       19393744 java.lang.Object
But there are not so many threads in the thread dump, and we found many error log as following:
07:43:21.748 ERROR WebContainerAdvertiserThread ? **.webcontainer.advertiser.startup.WebContainerAdvertiserThread advertise WebContainerAdvertiserThread.java 105
Exception Occured when advertising WebContainer Details
java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:640)
at sun.net.www.http.KeepAliveCache$1.run(KeepAliveCache.java:89)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.http.KeepAliveCache.put(KeepAliveCache.java:75)
at sun.net.www.http.HttpClient.putInKeepAliveCache(HttpClient.java:370)
at sun.net.www.http.HttpClient.finished(HttpClient.java:358)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1393)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:379)
Java(TM) SE Runtime Environment (build 1.6.0_25-b06)
SUSE Linux Enterprise Server 10.3
Regards

Hi there..
I'll just answer you what I know..
This code below is when you write your JNI using C++
// this is how to access a java String
const char *strZ = env->GetStringUTFChars(
rs( xlzMessage, 0 );
// this is how to let go of java String
env->ReleaseStringUTFChars( xlzMessage, strZ);     This code below is used when you write your JNI using C
   (*env)->ReleaseStringUTFChars(env, <jstring>,
<char*>);Is this the same as what I have above? If not, what's
the difference?
2. The function has a second jstring argument, ticker,
that is not used (bad style, I know, but I didn't
write the code). Is it necessary to free the memory
for that jstring as well even though I don't use it?If you actually called to GetStringUTFChars successfully, I believed that memory will be allocated and hence, you should call ReleaseUTFChars to deallocate it.
Hope it helps :)

Detecting a memory leak in a process running on Solaris 5.7

Hi,
Iam running my application on solaris 5.7 platform.
I can see clear memory leak in that process.
Is there any tool or in-built functionality on solaris 5.7 to detect/fix that leak.
Thanks in advance,
Avvaru

Thanks for the reply. I already turned it off in both Safari and Spotlight preferences. However the problem persists. The process still runs, and from time to time it decides to leak all the memory as well. I really can't understand what the reason might be.
To be clear, in Safari-->Preferences-->Search-->Smart search field-->"Include Spotlight Suggestions" is un-checked. In Spotlight preferences all three "Spotlight Suggestions", "Bookmarks & History" and "Bing Web Searches" are un-checked. Process still runs under Spotlight as can be seen here:
After the last post I let it run for a while when it happened again, and below is just before i terminated it. Look at the memory usage!

Memory Leak when running Contacts

I am having a big memory leak when running the app Contacts on a MB Air. It gobbles up 2 GB of ram in just a few minutes forcing a reboot. I have re-installed Mountain Lion 10.8.2 and it still leaks memory. Watching Activity Monitor shows the rapid increase in Ram being gobbled up by Contacts. Used Mackeeper to clear cache as well as ran Cocktail, all to no avail. Any tips would be greatly appreciated.

The size of oracle.exe is not an indication of how the Java VM GC works; so you are not comparing apples to apples. It'll be too long to explain here but in my upcoming book (see hereafter), I gave a detailled explanation of the various memory areas the Java VM uses and how these are GCed and also how you can meausre their size (not all, though).
In short you want to use OracleRuntime methods such as
OracleRuntime.getSessionSize(); --> get he current size of Sessionspace
OracleRuntime.getNewspaceSize(); --> get he current size of Newspace
there are other memory areas described in the book
http://www.oracle.com/technology/pub/articles/mensah_dws.html
http://www.elsevier.com/wps/find/bookdescription.cws_home/706089/description#description
Sample chapter: http://www.oracle.com/technology/books/pdfs/mensah_ch1.pdf
Kuassi

Memory leak when running in database

I am somewhat new to java and very new to java in the db. I just ran into a problem with what appears to be a memory leak. I have a substantial java program used to parse XML files. I developed this app in jDeveloper and for testing purposes created a method that would connect to the database so that I could run the app from jDeveloper instead of having to deploy it everytime i needed to run it. When deployed the application uses the existing connection to connect to the db.
I am running Oracle 9i on a windows 2k machine.
When I run the application through jDeveloper the javaw.exe process takes up roughly 20mb of RAM and doesn't increase. I also watched the oracle.exe process and there was little to no increase in the RAM that it was using.
When deployed to a db and run through a java stored procedure the RAM used by the oracle.exe process sky rockets, jumping from 70mb to 139mb at about 2mb per second.
Hopefully this will make some sense to someone as posting code would be somewhat difficult considering the size of the project. Is there something I'm missing? I've tried calling the garbage collector explicity but it has had no effect. I have made sure that all my cursors, statements, resultsets are closing. I have a number of Vecotors which are all being de-allocated(as far as i can tell). Are there any known issues with the garbage collector in a 9i DB?
Thanks
Butch Wesley

The size of oracle.exe is not an indication of how the Java VM GC works; so you are not comparing apples to apples. It'll be too long to explain here but in my upcoming book (see hereafter), I gave a detailled explanation of the various memory areas the Java VM uses and how these are GCed and also how you can meausre their size (not all, though).
In short you want to use OracleRuntime methods such as
OracleRuntime.getSessionSize(); --> get he current size of Sessionspace
OracleRuntime.getNewspaceSize(); --> get he current size of Newspace
there are other memory areas described in the book
http://www.oracle.com/technology/pub/articles/mensah_dws.html
http://www.elsevier.com/wps/find/bookdescription.cws_home/706089/description#description
Sample chapter: http://www.oracle.com/technology/books/pdfs/mensah_ch1.pdf
Kuassi

How to determine memory leaks?

I tried in XCODE, the RUN/ Start with Performance TOol / and tried out the various options. I was running my app and looking to see if it would report increasing memory use but it seemed to be looking at my total system (i was running under the simulator). In general what is the recommended procedure for determining memory leaks, which tool to use, and what tracing can i use?
How does one look at the retain count of an object? are there system routines that have knonw leaks?

You took the right path. Once instruments comes up select the Leaks tool. Turn off automatic leak detection. In your app, start off at some known state, do something, and come back to the known state and check for leaks. For instance start off in a view, do something that brings up another view then come back to the original view and check for leaks. Leaks will show you if you leaked. Since you took a very deterministic path then checked it should be straight forward to go to the code and find / fix the leaks. Leaks shows you where the code where the leak was generated.

Memory leak in JSpinner implementation (maybe others?)

Hi,
I am developing an application using Java and Swing, and have run into some problems with memory leaks. After examining the source code and making an example program (provided below), I can only come to the conclusion that there is a bug in the implementation of JSpinner in Sun Java 1.6.0_03.
If one uses a custom model with the JSpinner, it attaches itself as a listener to the model. However, it never removes the listening connection, even if the model is changed. This causes the JSpinner to be kept in memory as long as the model exists, even if all other references to the component have been removed.
An example program is available at http://eddie.dy.fi/~sampo/ModelTest.java . It is a simple swing program that has the JSpinner and two buttons, the first of which writes to stdout the listeners of the original model and the second changes the spinner model to a newly-created model. A sample output is below:
Running on 1.6.0_03 from Sun Microsystems Inc.
Listeners before connecting to JSpinner:
Model value is 0, 0 listeners connected:
Listeners after connecting to JSpinner:
Model value is 0, 2 listeners connected:
1: interface javax.swing.event.ChangeListener
2: javax.swing.JSpinner$ModelListener@9971ad
Listeners now:
Model value is 8, 2 listeners connected:
1: interface javax.swing.event.ChangeListener
2: javax.swing.JSpinner$ModelListener@9971ad
Changing spinner model.
Listeners now:
Model value is 8, 2 listeners connected:
1: interface javax.swing.event.ChangeListener
2: javax.swing.JSpinner$ModelListener@9971adThis shows that even though the model of the JSpinner has been changed, it still listens to the original model. I haven't looked at other components whether they retain connections to the old models as well.
In my case, I have an adaptor-model which provides a SpinnerModel interface to the actual data. The adaptor is implemented so that it listens to the underlying model only when it itself is being listened to. If the JComponents using the model were to remove the listening connections, it, too, would be automatically garbage-collected. However, since JSpinner does not remove the connections, the adaptor also continues to listen to the underlying model, and neither can be garbage-collected.
All in all, the listener-connections seem to be a very easy place to make memory leaks in Java and especially in Swing. However, as I see it, it would be a simple matter to make everything work automatically with one simple rule: Listen to the models only when necessary.
If a component is hidden (or alternatively has no contact to a parent JFrame or equivalent), it does not need to listen to the model and should remove the connections. When the component is again set visible (or connected to a frame) it can re-add the connections and re-read the current model values just as it does when initializing the component. Similarly, any adaptor-models should listen to the underlying model only when it itself is being listened to.
If the components were implemented in this way, one could simply remove a component from the frame and throw it away, and automatically any listener-connections will be removed and it can be garbage-collected. Similarly any adaptor-models are collected when they are no longer in use.
Changing the API implementation in this way would not require any changes to applications, as the only thing that changes are the listener-connections. Currently used separate connection-removing methods should still work, though they would be unnecessary any more. The API would look exactly the same from the view of an application programmer, only that she would not need to care about remnant listening connections. (As far as I can tell, the current API specification would allow the API to be implemented as described above, but it should of course require it to be implemented in such a way.)
Am I missing something, or is there some valid reason why the API is not implemented like this?
PS. I'm new to these forums, so if there is a better place to post these reports, please tell me. Thanks.

Another cognition: It's the following code, that causes the memory to be accumulated:
obj = m_orb.resolve_initial_references("NameService");
ctx = NamingContextExtHelper.narrow(obj);For the first 4 calls to this code the memory usage of the nameservice is unchanged. From the 5th to the 8th call, it's increased by approx. 10KB per call. And thenceforward (beginning with the 9th call) it's increasing by approx. 10MB.
What's going wrong here?

Memory Leaks   Unresponsive Mouse

2009 8 core Mac Pro w/ 24 GB of RAM, ATI Radeon 4870, and a SeriTek PCIe eSATA card (card only has drives connected when running a manual drive clone). When running Toast 10 or Parallels 9, my RAM will fill up (I use a program called Menu Meters to monitor stuff). This machine worked just fine under OS 10.9 and earlier - no issues like this at all. ClamXAV will also completely fill the RAM up (the meter will be full green, instead of part green, then mostly grey when Toast or Parallels fills it up). I have to use Terminal to purge it so that the machine is usable.
The other thing that happens is that sometimes when the computer wakes up or I am in the middle of doing something, the mouse will still move, but the dock will not pop open and the left button the mouse doesn't respond. The right button will open the right click menu, but will not respond normally at all. I have tried a different Magic Mouse, but the problem is the same.
I thought that it may be a problem with the factory RAM and the Kingston RAM not playing nicely together. So I ran it with just the factory 8 GB and then ran it with the Kingston 16 GB - the problem persists no matter which RAM is installed. All of the RAM also passes the memory tests in Rember and TechTool.
So, I need to find out if someone thinks that maybe the bluetooth module may be going bad causing the mouse issues. I also need to find out what is causing the memory leaks. I followed the steps that someone gave on this site to boot into safe mode, repair permissions, reset PRAM, then reset SMC (or the other way around - I did it like they said to). It did nothing to fix the problem.
I need some guidance here. As I stated early on, the machine worked perfectly with OS 10.9. I have WAY too much software that I use, so doing a completely fresh install is out of the question - I don't have time to reload everything. This problem is annoying and I know that I am not the only one having these issues. Any input will be greatly appreciated. Thanks in advance.

Here is the EtreCheck report:
Problem description:
Memory leaks when using Toast 10 or Parallels 9. Mouse also become unresponsive (it will move, but left button does not work and dock will not pop open - mouse problem happens independent of the RAM being filled up - different mouse was tried with same result).
EtreCheck version: 2.1.5 (108)
Report generated January 9, 2015 at 9:20:59 PM MST
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
    Mac Pro (Early 2009) (Verified)
    Mac Pro - model: MacPro4,1
    2 2.26 GHz Quad-Core Intel Xeon CPU: 8-core
    24 GB RAM Upgradeable
        DIMM 1
            4 GB DDR3 ECC 1066 MHz ok
        DIMM 2
            4 GB DDR3 ECC 1066 MHz ok
        DIMM 3
            2 GB DDR3 ECC 1066 MHz ok
        DIMM 4
            2 GB DDR3 ECC 1066 MHz ok
        DIMM 5
            4 GB DDR3 ECC 1066 MHz ok
        DIMM 6
            4 GB DDR3 ECC 1066 MHz ok
        DIMM 7
            2 GB DDR3 ECC 1066 MHz ok
        DIMM 8
            2 GB DDR3 ECC 1066 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless: en2: 802.11 a/b/g/n
Video Information: ℹ️
    ATI Radeon HD 4870 - VRAM: 512 MB
        AL2216W 1680 x 1050 @ 60 Hz
System Software: ℹ️
    OS X 10.10.1 (14B25) - Uptime: 2:4:35
Disk Information: ℹ️
    HL-DT-ST BD-RE WH12LS39
    HL-DT-ST DVDRAM GH24NS90
    SAMSUNG HD103SJ disk1 : (1 TB)
        EFI (disk1s1) <not mounted> : 210 MB
        OS 10.10.1 (disk1s2) / : 999.35 GB (410.30 GB free)
        Recovery HD (disk1s3) <not mounted> [Recovery]: 650 MB
    SAMSUNG HD103SJ disk2 : (1 TB)
        EFI (disk2s1) <not mounted> : 210 MB
        Extra Storage (disk2s2) /Volumes/Extra Storage : 999.86 GB (554.20 GB free)
    SAMSUNG HD103SJ disk3 : (1 TB)
        EFI (disk3s1) <not mounted> : 210 MB
        Extra Storage 2 - Scratch (disk3s2) /Volumes/Extra Storage 2 - Scratch : 999.86 GB (39.54 GB free)
    WDC WD5001AALS-00LWTA0 disk0 : (500.11 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        BOOTCAMP (disk0s2) /Volumes/BOOTCAMP : 499.90 GB (275.71 GB free)
USB Information: ℹ️
    Shuttle Technology Inc. E-USB Bridge
    Sony C6606
    Apple, Inc. Keyboard Hub
        Apple Inc. Apple Keyboard
    Apple Inc. BRCM2046 Hub
        Apple Inc. Bluetooth USB Host Controller
Firewire Information: ℹ️
    Apple Computer, Inc. iSight 200mbit - 400mbit max
Gatekeeper: ℹ️
    Anywhere
Kernel Extensions: ℹ️
        /Applications/Hotspot Shield.app
    [not loaded]    com.anchorfree.tun (1.0) [Support]
        /Applications/Parallels Desktop.app
    [not loaded]    com.parallels.kext.hidhook (9.0 24251.1052177) [Support]
    [not loaded]    com.parallels.kext.hypervisor (9.0 24251.1052177) [Support]
    [not loaded]    com.parallels.kext.netbridge (9.0 24251.1052177) [Support]
    [not loaded]    com.parallels.kext.usbconnect (9.0 24251.1052177) [Support]
    [not loaded]    com.parallels.kext.vnic (9.0 24251.1052177) [Support]
        /Applications/TechTool Deluxe.app
    [not loaded]    com.micromat.iokit.ttpatadriver (5.0.0) [Support]
    [not loaded]    com.micromat.iokit.ttpfwdriver (5.0.0) [Support]
        /Applications/TechTool Protogo/Protogo Applications/TechTool Pro 7.app
    [not loaded]    com.micromat.driver.spdKernel (1 - SDK 10.8) [Support]
    [not loaded]    com.micromat.driver.spdKernel-10-8 (1 - SDK 10.8) [Support]
        /Applications/Temperature Monitor 4.94/Temperature Monitor 4.94.app
    [not loaded]    com.bresink.driver.BRESINKx86Monitoring (8.0) [Support]
        /Applications/Toast 11 Titanium/Spin Doctor.app
    [not loaded]    com.hzsystems.terminus.driver (4) [Support]
        /Applications/Toast 7 Titanium/Toast Titanium.app
    [not loaded]    com.roxio.TDIXController (1.6) [Support]
        /Library/Extensions
    [loaded]    at.obdev.nke.LittleSnitch (4216 - SDK 10.8) [Support]
        /System/Library/Extensions
    [loaded]    com.SiliconImage.driver.Si3132 (1.2.5) [Support]
    [not loaded]    com.devguru.driver.SamsungComposite (1.2.63 - SDK 10.6) [Support]
    [not loaded]    com.microsoft.driver.MicrosoftMouse (8.2) [Support]
    [not loaded]    com.roxio.BluRaySupport (1.1.6) [Support]
        /System/Library/Extensions/MicrosoftMouse.kext/Contents/PlugIns
    [not loaded]    com.microsoft.driver.MicrosoftMouseBluetooth (8.2) [Support]
    [not loaded]    com.microsoft.driver.MicrosoftMouseUSB (8.2) [Support]
        /System/Library/Extensions/ssuddrv.kext/Contents/PlugIns
    [not loaded]    com.devguru.driver.SamsungACMControl (1.2.63 - SDK 10.6) [Support]
    [not loaded]    com.devguru.driver.SamsungACMData (1.2.63 - SDK 10.6) [Support]
    [not loaded]    com.devguru.driver.SamsungMTP (1.2.63 - SDK 10.5) [Support]
    [not loaded]    com.devguru.driver.SamsungSerial (1.2.63 - SDK 10.6) [Support]
Startup Items: ℹ️
    HP IO: Path: /Library/StartupItems/HP IO
    SiCoreService: Path: /Library/StartupItems/SiCoreService
    Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
    [running]    at.obdev.LittleSnitchUIAgent.plist [Support]
    [loaded]    com.coupons.coupond.plist [Support]
    [running]    com.micromat.TechToolProAgent.plist [Support]
    [loaded]    com.oracle.java.Java-Updater.plist [Support]
    [invalid?]    com.parallels.mobile.prl_deskctl_agent.launchagent.plist [Support]
    [invalid?]    com.parallels.mobile.startgui.launchagent.plist [Support]
    [not loaded]    com.teamviewer.teamviewer.plist [Support]
    [not loaded]    com.teamviewer.teamviewer_desktop.plist [Support]
Launch Daemons: ℹ️
    [running]    at.obdev.littlesnitchd.plist [Support]
    [loaded]    com.adobe.fpsaud.plist [Support]
    [loaded]    com.bombich.ccc.plist [Support]
    [loaded]    com.hp.lightscribe.plist [Support]
    [running]    com.micromat.TechToolProDaemon.plist [Support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Support]
    [loaded]    com.oracle.java.Helper-Tool.plist [Support]
    [invalid?]    com.parallels.mobile.dispatcher.launchdaemon.plist [Support]
    [failed]    com.parallels.mobile.kextloader.launchdaemon.plist [Support] [Details]
    [not loaded]    com.teamviewer.teamviewer_service.plist [Support]
User Launch Agents: ℹ️
    [loaded]    com.facebook.videochat.[redacted].plist [Support]
    [loaded]    com.google.keystone.agent.plist [Support]
    [running]    com.nchsoftware.expressinvoice.agent.plist [Support]
    [loaded]    uk.co.markallan.clamxav.clamscan.plist [Support]
    [loaded]    uk.co.markallan.clamxav.freshclam.plist [Support]
User Login Items: ℹ️
    iTunesHelper    Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    SMARTReporter    Application (/Applications/SMARTReporter/SMARTReporter.app)
    BetterSnapTool    Application (/Applications/BetterSnapTool.app)
    smcFanControl    Application (/Applications/smcfancontrol_2_2_2/smcFanControl.app)
    Android File Transfer Agent    Application (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
Internet Plug-ins: ℹ️
    JavaAppletPlugin: Version: Java 8 Update 25 Check version
    FlashPlayer-10.6: Version: 16.0.0.235 - SDK 10.6 [Support]
    Default Browser: Version: 600 - SDK 10.10
    AdobePDFViewerNPAPI: Version: 11.0.06 - SDK 10.6 [Support]
    CouponPrinter-FireFox_v2: Version: 5.0.3 - SDK 10.6 [Support]
    AdobePDFViewer: Version: 11.0.06 - SDK 10.6 [Support]
    Flash Player: Version: 16.0.0.235 - SDK 10.6 [Support]
    QuickTime Plugin: Version: 7.7.3
    SharePointBrowserPlugin: Version: 14.4.6 - SDK 10.6 [Support]
    iPhotoPhotocast: Version: 7.0 - SDK 10.8
Safari Extensions: ℹ️
    AdBlock [Installed]
    F.B. Purity - Cleans Up Facebook [Installed]
    OpenIE [Installed]
3rd Party Preference Panes: ℹ️
    Déjà Vu [Support]
    Flash Player [Support]
    FUSE for OS X (OSXFUSE) [Support]
    Java [Support]
    MacFUSE [Support]
    MenuMeters [Support]
    Microsoft Mouse [Support]
    MouseLocator [Support]
    NTFS-3G [Support]
    TechTool Protection [Support]
Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
        48%    plugin-container
        39%    fontd
         6%    firefox
         5%    WindowServer
         4%    bluetoothaudiod
Top Processes by Memory: ℹ️
    928 MB    firefox
    412 MB    plugin-container
    258 MB    mds_stores
    180 MB    iTunes
    129 MB    Finder
Virtual Memory Information: ℹ️
    19.38 GB    Free RAM
    3.11 GB    Active RAM
    1.88 GB    Inactive RAM
    1.38 GB    Wired RAM
    2.40 GB    Page-ins
    0 B    Page-outs
Diagnostics Information: ℹ️
    Jan 9, 2015, 07:16:57 PM    Self test - passed
    Jan 8, 2015, 11:37:48 AM    /Library/Logs/DiagnosticReports/ClamXav_2015-01-08-113748_[redacted].cpu_resour ce.diag [Details]
    Jan 8, 2015, 11:21:46 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Preview_2015-01-08-112146_[red acted].crash

T61 with memory leak on XP for driver battc.sys

Hi
I have an issue with XP where the battc.sys module that is part of Windows XP and responsible for the kernel side of monitoring the battery status. This module continually leaks memory until I have no more kernel paged resources left and programs start to fail on my laptop.
I raised a support case for this with Microsoft and after some investigation and upgrading to the latest T61 power drivers that were released a few days ago on the Lenovo site, MS support told me it is a fault of the T61 and that I would need to disable Microsoft APCI support to stop this memory leak from occuring and to take the issue up with Lenovo.
I have used the verifier tool to confirm that it is the Windows XP SP3 battc.sys memory module leaking.
I am running the latest T61 drivers and fully patch with MS drivers on SP3.
As MS have told me it is the fault of the T61 I am posting this issue here.
Thanks
Stephen

It is memory available to the kernelwhich itself does not show under a process in task manager as far as I am aware (unles it is taken account as part of the system process).
The best way to measure the available kernel memory space available is by using sysinternals procexp.
You need to download procexp and also install the windows debugging tools from Microsoft. Then in procexp set the "Options > Configure Symbols : Debughlp.dll path" to the new debughlp.dll installed with your debu tools and set the symbols path to srv*c:\Symbols*http://msdl.microsoft.com/download/symbols
Then you can choose in procexp "View > System Information" and see the used and total paged and non-paged kernel memory space.
poolmon helps monitor all the symbols that are taking up this memory and verifier lets you drill down to the exact module and the changes in memory for a module that is occuring.
Here are two really good links on it
http://blogs.msdn.com/ntdebugging/archive/2006/12/18/Understanding-Pool-Consumption-and-Event-ID_3A0...
http://blogs.msdn.com/ntdebugging/archive/2008/05/08/tracking-down-mmst-paged-pool-usage.aspx
In my poolmon i notice that Mmst and battc are taking alot of memory after my computer has been running for some time. Mmst being high is normal but battc should not continually be growing as it is which is why I raised the case to MS but they want verification it is not a Lenovo issue.

How do I report a major memory leak problem with Firefox 3.6.10 in WinXP?

After I installed Firefox 3.6.9 on a WinXP desktop, I occasionally had minor memory leak problems, reflected by getting "out of virtual memory" messages. I upgraded to 3.6.10 when notified that it was available and that it supposedly fixed stability problems. Ever since then, whenever I use Firefox, it starts out quick as a flash, but very rapidly slows down to a crawl, and has twice brought my system to a halt. IE does not cause this, nor any other program I use, but the execution speed of all programs slows as badly as Firefox. If I knew where to get older versions, I would back up to 3.6.9 or earlier. The situation now prevents me from using Firefox much at all.

Im running windows 7, Firefox 3.6.10 and before i updated to 3.6.10 my CPU never went above 10% with Firefox open. Now it can spike well above 50% and i have nothing different from when i had 3.6.9 to now when i have 3.6.10.
There is no evidence for me to suggest one of the additions i have is causing it, its all pointing to Firefox itself and the last update.

How can I address a memory leak problem with Firefox?

I have happily used Firefox for the past 7 years, and have rarely had difficulties. However, I am having some trouble now; Firefox (running 3.6.6) seems to have a memory leak on my machine. It's slower than what was discussed in other forum posts, but it still scales up slowly to multiple hundred MBs of Memory with very little CPU usage.
I have tried disabling add-ons and extensions, but this does not stop the problem. I have cleared my cache and other stored data, but that also does not help. Has anyone experienced a similar problem that might be able to help?
== This happened ==
Every time Firefox opened
== within last two weeks

Hi reble0708,
I have Java console disabled on my Firefox browser.Everything is working fine for me. There maybe other problem on your browser which is making PDF document faded and blurry. Can you post the link where you found the problem viewing the PDF document?
Btw, you can go to ftp://ftp.mozilla.org/pub/firefox/releases/ and select the previous version of Firefox from the given options. There's no need to uninstall Firefox before you downgrade to the previous version of it.But before new installation, backup your Firefox profile folder.
edit: replaced random unofficial download site link.

Memory Leak in cRIO running RT

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