难道真是程序导致Out Of Memory??
软件环境： aix 5.3+weblogic9.2+oracle1023
系统每天在线人数2500左右，数据库的数据量有4张频繁操作的表数据记录在1千万，2千万，3千万以上，其它表至少有20个数据量在百万级别以上。
系统前段时间运行一直正常(已经运行了1年多，以前没有出现过OOM)，只是从4月底出现OOM,最近差不多一个星期出现一次。
对weblogic产生的phd文件和javacore文件分析的不太清楚。。。
以下是weblogic的日志：
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JAVA Memory arguments: -Xms768m -Xmx1536m
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WLS Start Mode=Development
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CLASSPATH=/usr/java5_64/lib/:/usr/java5_64/jre/lib/:/usr/java5_64/lib/dt.jar:/usr/java5_64/lib/tools.jar::/bea/patch_weblogic922/profiles/default/sys_manifest_classpath/weblogic_patch.jar:/usr/java5_64/lib/tools.jar:/bea/weblogic92/server/lib/weblogic_sp.jar:/bea/weblogic92/server/lib/weblogic.jar:/bea/weblogic92/server/lib/webservices.jar::/bea/weblogic92/common/eval/pointbase/lib/pbclient51.jar:/bea/weblogic92/server/lib/xqrl.jar::
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PATH=/bea/weblogic92/server/bin:/usr/java5_64/jre/bin:/usr/java5_64/bin:/usr/bin:/etc:/usr/sbin:/usr/ucb:/usr/bin/X11:/sbin:/usr/java5_64/jre/bin:/usr/java5_64/bin
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***************************************************
*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://hostnameort/console*
***************************************************
starting weblogic with Java version:
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build pap64dev-20080315 (SR7))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 AIX ppc64-64 j9vmap6423-20080315 (JIT enabled)
J9VM - 20080314_17962_BHdSMr
JIT- 20080130_0718ifx2_r8
GC - 200802_08)
JCL- 20080314
Starting WLS with line:
/usr/java5_64/bin/java-Xms768m -Xmx1536m -Dcom.sun.xml.namespace.QName.useCompatibleSerialVersionUID=1.0-da -Dplatform.home=/bea/weblogic92 -Dwls.home=/bea/weblogic92/server -Dwli.home=/bea/weblogic92/integration-Dweblogic.management.discover=false -Dweblogic.management.server=http://xxx.xxx.xxx.xxx-Dwlw.iterativeDev=false -Dwlw.testConsole=false -Dwlw.logErrorsToConsole= -Dfile.encoding=GB18030 -Dweblogic.ext.dirs=/bea/patch_weblogic922/profiles/default/sysext_manifest_classpath -Dweblogic.management.username=weblogic -Dweblogic.management.password=weblogic -Dweblogic.Name=OASvrA03 -Djava.security.policy=/bea/weblogic92/server/lib/weblogic.policy weblogic.Server
[B]
[I][B]
[I][B]
[I][B]
[B]
[I][B] [I]
[B]
[B]
JVMDUMP006I Processing Dump Event "systhrow", detail "java/lang/OutOfMemoryError" - Please Wait.
JVMDUMP007I JVM Requesting Snap Dump using '/bea/user_projects/domains/oa_domain/Snap.20090504.100639.139302.0001.trc'
JVMDUMP010I Snap Dump written to /bea/user_projects/domains/oa_domain/Snap.20090504.100639.139302.0001.trc
JVMDUMP006I Processing Dump Event "systhrow", detail "java/lang/OutOfMemoryError" - Please Wait.
JVMDUMP006I Processing Dump Event "systhrow", detail "java/lang/OutOfMemoryError" - Please Wait.
JVMDUMP006I Processing Dump Event "systhrow", detail "java/lang/OutOfMemoryError" - Please Wait.
JVMDUMP007I JVM Requesting Snap Dump using '/bea/user_projects/domains/oa_domain/Snap.20090504.100641.139302.0002.trc'
JVMDUMP010I Snap Dump written to /bea/user_projects/domains/oa_domain/Snap.20090504.100641.139302.0002.trc
JVMDUMP007I JVM Requesting Snap Dump using '/bea/user_projects/domains/oa_domain/Snap.20090504.100641.139302.0003.trc'
JVMDUMP010I Snap Dump written to /bea/user_projects/domains/oa_domain/Snap.20090504.100641.139302.0003.trc
JVMDUMP007I JVM Requesting Snap Dump using '/bea/user_projects/domains/oa_domain/Snap.20090504.100641.139302.0004.trc'
JVMDUMP010I Snap Dump written to /bea/user_projects/domains/oa_domain/Snap.20090504.100641.139302.0004.trc
JVMDUMP007I JVM Requesting Snap Dump using '/bea/user_projects/domains/oa_domain/Snap.20090504.100641.139302.0005.trc'
JVMDUMP010I Snap Dump written to /bea/user_projects/domains/oa_domain/Snap.20090504.100641.139302.0005.trc
JVMDUMP006I Processing Dump Event "systhrow", detail "java/lang/OutOfMemoryError" - Please Wait.
JVMDUMP007I JVM Requesting Heap Dump using '/bea/user_projects/domains/oa_domain/heapdump.20090504.100641.139302.0006.phd'
JVMDUMP010I Heap Dump written to /bea/user_projects/domains/oa_domain/heapdump.20090504.100641.139302.0006.phd
JVMDUMP013I Processed Dump Event "systhrow", detail "java/lang/OutOfMemoryError".
JVMDUMP007I JVM Requesting Heap Dump using '/bea/user_projects/domains/oa_domain/heapdump.20090504.100641.139302.0007.phd'
JVMDUMP010I Heap Dump written to /bea/user_projects/domains/oa_domain/heapdump.20090504.100641.139302.0007.phd
JVMDUMP013I Processed Dump Event "systhrow", detail "java/lang/OutOfMemoryError".
Exception in thread "Timer-1" java.lang.OutOfMemoryError
JVMDUMP007I JVM Requesting Java Dump using '/bea/user_projects/domains/oa_domain/javacore.20090504.100641.139302.0008.txt'
JVMDUMP012E Error in Java Dump: /bea/user_projects/domains/oa_domain/javacore.20090504.100641.139302.0008.txt
JVMDUMP013I Processed Dump Event "systhrow", detail "java/lang/OutOfMemoryError".
at weblogic.utils.collections.Stack.(Stack.java:18)
at weblogic.utils.collections.Stack.(Stack.java:13)
at weblogic.kernel.ThreadLocalStack$StackInitialValue.initialValue(ThreadLocalStack.java:159)
at weblogic.kernel.FinalThreadLocal$FinalThreadStorage.(FinalThreadLocal.java:183)
at weblogic.kernel.AuditableThread.(AuditableThread.java:13)
at weblogic.work.ExecuteThread.(ExecuteThread.java:63)
at weblogic.work.RequestManager.create(RequestManager.java:304)JVMDUMP007I JVM Requesting Java Dump using '/bea/user_projects/domains/oa_domain/javacore.20090504.100641.139302.0009.txt'
JVMDUMP012E Error in Java Dump: /bea/user_projects/domains/oa_domain/javacore.20090504.100641.139302.0009.txt
JVMDUMP013I Processed Dump Event "systhrow", detail "java/lang/OutOfMemoryError".
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