我有一个J2EE应用程序在Windows操作系统的IBM Websphere Application Server上运行。
有时，我在javacore文件中看到带有以下信息的OutOfMemoryError异常。
1TISIGINFO Dump Event "systhrow" (00040000) Detail "java/lang/OutOfMemoryError":"Failed to create a thread: retVal -1073741830, errno 12" received
Java使用以下配置运行:
-Xms512m
-Xmx1350m
-Xscmx50M
分析javacore文件，线程数仅为124。
分析堆转储，堆占用的内存约为500Mb。
考虑到相对正常的线程数和堆大小比最大值少很多，我试图弄清楚为什么会看到此错误？
我不确定这是否有帮助，但这是javacore文件的顶部...
NULL ------------------------------------------------------------------------
0SECTION TITLE subcomponent dump routine
NULL ===============================
1TISIGINFO Dump Event "systhrow" (00040000) Detail "java/lang/OutOfMemoryError":"Failed to create a thread: retVal -1073741830, errno 12" received
1TIDATETIME Date: 1970/01/01 at 00:00:00
1TIFILENAME Javacore filename: d:\WebSphere\AppServer\profiles\AppSrv01\javacore.19700101.000000.652.0003.txt
NULL ------------------------------------------------------------------------
0SECTION GPINFO subcomponent dump routine
NULL ================================
2XHOSLEVEL OS Level : Windows Server 2003 5.2 build 3790 Service Pack 2
2XHCPUS Processors -
3XHCPUARCH Architecture : x86
3XHNUMCPUS How Many : 2
NULL
1XHERROR2 Register dump section only produced for SIGSEGV, SIGILL or SIGFPE.
NULL
NULL ------------------------------------------------------------------------
0SECTION ENVINFO subcomponent dump routine
NULL =================================
1CIJAVAVERSION J2RE 5.0 IBM J9 2.3 Windows Server 2003 x86-32 build j9vmwi3223-20080315
1CIVMVERSION VM build 20080314_17962_lHdSMr
1CIJITVERSION JIT enabled - 20080130_0718ifx2_r8
1CIRUNNINGAS Running as a standalone JVM
1CICMDLINE d:/WebSphere/AppServer/java/bin/java -Declipse.security -Dwas.status.socket=4434 -Dosgi.install.area=d:/WebSphere/AppServer -Dosgi.configuration.area=d:\WebSphere\AppServer\profiles\AppSrv01/configuration -Dosgi.framework.extensions=com.ibm.cds -Xshareclasses:name=webspherev61,nonFatal -Xscmx50M -Dcom.ibm.nio.DirectByteBuffer.SilentRetry=true -Xbootclasspath/p:d:/WebSphere/AppServer/java/jre/lib/ext/ibmorb.jar;d:/WebSphere/AppServer/java/jre/lib/ext/ibmext.jar -classpath d:\WebSphere\AppServer\profiles\AppSrv01/properties;d:/WebSphere/AppServer/properties;d:/WebSphere/AppServer/lib/startup.jar;d:/WebSphere/AppServer/lib/bootstrap.jar;d:/WebSphere/AppServer/lib/j2ee.jar;d:/WebSphere/AppServer/lib/lmproxy.jar;d:/WebSphere/AppServer/lib/urlprotocols.jar;d:/WebSphere/AppServer/deploytool/itp/batchboot.jar;d:/WebSphere/AppServer/deploytool/itp/batch2.jar;d:/WebSphere/AppServer/java/lib/tools.jar -Dibm.websphere.internalClassAccessMode=allow -Xms512m -Xmx1350m -Dws.ext.dirs=d:/WebSphere/AppServer/java/lib;d:\WebSphere\AppServer\profiles\AppSrv01/classes;d:/WebSphere/AppServer/classes;d:/WebSphere/AppServer/lib;d:/WebSphere/AppServer/installedChannels;d:/WebSphere/AppServer/lib/ext;d:/WebSphere/AppServer/web/help;d:/WebSphere/AppServer/deploytool/itp/plugins/com.ibm.etools.ejbdeploy/runtime -Dderby.system.home=d:/WebSphere/AppServer/derby -Dcom.ibm.itp.location=d:/WebSphere/AppServer/bin -Djava.util.logging.configureByServer=true -Duser.install.root=d:\WebSphere\AppServer\profiles\AppSrv01 -Djavax.management.builder.initial=com.ibm.ws.management.PlatformMBeanServerBuilder -Dwas.install.root=d:/WebSphere/AppServer -Dpython.cachedir=d:\WebSphere\AppServer\profiles\AppSrv01/temp/cachedir -Djava.util.logging.manager=com.ibm.ws.bootstrap.WsLogManager -Dserver.root=d:\WebSphere\AppServer\profiles\AppSrv01 -Dappserver.platform=was61 -Ddeploymentmgr.rmi.connection=ensi-nd01.sistema-cni.org.br:9809 -Dappserver.rmi.host=ensi-nd01.sistema-cni.org.br -Duser.timezone=GMT-3 -Djava.security.auth.login.config=d:\WebSphere\AppServer\profiles\AppSrv01/properties/wsjaas.conf -Djava.security.policy=d:\WebSphere\AppServer\profiles\AppSrv01/properties/server.policy com.ibm.wsspi.bootstrap.WSPreLauncher -nosplash -application com.ibm.ws.bootstrap.WSLauncher com.ibm.ws.runtime.WsServer d:\WebSphere\AppServer\profiles\AppSrv01\config ensi-nd01Cell01 ensi-aplic01Node01 lumis4.0.11
1CIJAVAHOMEDIR Java Home Dir: d:\WebSphere\AppServer\java\jre
1CIJAVADLLDIR Java DLL Dir: d:\WebSphere\AppServer\java\jre\bin
1CISYSCP Sys Classpath: d:/WebSphere/AppServer/java/jre/lib/ext/ibmorb.jar;d:/WebSphere/AppServer/java/jre/lib/ext/ibmext.jar;d:\WebSphere\AppServer\java\jre\lib\vm.jar;d:\WebSphere\AppServer\java\jre\lib\core.jar;d:\WebSphere\AppServer\java\jre\lib\charsets.jar;d:\WebSphere\AppServer\java\jre\lib\graphics.jar;d:\WebSphere\AppServer\java\jre\lib\security.jar;d:\WebSphere\AppServer\java\jre\lib\ibmpkcs.jar;d:\WebSphere\AppServer\java\jre\lib\ibmorb.jar;d:\WebSphere\AppServer\java\jre\lib\ibmcfw.jar;d:\WebSphere\AppServer\java\jre\lib\ibmorbapi.jar;d:\WebSphere\AppServer\java\jre\lib\ibmjcefw.jar;d:\WebSphere\AppServer\java\jre\lib\ibmjgssprovider.jar;d:\WebSphere\AppServer\java\jre\lib\ibmjsseprovider2.jar;d:\WebSphere\AppServer\java\jre\lib\ibmjaaslm.jar;d:\WebSphere\AppServer\java\jre\lib\ibmjaasactivelm.jar;d:\WebSphere\AppServer\java\jre\lib\ibmcertpathprovider.jar;d:\WebSphere\AppServer\java\jre\lib\server.jar;d:\WebSphere\AppServer\java\jre\lib\xml.jar;
1CIUSERARGS UserArgs:
2CIUSERARG -Xjcl:jclscar_23
2CIUSERARG -Dcom.ibm.oti.vm.bootstrap.library.path=d:\WebSphere\AppServer\java\jre\bin
2CIUSERARG -Dsun.boot.library.path=d:\WebSphere\AppServer\java\jre\bin
2CIUSERARG -Djava.library.path=d:\WebSphere\AppServer\java\jre\bin;.;D:\WebSphere\AppServer\bin;D:\WebSphere\AppServer\java\bin;D:\WebSphere\AppServer\java\jre\bin;D:\programas\oracle\product\10.2.0\client_1\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;c:\Program Files\Intel\DMIX
2CIUSERARG -Djava.home=d:\WebSphere\AppServer\java\jre
2CIUSERARG -Djava.ext.dirs=d:\WebSphere\AppServer\java\jre\lib\ext
2CIUSERARG -Duser.dir=d:\WebSphere\AppServer\profiles\AppSrv01
2CIUSERARG _j2se_j9=70912 0x7E7A0BE8
2CIUSERARG -Dconsole.encoding=Cp850
2CIUSERARG vfprintf 0x00401145
2CIUSERARG -Declipse.security
2CIUSERARG -Dwas.status.socket=4434
2CIUSERARG -Dosgi.install.area=d:/WebSphere/AppServer
2CIUSERARG -Dosgi.configuration.area=d:\WebSphere\AppServer\profiles\AppSrv01/configuration
2CIUSERARG -Dosgi.framework.extensions=com.ibm.cds
2CIUSERARG -Xshareclasses:name=webspherev61,nonFatal
2CIUSERARG -Xscmx50M
2CIUSERARG -Dcom.ibm.nio.DirectByteBuffer.SilentRetry=true
2CIUSERARG -Xbootclasspath/p:d:/WebSphere/AppServer/java/jre/lib/ext/ibmorb.jar;d:/WebSphere/AppServer/java/jre/lib/ext/ibmext.jar
2CIUSERARG -Dibm.websphere.internalClassAccessMode=allow
2CIUSERARG -Xms512m
2CIUSERARG -Xmx1350m
2CIUSERARG -Dws.ext.dirs=d:/WebSphere/AppServer/java/lib;d:\WebSphere\AppServer\profiles\AppSrv01/classes;d:/WebSphere/AppServer/classes;d:/WebSphere/AppServer/lib;d:/WebSphere/AppServer/installedChannels;d:/WebSphere/AppServer/lib/ext;d:/WebSphere/AppServer/web/help;d:/WebSphere/AppServer/deploytool/itp/plugins/com.ibm.etools.ejbdeploy/runtime
2CIUSERARG -Dderby.system.home=d:/WebSphere/AppServer/derby
2CIUSERARG -Dcom.ibm.itp.location=d:/WebSphere/AppServer/bin
2CIUSERARG -Djava.util.logging.configureByServer=true
2CIUSERARG -Duser.install.root=d:\WebSphere\AppServer\profiles\AppSrv01
2CIUSERARG -Djavax.management.builder.initial=com.ibm.ws.management.PlatformMBeanServerBuilder
2CIUSERARG -Dwas.install.root=d:/WebSphere/AppServer
2CIUSERARG -Dpython.cachedir=d:\WebSphere\AppServer\profiles\AppSrv01/temp/cachedir
2CIUSERARG -Djava.util.logging.manager=com.ibm.ws.bootstrap.WsLogManager
2CIUSERARG -Dserver.root=d:\WebSphere\AppServer\profiles\AppSrv01
2CIUSERARG -Dappserver.platform=was61
2CIUSERARG -Ddeploymentmgr.rmi.connection=ensi-nd01.sistema-cni.org.br:9809
2CIUSERARG -Dappserver.rmi.host=ensi-nd01.sistema-cni.org.br
2CIUSERARG -Duser.timezone=GMT-3
2CIUSERARG -Djava.security.auth.login.config=d:\WebSphere\AppServer\profiles\AppSrv01/properties/wsjaas.conf
2CIUSERARG -Djava.security.policy=d:\WebSphere\AppServer\profiles\AppSrv01/properties/server.policy
2CIUSERARG -Dinvokedviajava
2CIUSERARG -Djava.class.path=d:\WebSphere\AppServer\profiles\AppSrv01/properties;d:/WebSphere/AppServer/properties;d:/WebSphere/AppServer/lib/startup.jar;d:/WebSphere/AppServer/lib/bootstrap.jar;d:/WebSphere/AppServer/lib/j2ee.jar;d:/WebSphere/AppServer/lib/lmproxy.jar;d:/WebSphere/AppServer/lib/urlprotocols.jar;d:/WebSphere/AppServer/deploytool/itp/batchboot.jar;d:/WebSphere/AppServer/deploytool/itp/batch2.jar;d:/WebSphere/AppServer/java/lib/tools.jar
2CIUSERARG vfprintf
2CIUSERARG _port_library 0x7E7A04F8
2CIUSERARG -Xdump
NULL
最佳答案
好像您用完了 native 内存。参见"Thanks for the memory"。
将堆空间减少到1024m:
2CIUSERARG -Xms512m
2CIUSERARG -Xmx1350m