How To Resolve Out Of Memory Error In Weblogic
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Weblogic Server Out Of Memory Error
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Weblogic Memory Leak Detection
Latest reply on Jul 1, 2009 5:52 PM by Tom B Out Of Memory Error - Weblogic server 708807 Jul 1, 2009 1:47 PM Hi, We are facing following errors in our production environment frequently... Please guide us how can we identify root cause.. because every time this java.lang.outofmemoryerror alloclargeobjectorarray weblogic error come in different functionalities so we can not blame one functionality (Code)... Error # 1 ====== HomeTroubleshootingDifferent Out Of Memory Issues Different Out Of Memory Issues Divya December 30, 2010 Troubleshooting 14 Comments Tweet Pin It * Exception in thread "CompilerThread1" java.lang.OutOfMemoryError: requested 793020 bytes for Chunk::new. Out java.lang.outofmemoryerror permgen space weblogic 11g of swap space? Out of memory while reading in symbol table of /apps/bea/weblogic92/jdk1.5.0.18/opt/java1.5/jre/lib/PA_RISC2.0/server/libjvm.sl ( 0) 0xc8461230 [/apps/bea/weblogic92/jdk1.5.0.18/opt/java1.5/jre/lib/PA_RISC2.0/server/libjvm.sl] ( 1) https://community.oracle.com/thread/924560 0xc80a5fec [/apps/bea/weblogic92/jdk1.5.0.18/opt/java1.5/jre/lib/PA_RISC2.0/server/libjvm.sl] ( 2) 0xc7f00420 [/apps/bea/weblogic92/jdk1.5.0.18/opt/java1.5/jre/lib/PA_RISC2.0/server/libjvm.sl] ( 3) 0xc7f00ca0 [/apps/bea/weblogic92/jdk1.5.0.18/opt/java1.5/jre/lib/PA_RISC2.0/server/libjvm.sl] ( 4) 0xc8368d08 [/apps/bea/weblogic92/jdk1.5.0.18/opt/java1.5/jre/lib/PA_RISC2.0/server/libjvm.sl] ( 5) 0xc005b2e4 __pthread_body + 0x44 [/usr/lib/libpthread.1] ( 6) 0xc0065574 __pthread_start + 0x14 [/usr/lib/libpthread.1] Java out of memory messages are marked with pid: 13828 http://weblogic-wonders.com/weblogic/2010/12/30/different-out-of-memory-issues/ in /var/adm/syslog/syslog.log. Possible causes: - not enough swap space left, or - kernel parameter MAXDSIZ is very small. Solution: Although it appears that an OutOfMemoryError is thrown this apparent exception is reported by the HotSpot VM code when an allocation from the native heap failed and the native heap may be close to exhaustion. The message indicates the size (in bytes) of the request that failed and also indicates what the memory is required for. In some cases the reason will be shown but in most cases the reason will be the name of a source module reporting the allocation failure. If an OutOfMemoryError with this error is thrown it may require using util This Site Careers Other all forums Forum: BEA/Weblogic BEA 10 Admin server out of memory issue shobit shrivastava Greenhorn Posts: 7 posted 5 years ago Hello Every one , Currently , we have https://coderanch.com/t/516832/BEA-Weblogic/BEA-Admin-server-memory migrated the application from BEA 8 to BEA 10 . However , we http://middlewaretimes.blogspot.com/2014/03/oracle-weblogic-troubleshooting-out-of.html are facing an out of memory issue . Admin server is running out of memory after 4-5 days , Though managed server keeps running , eventually application never goes down. Currently we are using following as memory parameters WL_JMEM=256 WL_JMEM_MIN=256 WL_ADM_JAVA_XMX=512 WL_ADM_JAVA_MAX_PERM=300 WL_SRV_JAVA_XMX=384 WL_SRV_JAVA_MAX_PERM=192 Can any one throw some light on what out of is the minimum memory specification required by BEA 10 to support any application. Though I completely agree that the memory specification will differ based on the complexity of application but to support a medium level complex application what should be the memory specification. We have already tried twice to increase Admin server heap size by changing WL_ADM_JAVA_XMX parameters but sooner or later , Admin server out of memory goes down. Any help will be deeply appreciated . Thanks in advance ! Deepak Bala Bartender Posts: 6663 5 I like... posted 5 years ago Can you post the out of memory error that you get ? Also, how did you confirm that changing the parameters actually changed the heap size ? SCJP 6 articles - SCJP 5/6 mock exams - More SCJP Mocks shobit shrivastava Greenhorn Posts: 7 posted 5 years ago Thanks Deepak for the reply . your response is the quickest as usual . I would like to thank you for the great work in community We configured memory parameters in WLserver10.var file by defining the variables WL_JMEM Default -Xmx: parameter for Admin and Managed servers WL_JMEM_MIN Default -Xms: parameter for Admin and Managed servers WL_ADM_JAVA_XMX Specific -Xmx: parameter for Admin server WL_ADM_JAVA_MAX_PERM -XX:MaxPermSize for the Admin server WL_SRV_JAVA_XMX Specific -Xmx: parameter for the Managed server(s) WL_SRV_JAVA_MAX_PERM -XX:MaxPermSize for the Managed server(s) Now as per the definition , we increased the Prem size not the heap size so far . Let me illustrate entire process so that You can understand the whole work around done by us . Intia Out of Memory error occurs due to memory exhaustion, either in java heap or native memory. In the JVM, OOM errors are thrown when the JVM cannot allocate an object because it is out of heap memory, and no more heap memory could be made available by the garbage collector. Memory Leak: A memory leak occurs if memory is used by an application and not released by the application when it is finished with it. A memory leak can occur in either java heap or native memory, and either will eventually cause an out of memory situation. Problem Troubleshooting Please note that not all of the following items would need to be done. Some issues can be solved by only following a few of the items. Troubleshooting Steps Java heap, Native memory and Process size Java heap: This is the memory that the JVM uses to allocate java objects. The maximum value of java heap memory is specified using the -Xmx flag in the java command line. If the maximum heap size is not specified, then the limit is decided by the JVM considering factors like the amount of physical memory in the machine and the amount of free memory available at that moment. It is always recommended to specify the max java heap value. Native memory: This is the memory that the JVM uses for its own internal operations. The amount of native memory heap that will be used by the JVM depends on the amount of code generated, threads created, memory used during GC for keeping java object information and temporary space used during code generation, optimization etc. If there is a third party native module, it could also use the native memory. For example, native JDBC drivers allocate native memory. The max amount of native memory is limited by the virtual process size limitation on any given OS and the amount of memory already committed for the java heap with -Xmxflag. For example, if the application can allocate a total of 3 GB and if the max java heap is 1 GB, then the max possible native memory is approximately 2 GB. Process size: Process size will be the sum of the java heap, native memory and the memory occupied by the loaded executables and libraries. On 32-bit operating systems, the virtual address space of a process can go up to 4 GB. Out of this 4 GB, the OS kernel reserves some part for itself (typically 1 - 2 GB). The remaining is available for the application. Windows: Different versions of Windows support different process sizes. See http:/Java.lang.outofmemoryerror Java Heap Space In Weblogic
Java.lang.outofmemoryerror: Getnewtla