Jruby on rails - error using star server command (rails s)

Question

Error when

rails s 

used in the context of my project.

The following are the settings for my application:

• JRuby (1.7.0.preview2)
• Rails (3.2.8)
• IBM DB2 Express C (1.01)
• active-record-jdbc-adapter (1.2.2)

and this is java error:

 # # A fatal error has been detected by the Java Runtime Environment: # # EXCEPTION_PRIV_INSTRUCTION (0xc0000096) at pc=0x0155b803, pid=8552, tid=9692 # # JRE version: 7.0_06-b24 # Java VM: Java HotSpot(TM) Client VM (23.2-b09 mixed mode, sharing windows-x86 ) # Problematic frame: # C 0x0155b803 # # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows # # If you would like to submit a bug report, please visit: # http://bugreport.sun.com/bugreport/crash.jsp # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. # --------------- THREAD --------------- Current thread (0x0155b800): JavaThread "main" [_thread_in_native, id=9692, stack(0x00030000,0x00230000)] siginfo: ExceptionCode=0xc0000096 Registers: EAX=0x00000000, EBX=0x0022e4cc, ECX=0x4b918881, EDX=0x0155be70 ESP=0x0022c31f, EBP=0x00000000, ESI=0x6e2dd981, EDI=0x0155b928 EIP=0x0155b803, EFLAGS=0x00010212 Top of Stack: (sp=0x0022c31f) 0x0022c31f: 00000001 00000000 22c66800 22c31800 0x0022c32f: 1f22ce00 55b80005 4b520001 00000001 0x0022c33f: 00004c00 22c4e000 00189400 00124c00 0x0022c34f: 08000000 22c71411 22c36000 00004e00 0x0022c35f: 00000000 00000000 00000000 00000000 0x0022c36f: 00000000 00000000 00000000 00000000 0x0022c37f: 00000000 00000000 00000000 00010000 0x0022c38f: 00000000 00000000 00000300 00000700 Instructions: (pc=0x0155b803) 0x0155b7e3: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0155b7f3: 00 00 00 00 00 00 00 00 00 00 00 00 00 84 e6 4c 0x0155b803: 6e 00 00 00 00 00 00 00 00 00 00 00 00 48 b4 55 0x0155b813: 01 b0 9e 55 01 00 00 00 00 00 00 00 00 00 52 4b Register to memory mapping: EAX=0x00000000 is an unknown value EBX=0x0022e4cc is pointing into the stack for thread: 0x0155b800 ECX=0x4b918881 is an unknown value EDX=0x0155be70 is an unknown value ESP=0x0022c31f is pointing into the stack for thread: 0x0155b800 EBP=0x00000000 is an unknown value ESI=0x6e2dd981 is an unknown value EDI=0x0155b928 is an unknown value Stack: [0x00030000,0x00230000], sp=0x0022c31f, free space=2032k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) C 0x0155b803 [I have cut this in order to post the question] --------------- PROCESS --------------- Java Threads: ( => current thread ) 0x05bb2800 JavaThread "JRubyJIT-2" daemon [_thread_blocked, id=7064, stack(0x06530000,0x06730000)] 0x05bab800 JavaThread "JRubyJIT-1" daemon [_thread_blocked, id=9600, stack(0x06330000,0x06530000)] 0x041b5c00 JavaThread "Service Thread" daemon [_thread_blocked, id=5368, stack(0x049a0000,0x04ba0000)] 0x041b0400 JavaThread "C1 CompilerThread0" daemon [_thread_blocked, id=10100, stack(0x047a0000,0x049a0000)] 0x041af400 JavaThread "Attach Listener" daemon [_thread_blocked, id=5224, stack(0x045a0000,0x047a0000)] 0x041ac000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=6284, stack(0x043a0000,0x045a0000)] 0x014b7400 JavaThread "Finalizer" daemon [_thread_blocked, id=6280, stack(0x03fa0000,0x041a0000)] 0x014b5800 JavaThread "Reference Handler" daemon [_thread_blocked, id=10156, stack(0x03da0000,0x03fa0000)] =>0x0155b800 JavaThread "main" [_thread_in_native, id=9692, stack(0x00030000,0x00230000)] Other Threads: 0x014b4400 VMThread [stack: 0x03ba0000,0x03da0000] [id=6940] 0x041d1800 WatcherThread [stack: 0x04ba0000,0x04da0000] [id=5440] VM state:not at safepoint (normal execution) VM Mutex/Monitor currently owned by a thread: None Heap def new generation total 4928K, used 637K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 4% used [0x14430000, 0x144636b8, 0x14880000) from space 512K, 84% used [0x14900000, 0x1496c0e0, 0x14980000) to space 512K, 0% used [0x14880000, 0x14880000, 0x14900000) tenured generation total 10944K, used 7202K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 65% used [0x1ead0000, 0x1f1d88c8, 0x1f1d8a00, 0x1f580000) compacting perm gen total 13056K, used 12877K [0x33830000, 0x344f0000, 0x37830000) the space 13056K, 98% used [0x33830000, 0x344c37c8, 0x344c3800, 0x344f0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) Card table byte_map: [0x039c0000,0x03af0000] byte_map_base: 0x0391de80 Polling page: 0x003f0000 Code Cache [0x01940000, 0x01b78000, 0x03940000) total_blobs=1432 nmethods=1170 adapters=195 free_code_cache=30499Kb largest_free_block=31231360 Compilation events (10 events): Event: 2.590 Thread 0x041b0400 1168 org.jruby.lexer.yacc.RubyYaccLexer::rightParen (66 bytes) Event: 2.591 Thread 0x041b0400 nmethod 1168 0x01b76148 code [0x01b76260, 0x01b764cc] Event: 2.591 Thread 0x041b0400 1169 org.jruby.parser.Ruby19Parser$43::execute (13 bytes) Event: 2.591 Thread 0x041b0400 nmethod 1169 0x01b76648 code [0x01b76740, 0x01b76800] Event: 2.598 Thread 0x041b0400 1170 org.jruby.Ruby::getDummy (5 bytes) Event: 2.598 Thread 0x041b0400 nmethod 1170 0x01b76908 code [0x01b76a00, 0x01b76a80] Event: 2.600 Thread 0x041b0400 1171 org.jruby.RubyModule::iterateConstantNoConstMissing (55 bytes) Event: 2.601 Thread 0x041b0400 nmethod 1171 0x01b76ac8 code [0x01b76bf0, 0x01b76d48] Event: 2.601 Thread 0x041b0400 1172 java.nio.CharBuffer::arrayOffset (35 bytes) Event: 2.601 Thread 0x041b0400 nmethod 1172 0x01b76f08 code [0x01b77020, 0x01b77198] GC Heap History (10 events): Event: 1.702 GC heap before {Heap before GC invocations=4 (full 0): def new generation total 4928K, used 4928K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 100% used [0x14430000, 0x14880000, 0x14880000) from space 512K, 100% used [0x14880000, 0x14900000, 0x14900000) to space 512K, 0% used [0x14900000, 0x14900000, 0x14980000) tenured generation total 10944K, used 4557K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 41% used [0x1ead0000, 0x1ef436a8, 0x1ef43800, 0x1f580000) compacting perm gen total 12288K, used 10858K [0x33830000, 0x34430000, 0x37830000) the space 12288K, 88% used [0x33830000, 0x342ca9d8, 0x342caa00, 0x34430000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) Event: 1.723 GC heap after Heap after GC invocations=5 (full 0): def new generation total 4928K, used 512K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 0% used [0x14430000, 0x14430000, 0x14880000) from space 512K, 100% used [0x14900000, 0x14980000, 0x14980000) to space 512K, 0% used [0x14880000, 0x14880000, 0x14900000) tenured generation total 10944K, used 6066K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 55% used [0x1ead0000, 0x1f0bc850, 0x1f0bca00, 0x1f580000) compacting perm gen total 12288K, used 10858K [0x33830000, 0x34430000, 0x37830000) the space 12288K, 88% used [0x33830000, 0x342ca9d8, 0x342caa00, 0x34430000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) } Event: 2.033 GC heap before {Heap before GC invocations=5 (full 0): def new generation total 4928K, used 4928K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 100% used [0x14430000, 0x14880000, 0x14880000) from space 512K, 100% used [0x14900000, 0x14980000, 0x14980000) to space 512K, 0% used [0x14880000, 0x14880000, 0x14900000) tenured generation total 10944K, used 6066K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 55% used [0x1ead0000, 0x1f0bc850, 0x1f0bca00, 0x1f580000) compacting perm gen total 12800K, used 12666K [0x33830000, 0x344b0000, 0x37830000) the space 12800K, 98% used [0x33830000, 0x3448e800, 0x3448e800, 0x344b0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) Event: 2.046 GC heap after Heap after GC invocations=6 (full 0): def new generation total 4928K, used 512K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 0% used [0x14430000, 0x14430000, 0x14880000) from space 512K, 100% used [0x14880000, 0x14900000, 0x14900000) to space 512K, 0% used [0x14900000, 0x14900000, 0x14980000) tenured generation total 10944K, used 6577K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 60% used [0x1ead0000, 0x1f13c4e8, 0x1f13c600, 0x1f580000) compacting perm gen total 12800K, used 12666K [0x33830000, 0x344b0000, 0x37830000) the space 12800K, 98% used [0x33830000, 0x3448e800, 0x3448e800, 0x344b0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) } Event: 2.247 GC heap before {Heap before GC invocations=6 (full 0): def new generation total 4928K, used 4928K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 100% used [0x14430000, 0x14880000, 0x14880000) from space 512K, 100% used [0x14880000, 0x14900000, 0x14900000) to space 512K, 0% used [0x14900000, 0x14900000, 0x14980000) tenured generation total 10944K, used 6577K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 60% used [0x1ead0000, 0x1f13c4e8, 0x1f13c600, 0x1f580000) compacting perm gen total 12800K, used 12728K [0x33830000, 0x344b0000, 0x37830000) the space 12800K, 99% used [0x33830000, 0x3449e270, 0x3449e400, 0x344b0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) Event: 2.257 GC heap after Heap after GC invocations=7 (full 0): def new generation total 4928K, used 189K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 0% used [0x14430000, 0x14430000, 0x14880000) from space 512K, 37% used [0x14900000, 0x1492f7d0, 0x14980000) to space 512K, 0% used [0x14880000, 0x14880000, 0x14900000) tenured generation total 10944K, used 7071K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 64% used [0x1ead0000, 0x1f1b7f38, 0x1f1b8000, 0x1f580000) compacting perm gen total 12800K, used 12728K [0x33830000, 0x344b0000, 0x37830000) the space 12800K, 99% used [0x33830000, 0x3449e270, 0x3449e400, 0x344b0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) } Event: 2.427 GC heap before {Heap before GC invocations=7 (full 0): def new generation total 4928K, used 4605K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 100% used [0x14430000, 0x14880000, 0x14880000) from space 512K, 37% used [0x14900000, 0x1492f7d0, 0x14980000) to space 512K, 0% used [0x14880000, 0x14880000, 0x14900000) tenured generation total 10944K, used 7071K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 64% used [0x1ead0000, 0x1f1b7f38, 0x1f1b8000, 0x1f580000) compacting perm gen total 12800K, used 12762K [0x33830000, 0x344b0000, 0x37830000) the space 12800K, 99% used [0x33830000, 0x344a6950, 0x344a6a00, 0x344b0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) Event: 2.431 GC heap after Heap after GC invocations=8 (full 0): def new generation total 4928K, used 300K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 0% used [0x14430000, 0x14430000, 0x14880000) from space 512K, 58% used [0x14880000, 0x148cb268, 0x14900000) to space 512K, 0% used [0x14900000, 0x14900000, 0x14980000) tenured generation total 10944K, used 7071K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 64% used [0x1ead0000, 0x1f1b7f38, 0x1f1b8000, 0x1f580000) compacting perm gen total 12800K, used 12762K [0x33830000, 0x344b0000, 0x37830000) the space 12800K, 99% used [0x33830000, 0x344a6950, 0x344a6a00, 0x344b0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) } Event: 2.593 GC heap before {Heap before GC invocations=8 (full 0): def new generation total 4928K, used 4716K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 100% used [0x14430000, 0x14880000, 0x14880000) from space 512K, 58% used [0x14880000, 0x148cb268, 0x14900000) to space 512K, 0% used [0x14900000, 0x14900000, 0x14980000) tenured generation total 10944K, used 7071K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 64% used [0x1ead0000, 0x1f1b7f38, 0x1f1b8000, 0x1f580000) compacting perm gen total 13056K, used 12830K [0x33830000, 0x344f0000, 0x37830000) the space 13056K, 98% used [0x33830000, 0x344b7ba8, 0x344b7c00, 0x344f0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) Event: 2.598 GC heap after Heap after GC invocations=9 (full 0): def new generation total 4928K, used 432K [0x14430000, 0x14980000, 0x1ead0000) eden space 4416K, 0% used [0x14430000, 0x14430000, 0x14880000) from space 512K, 84% used [0x14900000, 0x1496c0e0, 0x14980000) to space 512K, 0% used [0x14880000, 0x14880000, 0x14900000) tenured generation total 10944K, used 7202K [0x1ead0000, 0x1f580000, 0x33830000) the space 10944K, 65% used [0x1ead0000, 0x1f1d88c8, 0x1f1d8a00, 0x1f580000) compacting perm gen total 13056K, used 12830K [0x33830000, 0x344f0000, 0x37830000) the space 13056K, 98% used [0x33830000, 0x344b7ba8, 0x344b7c00, 0x344f0000) ro space 10240K, 45% used [0x37830000, 0x37cb4988, 0x37cb4a00, 0x38230000) rw space 12288K, 54% used [0x38230000, 0x388b8030, 0x388b8200, 0x38e30000) } Deoptimization events (0 events): No events Internal exceptions (10 events): Event: 2.514 Thread 0x05bab800 Threw 0x146c0b58 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.514 Thread 0x05bab800 Threw 0x146c3420 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.525 Thread 0x05bb2800 Threw 0x14716cf0 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.526 Thread 0x05bb2800 Threw 0x14719ae0 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.528 Thread 0x0155b800 Threw 0x147121c0 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.528 Thread 0x0155b800 Threw 0x147159f0 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.529 Thread 0x0155b800 Threw 0x147446b8 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.529 Thread 0x0155b800 Threw 0x14745148 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.529 Thread 0x0155b800 Threw 0x14748978 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Event: 2.529 Thread 0x0155b800 Threw 0x147496a8 at C:\jdk7u2_32P\jdk7u6\hotspot\src\share\vm\prims\jvm.cpp:1166 Events (10 events): Event: 2.616 loading class 0x042b79b0 done Event: 2.616 loading class 0x0429f000 done Event: 2.616 loading class 0x042a2ff0 Event: 2.616 loading class 0x042a2ff0 done Event: 2.617 loading class 0x05b0a4f8 Event: 2.617 loading class 0x05b0a4f8 done Event: 2.617 Executing VM operation: Deoptimize Event: 2.618 Executing VM operation: Deoptimize done Event: 2.618 Executing VM operation: Deoptimize Event: 2.618 Executing VM operation: Deoptimize done Dynamic libraries: 0x00400000 - 0x00456000 C:\jruby-1.7.0.preview2\bin\jruby.exe 0x77a00000 - 0x77b3c000 C:\Windows\SYSTEM32\ntdll.dll 0x76020000 - 0x760f4000 C:\Windows\system32\kernel32.dll 0x75c70000 - 0x75cba000 C:\Windows\system32\KERNELBASE.dll 0x777a0000 - 0x77840000 C:\Windows\system32\ADVAPI32.DLL 0x77b50000 - 0x77bfc000 C:\Windows\system32\msvcrt.dll 0x77c10000 - 0x77c29000 C:\Windows\SYSTEM32\sechost.dll 0x76100000 - 0x761a1000 C:\Windows\system32\RPCRT4.dll 0x77450000 - 0x77519000 C:\Windows\system32\USER32.dll 0x77520000 - 0x7756e000 C:\Windows\system32\GDI32.dll 0x77b40000 - 0x77b4a000 C:\Windows\system32\LPK.dll 0x77230000 - 0x772cd000 C:\Windows\system32\USP10.dll 0x76000000 - 0x7601f000 C:\Windows\system32\IMM32.DLL 0x761b0000 - 0x7627c000 C:\Windows\system32\MSCTF.dll 0x684c0000 - 0x68532000 C:\jruby-1.7.0.preview2\bin\jruby.dll 0x77570000 - 0x775a5000 C:\Windows\system32\WS2_32.dll 0x771f0000 - 0x771f6000 C:\Windows\system32\NSI.dll 0x6e230000 - 0x6e57c000 C:\Program Files\Java\jdk1.7.0_06\jre\bin\client\jvm.dll 0x6f130000 - 0x6f137000 C:\Windows\system32\WSOCK32.dll 0x739c0000 - 0x739f2000 C:\Windows\system32\WINMM.dll 0x75ff0000 - 0x75ff5000 C:\Windows\system32\PSAPI.DLL 0x77e40000 - 0x77efe000 C:\Program Files\Java\jdk1.7.0_06\jre\bin\MSVCR100.dll 0x59220000 - 0x5922c000 C:\Program Files\Java\jdk1.7.0_06\jre\bin\verify.dll 0x59050000 - 0x59070000 C:\Program Files\Java\jdk1.7.0_06\jre\bin\java.dll 0x558b0000 - 0x558c3000 C:\Program Files\Java\jdk1.7.0_06\jre\bin\zip.dll 0x75640000 - 0x75656000 C:\Windows\system32\CRYPTSP.dll 0x753b0000 - 0x753eb000 C:\Windows\system32\rsaenh.dll 0x751b0000 - 0x751c7000 C:\Windows\system32\USERENV.dll 0x75b90000 - 0x75b9b000 C:\Windows\system32\profapi.dll 0x75b10000 - 0x75b1c000 C:\Windows\system32\CRYPTBASE.dll 0x509c0000 - 0x509d4000 C:\Program Files\Java\jdk1.7.0_06\jre\bin\net.dll 0x75600000 - 0x7563c000 C:\Windows\system32\mswsock.dll 0x755f0000 - 0x755f6000 C:\Windows\System32\wship6.dll 0x74540000 - 0x74550000 C:\Windows\system32\NLAapi.dll 0x6ead0000 - 0x6eae0000 C:\Windows\system32\napinsp.dll 0x6eab0000 - 0x6eac2000 C:\Windows\system32\pnrpnsp.dll 0x754c0000 - 0x75504000 C:\Windows\system32\DNSAPI.dll 0x6eaa0000 - 0x6eaa8000 C:\Windows\System32\winrnr.dll 0x6ea70000 - 0x6ea97000 C:\Program Files\Common Files\Microsoft Shared\Windows Live\WLIDNSP.DLL 0x76280000 - 0x762d7000 C:\Windows\system32\SHLWAPI.dll 0x750e0000 - 0x750e5000 C:\Windows\System32\wshtcpip.dll 0x74290000 - 0x742ac000 C:\Windows\system32\IPHLPAPI.DLL 0x74280000 - 0x74287000 C:\Windows\system32\WINNSI.DLL 0x6ea60000 - 0x6ea66000 C:\Windows\system32\rasadhlp.dll 0x74180000 - 0x741b8000 C:\Windows\System32\fwpuclnt.dll 0x55400000 - 0x5540f000 C:\Program Files\Java\jdk1.7.0_06\jre\bin\nio.dll 0x051f0000 - 0x0520b000 C:\jruby-1.7.0.preview2\lib\native\i386-Windows\jffi-1.2.dll 0x76480000 - 0x770ca000 C:\Windows\system32\shell32.dll 0x775b0000 - 0x7770c000 C:\Windows\system32\ole32.dll 0x75ac0000 - 0x75b0c000 C:\Windows\system32\apphelp.dll 0x508b0000 - 0x5099b000 C:\Windows\system32\dbghelp.dll VM Arguments: jvm_args: -Djdk.home= -Djruby.home=C:\jruby-1.7.0.preview2 -Djruby.script=jruby -Djruby.shell=cmd.exe -Djffi.boot.library.path=C:\jruby-1.7.0.preview2\lib\native\i386-Windows;C:\jruby-1.7.0.preview2\lib\native\x86_64-Windows -Xmx500m -Xss2048k -Djruby.memory.max=500m -Djruby.stack.max=2048k -Xbootclasspath/a:C:\jruby-1.7.0.preview2\lib\jruby.jar java_command: org.jruby.Main Launcher Type: generic Environment Variables: CLASSPATH=.;C:\PROGRA~1\IBM\SQLLIB\java\db2java.zip;C:\PROGRA~1\IBM\SQLLIB\java\db2jcc.jar;C:\PROGRA~1\IBM\SQLLIB\java\sqlj.zip;C:\PROGRA~1\IBM\SQLLIB\java\db2jcc_license_cu.jar;C:\PROGRA~1\IBM\SQLLIB\bin;C:\PROGRA~1\IBM\SQLLIB\java\common.jar PATH=C:\jruby-1.7.0.preview2\bin;c:\program files\common files\microsoft shared\windows live;C:\Windows\system32;C:\Windows;C:\Windows\system32\wbem;C:\Windows\system32\windowspowershell\v1.0\;c:\program files\microsoft sql server\110\dts\binn\;c:\program files\microsoft sql server\110\tools\binn\;c:\program files\microsoft sql server\110\tools\binn\managementstudio\;c:\program files\microsoft visual studio 10.0\common7\ide\privateassemblies\;c:\program files\windows live\shared;c:\program files\ibm\gsk8\lib;C:\PROGRA~1\IBM\SQLLIB\BIN;C:\PROGRA~1\IBM\SQLLIB\FUNCTION;C:\PROGRA~1\IBM\SQLLIB\SAMPLES\REPL USERNAME=Joro OS=Windows_NT PROCESSOR_IDENTIFIER=x86 Family 6 Model 15 Stepping 13, GenuineIntel --------------- SYSTEM --------------- OS: Windows 7 Build 7601 Service Pack 1 CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 15 stepping 13, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, tsc Memory: 4k page, physical 3145272k(853168k free), swap 6288788k(2541460k free) vm_info: Java HotSpot(TM) Client VM (23.2-b09) for windows-x86 JRE (1.7.0_06-b24), built on Aug 9 2012 23:02:07 by "java_re" with unknown MS VC++:1600 time: Wed Aug 29 21:06:00 2012 elapsed time: 2 seconds 

Has anyone understood why this is happening and how to fix it?

Answer 1

I do not know how to read the dump, but I can say that the JVM is crashing.

Try:

• Another version of the JVM; Java 6 u35 or Java 7 u7.
• Disabling JIT ( jruby -Xcompile.mode=OFF )
• Provide more JRuby memory than 500 MB.

There may also be some error with the JDBC adapter, but I am not familiar with the code base. In any case, it is best to come up with a minimal test case where the problem is observed. (Ideally, this would not include Rails.)