[b]Keep getting java.lang.OutOfMemoryError.....SOMEONE HELP!!!![/b][/b]

I am currently writing code for a database software using Joins, Collections, Vectors, etc. and when running the code I keep getting a java.lang.OutOfMemoryError. The thing is that I have a parser that parses through different XML files and Java files. It seems as though some of my collections need more space or something else doesn't have enough memory for the parser to pick up everything. It only happens after I add a new constrainable or selectable to the XML file and try and run Queries with that (at least that is where I think the problem is). At this point I have no clue as to what is going on. Could someone please help me out.
Thanks in Advance!

i got that once, i did not close() connections/or I opened too many
i found out 700 is too many the hard way.

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Hi Experts,
When we update our application which is an heavy EAR file we get the following errors in the logs. But the same applications works well when we deploy it for the first few times why is this happening we have enough space in RAM still we get this error and when we restart our server it again works for sometime.
ServletContext@16428923[app:jccrbxt module:jccrbxt path:/jccrbxt spec-version:null]] Root cause of ServletException.
java.lang.OutOfMemoryError: PermGen space
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Thanks

Hi,
Now as you can see that you are getting *"java.lang.OutOfMemoryError: PermGen space"* during the activation on an application it means that you are application needs more space in the non-heap part of the JVM which is PermGen to create the Classes, Class Structures, Methods and Reflection Objects of this applications hence you are getting this issue.
Now how to solve this issue you try the following check list which would help you resolve this issue and overcome same type of issue in future
Point-1). Make Sure that the PermGen Area is not set to a very less value.
Point-2). Usually if an Application has Many JSP Pages in that case every JSP will be converted to a *.class file before JSP Request Process. So a large number of JSPs causes generation of a Large number of *.class files all these classes gets loaded in the PermGen area.
Point-3). While allocating the -XX:MaxPermSize make sure that you follow a rough Formula… which works in most of the Application Servers.
MaxPermSize = (Xmx/3) —- Very Special Cases (One Third of maximum Heap Size)
MaxPermSize = (Xmx/4) —- Recommended (One Fourth Of maximum Heap Size
To get more information on this I would suggest you to have look at the below link which would surely help you in this case
Topic: OutOfMemory Causes and First Aid Steps?
http://middlewaremagic.com/weblogic/?p=4464
Regards,
Ravish Mody

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Hi All
here my java class trying to read a txt file(which is having size of 60MB).and putting each line into a Vector class. problem is ,upto certain number of line it is reading properly and putting into vector..after that it is giving error like Exception in thread "main" java.lang.OutOfMemoryError..what is the problem and how to rectify this one..anybody help me on this.
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Theres a number of ways you can improve your memory usage:
1) Build you map as you read in your file.
2) Use StringBuffers in your map - do not use "asshaj" + "ashaskj" This is very memory intensive
If you still run out of memory try running the JVM using -Xms128m -Xmx512m or higher

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Hi Jennifer,
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Thanks,
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Error Details :
500
Root cause:
java.lang.outofmemoryerror: Java heap space
javax.servlet.servletException: Root Cause:
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Message was edited by:
VenkateshSampoornam

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com.apple.iokit.IOCDStorageFamily          1.6.1
com.apple.driver.AppleFileSystemDriver          2.0
com.apple.driver.XsanFilter          402.1
com.apple.iokit.IOAHCISerialATAPI          1.2.6
com.apple.iokit.IOSCSIArchitectureModelFamily          2.6.8
com.apple.iokit.IOFireWireFamily          4.2.6
com.apple.iokit.IOUSBUserClient          4.2.4
com.apple.iokit.IONetworkingFamily          1.10
com.apple.iokit.IOAHCIFamily          2.0.6
com.apple.iokit.IOUSBFamily          4.2.4
com.apple.driver.AppleEFIRuntime          1.4.0
com.apple.iokit.IOHIDFamily          1.6.6
com.apple.iokit.IOSMBusFamily          1.1
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          6
com.apple.driver.DiskImages          289.1
com.apple.iokit.IOStorageFamily          1.6.3
com.apple.driver.AppleACPIPlatform          1.3.6
com.apple.iokit.IOPCIFamily          2.6.5
com.apple.iokit.IOACPIFamily          1.3.0
Model: iMac11,3, BootROM IM112.0057.B00, 2 processors, Intel Core i3, 3.2 GHz, 4 GB, SMC 1.59f2
Graphics: ATI Radeon HD 5670, ATI Radeon HD 5670, PCIe, 512 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 2.1.14.6
Bluetooth: Version 2.4.5f3, 2 service, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: WDC WD1001FALS-40Y6A0, 931.51 GB
Serial ATA Device: HL-DT-STDVDRW GA32N, 3.99 GB
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfa120000 / 4
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 3
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8215, 0xfa111000 / 5
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: USB2.0 Hub, 0x05e3 (Genesys Logic, Inc.), 0x0608, 0xfd130000 / 6
USB Device: Microsoft Wireless Optical Mouse® 1.00, 0x045e (Microsoft Corporation), 0x00e1, 0xfd133000 / 7
USB Device: Neat Mobile Scanner, 0x1f44, 0x0001, 0xfd140000 / 5
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8502, 0xfd110000 / 4
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000 / 3

Read
http://www.thexlab.com/faqs/kernelpanics.html
But you might also disable/remove the Neat Mobile Scanner, or any other USB devices and see if the KPs stop.
Run several loops at least of Rember
http://www.kelleycomputing.net/rember/
And, FWIW, run the hardware test in extended several times.
http://support.apple.com/kb/ht1509

Java.lang.OutOfMemoryError: unable to create new native thread on Win2000

Dear all,
I install a java server (SAP J2EE) on the windows machine and run into the following problem: the total number of threads cannot exceed 1200 (as i see this in the task manager)
After it does reach this number no other tasks can be started. Thereafter i get java.lang.OutOfMemoryError: unable to create new native thread error .
However the other machine where the same distribution of Win2000 Server is installed can easily coupe with more than 2500 theads. The same is true when the safe mode on the first machine is on: I can generate more than 1200 threads. So it seems the problem has something to do with Windows itself.
I am really puzzled here, would really appreciate any help.
Thanks in advance,
Dimitry
Surkov Dimitry
[email protected]
+49.1632.492618

well, i do not supply any options when i start jvm, but it is not the course:
it also happens with c programs. however in the safe mode it works. both for c and for java program.
so it must be either some software (however memory is ok) or ...? i am lost. In some Unix system you can set the total number of threads allowed as an option in the kernal. But i guess this is not the case with windows.
Thanks a lot for your reply,
dimitry

Weblogic server start error: java.lang.OutOfMemoryError

Hi:
          when i start weblogic server, i met following error !
          java.lang.OutOfMemoryError
          <<no stack trace available>>
          why?
          thanks!
          starting output as follow :
          C:\bea7\user_projects\zhudomain>startweblogic
          C:\bea7\user_projects\zhudomain>echo off
          CLASSPATH=C:\bea7\jdk131_03\lib\tools.jar;C:\bea7\weblogic700\integration\li
          b\wl
          pi-worklist.jar;C:\bea7\weblogic700\samples\server\eval\pointbase\lib\pbserv
          er42
          ECF172.jar;C:\bea7\weblogic700\server\lib\weblogic_sp.jar;C:\bea7\weblogic70
          0\se
          rver\lib\weblogic.jar;
          PATH=.;C:\bea7\weblogic700\server\bin;C:\bea7\jdk131_03\bin;C:\PROGRA~1\RATI
          ONAL
          \RATION~1\NUTCROOT\bin;C:\PROGRA~1\RATIONAL\RATION~1\NUTCROOT\bin\x11;C:\PRO
          GRA~
          1\RATIONAL\RATION~1\NUTCROOT\mksnt;c:\Oracle\Ora81\bin;C:\WINNT\system32;C:\
          WINN
          T;C:\WINNT\System32\Wbem;C:\PROGRA~1\ULTRAE~1;C:\CTEX\MiKTeX\TeXMF\miktex\bi
          n;C:
          \CTEX\MiKTeX\LocalT~1\cct\bin;C:\Program Files\Rational\common;C:\Program
          Files\
          Rational\ClearQuest;C:\Program Files\Rational\Rose\TopLink\;C:\Program
          Files\Rat
          ional\Rational Test;C:\bea7\jdk131_03\bin
          * To start WebLogic Server, use a username and *
          * password assigned to an admin-level user. For *
          * server administration, use the WebLogic Server *
          * console at http://[hostname]:[port]/console *
          C:\bea7\user_projects\zhudomain>"C:\bea7\jdk131_03\bin\java" -hotspot -Xms32
          m -X
          mx200m -Dweblogic.security.SSL.trustedCAKeyStore=C:\bea7\weblogic700\server\
          lib\
          cacerts -Dweblogic.Name=myserver -Dbea.home="C:\bea7" -Dweblogic.management.
          user
          name= -Dweblogic.management.password= -Dweblogic.ProductionModeEnabled= -Dja
          va.s
          ecurity.policy="C:\bea7\weblogic700\server\lib\weblogic.policy"
          weblogic.Server
          <2002-11-13 ÏÂÎç04Ê±21·Ö01Ãë> <Info> <Security> <090065> <Getting boot
          identity
          from user.>
          Enter username to boot WebLogic server:system
          Enter password to boot WebLogic server:
          Starting WebLogic Server...
          <2002-11-13 ÏÂÎç04Ê±21·Ö08Ãë> <Notice> <Management> <140005> <Loading
          configurat
          ion C:\bea7\user_projects\zhudomain\.\config.xml>
          java.lang.OutOfMemoryError
          <<no stack trace available>>


Hi JLK,
Now as you can see that you are getting "java.lang.OutOfMemoryError: PermGen space" during the activation on an application it means that you are application needs more space in the non-heap part of the JVM which is PermGen to create the Classes, Class Structures, Methods and Reflection Objects of this applications hence you are getting this issue.
Now how to solve this issue you try the following check list which would help you resolve this issue and overcome same type of issue in future
1). Make Sure that the PermGen Area is not set to a very less value.
2). Usually if an Application has Many JSP Pages in that case every JSP will be converted to a *.class file before JSP Request Process. So a large number of JSPs causes generation of a Large number of *.class files all these classes gets loaded in the PermGen area.
3). While allocating the -XX:MaxPermSize make sure that you follow a rough Formula… which works in most of the Application Servers.
MaxPermSize = (Xmx/3) —- Very Special Cases (One Third of maximum Heap Size)
MaxPermSize = (Xmx/4) —- Recommended (One Fourth Of maximum Heap Size
To get more information on this I would suggest you to have look at the below link which would surely help you in this case
Topic: OutOfMemory Causes and First Aid Steps?
http://middlewaremagic.com/weblogic/?p=4464
Regards,
Ravish Mody

[b]Keep getting java.lang.OutOfMemoryError.....SOMEONE HELP!!!![/b][/b]

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