64位windows操作系统下尽量不要使用32位JDK
新产品发布，拿来试用。由于本机是win7_x64，但是为方便工作，机器安装了从32位的JDK1.5一直到64位的JDK1.6的4个JDK。为保证运行时能与大多数人的运行状况相同，依然采用了32位的jdk1.6来运行产品。
结果，我第一次碰到应用服务器刚起来就crash的问题。
生成的JVM的错误日志如下：
[java]
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (malloc) failed to allocate 678096 bytes for Chunk::new
# Possible reasons:
# The system is out of physical RAM or swap space
# In 32 bit mode, the process size limit was hit
# Possible solutions:
# Reduce memory load on the system
# Increase physical memory or swap space
# Check if swap backing store is full
# Use 64 bit Java on a 64 bit OS
# Decrease Java heap size (-Xmx/-Xms)
# Decrease number of Java threads
# Decrease Java thread stack sizes (-Xss)
# Set larger code cache with -XX:ReservedCodeCacheSize=
# This output file may be truncated or incomplete.
#
# Out of Memory Error (allocation.cpp:317), pid=2468, tid=2708
#
# JRE version: 6.0_31-b05
# Java VM: Java HotSpot(TM) Server VM (20.6-b01 mixed mode windows-x86 )
--------------- T H R E A D ---------------
Current thread (0x05f65c00): JavaThread "C2 CompilerThread1" daemon [_thread_in_native, id=2708, stack(0x06320000,0x06370000)]
Stack: [0x06320000,0x06370000], sp=0x0636e594, free space=313k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
[error occurred during error reporting (printing native stack), id 0xc0000005]
Current CompileTask:
C2: 66818 1186 com.sun.corba.se.impl.corba.TypeCodeImpl.read_value_body(Lorg/omg/CORBA_2_3/portable/InputStream;)V (1274 bytes)
--------------- P R O C E S S ---------------
Java Threads: ( => current thread )
0x08447000 JavaThread "Idle HTTPHandler-4" [_thread_blocked, id=7344, stack(0x0e320000,0x0e370000)]
0x08446800 JavaThread "Idle HTTPHandler-3" [_thread_blocked, id=4148, stack(0x0e290000,0x0e2e0000)]
0x08446000 JavaThread "Idle HTTPHandler-2" [_thread_blocked, id=5736, stack(0x0e200000,0x0e250000)]
0x08445c00 JavaThread "Idle ORBWorker-3" [_thread_blocked, id=6876, stack(0x0c460000,0x0c4b0000)]
0x08445400 JavaThread "Running ORBWorker-2" [_thread_in_vm, id=6612, stack(0x0c330000,0x0c380000)]
0x08445000 JavaThread "AS-Monitor Sampling Thread: ThreadMonitor" [_thread_blocked, id=7820, stack(0x0c290000,0x0c2e0000)]
0x08444800 JavaThread "AS-Monitor Sampling Thread: HttpConnectionMonitor" [_thread_blocked, id=7688, stack(0x0c200000,0x0c250000)]
0x06fb3c00 JavaThread "AS-Monitor Sampling Thread: DataSourcesMonitor" [_thread_blocked, id=1448, stack(0x0c170000,0x0c1c0000)]
0x07ffac00 JavaThread "AS-Monitor Sampling Thread: SessionsMonitor" [_thread_blocked, id=6160, stack(0x0c0e0000,0x0c130000)]
0x07ffa400 JavaThread "AS-Monitor Sampling Thread: JTAMonitor" [_thread_blocked, id=6844, stack(0x0c050000,0x0c0a0000)]
0x07ffa000 JavaThread "AS-Monitor Sampling Thread: ClassLoadMonitor" [_thread_blocked, id=7148, stack(0x0bfc0000,0x0c010000)]
0x07ff9800 JavaThread "AS-Monitor Sampling Thread: MemoryMonitor" [_thread_blocked, id=7428, stack(0x0bf30000,0x0bf80000)]
0x07ff9000 JavaThread "p: default-threadpool; w: Idle" daemon [_thread_blocked, id=4840, stack(0x0b4e0000,0x0b530000)]
0x07ff8c00 JavaThread "p: default-threadpool; w: Idle" daemon [_thread_blocked, id=6512, stack(0x0b440000,0x0b490000)]
0x07ff8400 JavaThread "Thread-19" daemon [_thread_blocked, id=7412, stack(0x0b230000,0x0b280000)]
0x07ff8000 JavaThread "JMX server connection timeout 64" daemon [_thread_blocked, id=2176, stack(0x0b180000,0x0b1d0000)]
0x07ff7800 JavaThread "p: default-threadpool; w: Idle" daemon [_thread_blocked, id=7128, stack(0x0b010000,0x0b060000)]
0x07ff7400 JavaThread "Idle ORBWorker-1" [_thread_blocked, id=7976, stack(0x0af60000,0x0afb0000)]
0x06fb4800 JavaThread "SelectorThread" daemon [_thread_in_native, id=3124, stack(0x0aec0000,0x0af10000)]
0x06fb4000 JavaThread "SelectorThread" daemon [_thread_in_native, id=2704, stack(0x0ae10000,0x0ae60000)]
0x06fb3400 JavaThread "pool-2-thread-1" [_thread_blocked, id=8036, stack(0x0a910000,0x0a960000)]
0x06fb2c00 JavaThread "Idle HTTPHandler-1" [_thread_blocked, id=6600, stack(0x0a7d0000,0x0a820000)]
0x06fb2800 JavaThread "HttpReader" [_thread_in_native, id=5532, stack(0x0a740000,0x0a790000)]
0x06fb2000 JavaThread "MuxReader" [_thread_in_native, id=6712, stack(0x0a6b0000,0x0a700000)]
0x06fb1c00 JavaThread "AutoDeployer" [_thread_blocked, id=6732, stack(0x0a1d0000,0x0a220000)]
0x06fb1400 JavaThread "MongoCleaner22152612" daemon [_thread_blocked, id=4764, stack(0x0a140000,0x0a190000)]
0x06fb1000 JavaThread "derby.rawStoreDaemon" daemon [_thread_blocked, id=8008, stack(0x0a0a0000,0x0a0f0000)]
0x06cfc000 JavaThread "Timer-2" daemon [_thread_blocked, id=6484, stack(0x09fe0000,0x0a030000)]
0x06cf8000 JavaThread "derby.antiGC" daemon [_thread_blocked, id=3232, stack(0x08fd0000,0x09020000)]
0x06cfb800 JavaThread "RMI TCP Connection(idle)" daemon [_thread_blocked, id=2936, stack(0x09ba0000,0x09bf0000)]
0x06cfb400 JavaThread "RMI TCP Connection(4)-192.168.0.70" daemon [_thread_blocked, id=7516, stack(0x095f0000,0x09640000)]
0x06cfac00 JavaThread "RMI TCP Connection(idle)" daemon [_thread_blocked, id=5808, stack(0x094d0000,0x09520000)]
0x06cfa800 JavaThread "RMI TCP Connection(2)-192.168.0.70" daemon [_thread_in_native, id=5784, stack(0x09430000,0x09480000)]
0x06cfa000 JavaThread "JMX server connection timeout 41" daemon [_thread_blocked, id=6264, stack(0x09320000,0x09370000)]
0x06cf9c00 JavaThread "RMI Scheduler(0)" daemon [_thread_blocked, id=8124, stack(0x09290000,0x092e0000)]
0x06cf9400 JavaThread "RMI TCP Connection(1)-192.168.0.70" daemon [_thread_in_native, id=8160, stack(0x09200000,0x09250000)]
0x06cf8800 JavaThread "RMI TCP Accept-0" daemon [_thread_in_native, id=6096, stack(0x091b0000,0x09200000)]
0x06cf7c00 JavaThread "derby.rawStoreDaemon" daemon [_thread_blocked, id=1388, stack(0x08f40000,0x08f90000)]
0x06cf7400 JavaThread "Timer-1" daemon [_thread_blocked, id=3912, stack(0x08eb0000,0x08f00000)]
0x06cf7000 JavaThread "derby.antiGC" daemon [_thread_blocked, id=6244, stack(0x08e20000,0x08e70
补充：软件开发 , Java ,
