AIX系统dump文件分析工具
Using the dump extractor, jextract
<div class="body">To use the full facilities of the dump viewer, you must first run the jextract tool on the system dump. The jextract tool obtains platform-specific information such as word size, endianness, data structure layouts, and symbolic information. It puts this information into an XML file. You must run the jextract tool on the same platform and the same JVM level (ideally the same machine) that was being used when the dump was produced. The combination of the dump file and the XML file produced by jextract allows the dump viewer (jdmpview) to analyze and display Java™ information.
<div style="margin-top: 0.3em;" class="p">The extent to which jextract can analyze the information in a dump is affected by the state of the JVM when it was taken. For example, the dump could have been taken while the JVM was in an inconsistent state. The exclusive and prepwalk dump options ensure that the JVM (and the Java heap) is in a safe state before taking a system dump:-Xdump:system:defaults:request=exclusive+prepwalkSetting this option adds a significant overhead to taking a system dump; this overhead could cause problems in rare situations. This option is not enabled by default.
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