Java HotSpot Virtual Machine

I have a stock trading application that gets automatically executed every day (windows scheduler calls a .bat file which has stuff inside it that starts a java process).

The code has not changed in weeks, and has worked every day, until just this morning I noticed that the program immediately crashed with an EXCEPTION_ACCESS_VIOLATION (the complete contents of the hs_err_pid2540.log file that was autogenerated are posted below).

I tried manually executing the .bat file once and it again immediately crashed, then tried a second manual execution and this time it finally worked. have NO idea why it crashed the first time nor why it suddenly worked.

Because of the above behavior, I assume that the problem is not with my code or probably even with my machine's configuration, but is likely either a jvm bug or maybe just some random hardware failure.

I have filed a bug report with sun, but they usually never respond to these. (Anyone else notice that their bug reports with sun for the last couple of years have gone off to that great black hole in India?)

If any of you have seen errors like this before, or simply have advice for how to diagnose the information given in the file below, please post--I would be much obliged.


contents of the hs_err_pid2540.log file:


#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x6d9093b9, pid=2540, tid=2556
#
# Java VM: Java HotSpot(TM) Server VM (1.5.0_06-b05 mixed mode)
# Problematic frame:
# V [jvm.dll+0x893b9]
#

--------------- T H R E A D ---------------

Current thread (0x00a36a40): ConcurrentMarkSweepThread [id=2556]

siginfo: ExceptionCode=0xc0000005, reading address 0x00330040

Registers:
EAX=0x01000000, EBX=0x4955fb38, ECX=0x00000018, EDX=0x0033003c
ESP=0x4955fa50, EBP=0x46f00000, ESI=0x00a3665c, EDI=0x035200e0
EIP=0x6d9093b9, EFLAGS=0x00010206

Top of Stack: (sp=0x4955fa50)
0x4955fa50: 4955fb38 035200e0 00055880 034b0e00
0x4955fa60: 6d8f5a70 035200e0 034b0e00 00055880
0x4955fa70: 00000ab1 00a36628 6db788a0 00a58200
0x4955fa80: 6d9068f4 034b0e00 00055880 4955fb38
0x4955fa90: 00000000 00a36628 00000000 00000001
0x4955faa0: 000000b4 03607000 12ad0000 034b0e00
0x4955fab0: 00055880 033ca600 03dc1680 034b0e00
0x4955fac0: 00055880 00a366bc 00a3671c 00a36af8

Instructions: (pc=0x6d9093b9)
0x6d9093a9: c1 e8 02 5f 5e 5d 5b c2 0c 00 8b 57 04 83 c2 08
0x6d9093b9: 8b 42 04 85 c0 7f 25 7d 1b 83 c9 ff 2b c8 8b 47


Stack: [0x49520000,0x49560000), sp=0x4955fa50, free space=254k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0x893b9]


--------------- P R O C E S S ---------------

Java Threads: ( => current thread )
0x496f4ba8 JavaThread "ConsoleUtil_Checker" [_thread_blocked, id=2620]
0x496a03e0 JavaThread "pool-1-thread-1" [_thread_in_Java, id=2616]
0x49702848 JavaThread "RoboTrader_StdinReader" [_thread_in_native, id=2612]
0x495a1988 JavaThread "MemoryMonitor_Watcher" [_thread_blocked, id=2600]
0x49593f48 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=2592]
0x00acdc00 JavaThread "CompilerThread1" daemon [_thread_blocked, id=2588]
0x4958bda8 JavaThread "CompilerThread0" daemon [_thread_in_native, id=2584]
0x00acfbc0 JavaThread "AdapterThread" daemon [_thread_blocked, id=2580]
0x4958da80 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=2576]
0x49589008 JavaThread "Surrogate Locker Thread (CMS)" daemon [_thread_blocked, id=2572]
0x4958e5e8 JavaThread "Finalizer" daemon [_thread_blocked, id=2568]
0x49580c88 JavaThread "Reference Handler" daemon [_thread_blocked, id=2564]
0x000371c8 JavaThread "main" [_thread_in_Java, id=2544]

Other Threads:
0x00acfad0 VMThread [id=2560]
0x49590560 WatcherThread [id=2596]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
par new generation total 8128K, used 12326K [0x02ad0000, 0x032d0000, 0x032d0000)
eden space 8064K, 152% used [0x02ad0000, 0x036d9908, 0x032b0000)
from space 64K, 0% used [0x032b0000, 0x032b0000, 0x032c0000)
to space 64K, 0% used [0x032c0000, 0x032c0000, 0x032d0000)
concurrent mark-sweep generation total 253952K, used 0K [0x032d0000, 0x12ad0000, 0x42ad0000)
concurrent-mark-sweep perm gen total 16384K, used 3606K [0x42ad0000, 0x43ad0000, 0x46ad0000)

Dynamic libraries:
0x00400000 - 0x0040c000 C:\Program Files\Java\jdk1.5.0_06\bin\java.exe
0x7c900000 - 0x7c9b0000 C:\WINDOWS\system32\ntdll.dll
0x7c800000 - 0x7c8f4000 C:\WINDOWS\system32\kernel32.dll
0x77dd0000 - 0x77e6b000 C:\WINDOWS\system32\ADVAPI32.dll
0x77e70000 - 0x77f01000 C:\WINDOWS\system32\RPCRT4.dll
0x77c10000 - 0x77c68000 C:\WINDOWS\system32\MSVCRT.dll
0x6d880000 - 0x6dc31000 C:\Program Files\Java\jdk1.5.0_06\jre\bin\server\jvm.dll
0x77d40000 - 0x77dd0000 C:\WINDOWS\system32\USER32.dll
0x77f10000 - 0x77f57000 C:\WINDOWS\system32\GDI32.dll
0x76b40000 - 0x76b6d000 C:\WINDOWS\system32\WINMM.dll
0x76390000 - 0x763ad000 C:\WINDOWS\system32\IMM32.DLL
0x629c0000 - 0x629c9000 C:\WINDOWS\system32\LPK.DLL
0x74d90000 - 0x74dfb000 C:\WINDOWS\system32\USP10.dll
0x6d2f0000 - 0x6d2f8000 C:\Program Files\Java\jdk1.5.0_06\jre\bin\hpi.dll
0x76bf0000 - 0x76bfb000 C:\WINDOWS\system32\PSAPI.DLL
0x6d6b0000 - 0x6d6bc000 C:\Program Files\Java\jdk1.5.0_06\jre\bin\verify.dll
0x6d370000 - 0x6d38d000 C:\Program Files\Java\jdk1.5.0_06\jre\bin\java.dll
0x6d6d0000 - 0x6d6df000 C:\Program Files\Java\jdk1.5.0_06\jre\bin\zip.dll
0x6d530000 - 0x6d543000 C:\Program Files\Java\jdk1.5.0_06\jre\bin\net.dll
0x71ab0000 - 0x71ac7000 C:\WINDOWS\system32\WS2_32.dll
0x71aa0000 - 0x71aa8000 C:\WINDOWS\system32\WS2HELP.dll
0x6d550000 - 0x6d559000 C:\Program Files\Java\jdk1.5.0_06\jre\bin\nio.dll
0x009b0000 - 0x009b6000 C:\Program Files\DTN\IQFeed\iq_jni.dll
0x49ea0000 - 0x49eba000 C:\Progra~1\DTN\IQFeed\iq32.DLL
0x71ad0000 - 0x71ad9000 C:\WINDOWS\system32\WSOCK32.dll
0x7c9c0000 - 0x7d1d5000 C:\WINDOWS\system32\SHELL32.dll
0x77f60000 - 0x77fd6000 C:\WINDOWS\system32\SHLWAPI.dll
0x774e0000 - 0x7761d000 C:\WINDOWS\system32\ole32.dll
0x77120000 - 0x771ac000 C:\WINDOWS\system32\OLEAUT32.dll
0x76b20000 - 0x76b31000 C:\WINDOWS\system32\ATL.DLL
0x76080000 - 0x760e5000 C:\WINDOWS\system32\MSVCP60.dll
0x76c90000 - 0x76cb8000 C:\WINDOWS\system32\IMAGEHLP.dll
0x773d0000 - 0x774d2000 C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.2180_x-ww_a84f1ff9\comctl32.dll
0x5d090000 - 0x5d127000 C:\WINDOWS\system32\comctl32.dll

VM Arguments:
jvm_args: -enableassertions -enablesystemassertions -XX:+UseConcMarkSweepGC -XX:CMSTriggerRatio=20 -XX:+CMSIncrementalMode -XX:+CMSIncrementalPacing -Xms256m -Xmx1024m -XX:OnError=userdump.exe %p -Xverify:all
java_command: bb.finance.trading.RoboTrader -directorySecurity E:/dataFinancial/stock_securityInfo -directorySymbolsToSubscribe ../output/SymbolsToSubscribe
Launcher Type: SUN_STANDARD

Environment Variables:
CLASSPATH=;..\lib\elliptic.jar;..\lib\bb.jar;C:\Progra~1\Jts\api.jar;C:\Progra~1\Jts\jts.jar;C:\Progra~1\DTN\IQFeed;"C:\Program Files\Java\jaf-1.0.2"\activation.jar;"C:\Program Files\Java\javamail-1.3.3_01"\mail.jar
PATH=C:\Program Files\Java\jdk1.5.0_06\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Microsoft OEM Support Tools\userdump;C:\Progra~1\DTN\IQFeed
USERNAME=BrentAndLily
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 15 Model 2 Stepping 9, GenuineIntel



--------------- S Y S T E M ---------------

OS: Windows XP Build 2600 Service Pack 2

CPU:total 2 family 15, cmov, cx8, fxsr, mmx, sse, sse2, ht

Memory: 4k page, physical 2095852k(1381508k free), swap 4038636k(3234544k free)

vm_info: Java HotSpot(TM) Server VM (1.5.0_06-b05) for windows-x86, built on Nov 10 2005 10:53:00 by "java_re" with MS VC++ 6.0