We are running Tomcat 5.0.19 on a 2003 Windows Server. We have installed jdk 1.4. Time to time (about once a week) Tomcat crashes and a hr_ess_pidxxx- error-message is placed under the /bin catalogue of Tomcat. This problem started after changing from a Windows NT server where we were using an older version, 3.2, of Tomcat. I have searched the Archive Lists and also searched the web, and I see that using an odbc.jdbc bridge may cause this kind of problems. We are not using this bridge. Thanks in advance for any advice for solving my problem or helping me understand what is wrong and where. This is the error-message that we get: An unexpected exception has been detected in native code outside the VM. Unexpected Signal : EXCEPTION_ACCESS_VIOLATION (0xc0000005) occurred at PC=0x67EC3CA5 Function=[Unknown.] Library=C:\NORMAN\Nvc\BIN\Niphk.dll NOTE: We are unable to locate the function name symbol for the error just occurred. Please refer to release documentation for possible reason and solutions. Current Java thread: at java.net.PlainSocketImpl.socketClose0(Native Method) at java.net.PlainSocketImpl.socketPreClose(PlainSocketImpl.java:607) at java.net.PlainSocketImpl.close(PlainSocketImpl.java:451) - locked <0x100556c8> (a java.lang.Object) at java.net.Socket.close(Socket.java:1247) - locked <0x10055630> (a java.lang.Object) - locked <0x10055618> (a java.net.Socket) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne ction(Http11Protocol.java:775) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav a:688) at java.lang.Thread.run(Thread.java:534) Dynamic libraries: 0x00400000 - 0x00406000 C:\java\bin\java.exe 0x77F40000 - 0x77FFA000 C:\WINDOWS\system32\ntdll.dll 0x77E40000 - 0x77F34000 C:\WINDOWS\system32\kernel32.dll 0x77DA0000 - 0x77E30000 C:\WINDOWS\system32\ADVAPI32.dll 0x77C50000 - 0x77CF4000 C:\WINDOWS\system32\RPCRT4.dll 0x77BA0000 - 0x77BF4000 C:\WINDOWS\system32\MSVCRT.dll 0x67EC0000 - 0x67EF8000 C:\NORMAN\Nvc\BIN\Niphk.dll 0x77D00000 - 0x77D8F000 C:\WINDOWS\system32\USER32.dll 0x77C00000 - 0x77C44000 C:\WINDOWS\system32\GDI32.dll 0x770E0000 - 0x7715D000 C:\WINDOWS\system32\OLEAUT32.dll 0x77160000 - 0x77284000 C:\WINDOWS\system32\ole32.dll 0x08000000 - 0x08136000 C:\java\jre\bin\client\jvm.dll 0x76AA0000 - 0x76ACC000 C:\WINDOWS\system32\WINMM.dll 0x10000000 - 0x10007000 C:\java\jre\bin\hpi.dll 0x002E0000 - 0x002EE000 C:\java\jre\bin\verify.dll 0x00950000 - 0x00968000 C:\java\jre\bin\java.dll 0x002F0000 - 0x002FD000 C:\java\jre\bin\zip.dll 0x03360000 - 0x0336F000 C:\java\jre\bin\net.dll 0x71C00000 - 0x71C18000 C:\WINDOWS\system32\WS2_32.dll 0x71BF0000 - 0x71BF8000 C:\WINDOWS\system32\WS2HELP.dll 0x71B20000 - 0x71B63000 C:\WINDOWS\system32\mswsock.dll 0x71AE0000 - 0x71AE8000 C:\WINDOWS\System32\wshtcpip.dll 0x76ED0000 - 0x76EF7000 C:\WINDOWS\system32\DNSAPI.dll 0x76F70000 - 0x76F77000 C:\WINDOWS\System32\winrnr.dll 0x76F10000 - 0x76F3F000 C:\WINDOWS\system32\WLDAP32.dll 0x76F80000 - 0x76F85000 C:\WINDOWS\system32\rasadhlp.dll 0x045F0000 - 0x046FA000 C:\java\jre\bin\awt.dll 0x73070000 - 0x73096000 C:\WINDOWS\system32\WINSPOOL.DRV 0x76290000 - 0x762AD000 C:\WINDOWS\system32\IMM32.dll 0x76C10000 - 0x76C38000 C:\WINDOWS\system32\imagehlp.dll 0x6D580000 - 0x6D621000 C:\WINDOWS\system32\dbghelp.dll 0x77B90000 - 0x77B98000 C:\WINDOWS\system32\VERSION.dll 0x76B70000 - 0x76B7B000 C:\WINDOWS\system32\PSAPI.DLL Heap at VM Abort: Heap def new generation total 1984K, used 624K [0x10010000, 0x10230000, 0x104f0000) eden space 1792K, 24% used [0x10010000, 0x1007c3a8, 0x101d0000) from space 192K, 100% used [0x101d0000, 0x10200000, 0x10200000) to space 192K, 0% used [0x10200000, 0x10200000, 0x10230000) tenured generation total 25908K, used 14723K [0x104f0000, 0x11e3d000, 0x14010000) the space 25908K, 56% used [0x104f0000, 0x11350e90, 0x11351000, 0x11e3d000) compacting perm gen total 15872K, used 15772K [0x14010000, 0x14f90000, 0x18010000) the space 15872K, 99% used [0x14010000, 0x14f77260, 0x14f77400, 0x14f90000) Local Time = Thu Jun 03 11:15:33 2004 Elapsed Time = 15021 # # The exception above was detected in native code outside the VM # # Java VM: Java HotSpot(TM) Client VM (1.4.2-b28 mixed mode) # Best regards Mirjam Fredriksen --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]