For example, consider the following extract from the header of a fatal error log: The crash could of course be caused by something else, but analysis of the library and any core file or crash dump is a good starting place.
#Ewqlso crashes during installation code#
If the fatal error log indicates that the crash was in a native library, there might be a bug in native code or JNI library code. See also the remaining sections in this chapter.
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#Ewqlso crashes during installation how to#
If the top frame indicated in the error log is another type of frame, file a bug report and include the fatal error log as well as any information on how to reproduce the problem. If so, file a bug report, and ensure that this library name is prominently indicated so that the bug report can be routed to the appropriate developers. If the native library has been provided by another vendor and is used by your application, then file a bug report against this third-party application and provide the fatal error log information.ĭetermine if the native library is part of the Java runtime environment (JRE) by looking in the jre/lib or jre/bin directories in the JRE distribution. The option -Xcheck:jni can help find many native bugs. If the native library is provided by your application, then investigate the source code of your native library. There are three options, depending on the source of the native library. The first step to solving this crash is to investigate the source of the native library where the crash occurred. If the top frame type is a native frame and not one of the operating system native frames, then this indicates that the problem is likely in that native library and not in the Java virtual machine. The error log header indicates the problematic frame. This section presents a number of examples which demonstrate how the error log can be used to suggest the cause of a crash.Ĥ.1.1 Determining Where the Crash Occurred See Appendix C, Fatal Error Log for an explanation of how to locate this file, as well as a detailed description of the file. This is a text file that the HotSpot VM generates in the event of a crash. In general the first step with any crash is to locate the fatal error log. In some cases it is possible work around a crash until the cause of the bug is diagnosed and fixed. This chapter provides suggestions on how to examine a crash. External factors, such as resource exhaustion in the operating system can also cause a crash.Ĭrashes caused by bugs in the HotSpot VM or in the Java SE library code are rare. For example, a crash can occur due to a bug in the HotSpot VM, in a system library, in a Java SE library or API, in application native code, or even in the operating system. There are various possible reasons for a crash.
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This chapter provides information and guidance on some specific procedures for troubleshooting system crashes.Ī crash, or fatal error, causes a process to terminate abnormally. Environment Variables and System Properties Integrating Signal and Exception Handling Troubleshooting Hanging or Looping Processes 4.3 Microsoft Visual C++ Version Considerations.
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4.2.1 Crash in HotSpot Compiler Thread or Compiled Code.4.1.4 Crash in the HotSpot Compiler Thread.4.1.1 Determining Where the Crash Occurred.