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Anleitung Zusammenfassung
Additional Files......................................................................................................................43
Additional Environment Variable...............................................................................................43
Java Native Interface (JNI).......................................................................................................43
Calling C or C++ Methods from Java...................................................................................44
Calling Java Methods from C or C++...................................................................................45
Linker and Compiler Options...............................................................................................45
How to Create Your Own Library of Native Code..................................................................46
IEEE Floating-Point Implementation............................................................................................46
Floating-Point Values...........................................................................................................46
Double-Precision Values......................................................................................................46
How to Call TNS Floating-Point Functions from JNI Code.........................................................47
Multithreaded Programming.....................................................................................................47
Thread Scheduling.............................................................................................................47
Threading Considerations for Java Code...............................................................................49
Threading Considerations for Native Code............................................................................50
Java Print Service (JPS)............................................................................................................51
Using the Guardian Printer......................................................................................................51
ThreadDumpPath Support........................................................................................................52
Dynamic Saveabend File Creation.......................................................................................52
Creating Child Process Using the -Dnsk.java.fastExec=true Option............................................52
Preemptive User Threads On NonStop Server For Java............................................................52
Java Authentication and Authorization Service (JAAS)..................................................................53
JavaBeans.............................................................................................................................53
Debugging Java Programs.......................................................................................................54
Debugging Overview.........................................................................................................54
Transports.........................................................................................................................55
java Command Line Options to Run a Debuggee...................................................................55
Starting the Java Debugger (jdb) Tool...................................................................................57
Debugging JNI Code.........................................................................................................57
Debugging Java and JNI Code............................................................................................58
Deviations in JVM Specification Options....................................................................................58
java: Java Application Launcher Command Line Option Deviations...........................................58
jdb: Java Debugger Command Line Option Deviations...........................................................58
Garbage Collection (GC)........................................................................................................59
General Information on Garbage Collection..........................................................................59
Heap Layout......................................................................................................................59
Managing Generation Size.................................................................................................60
Implementation of Garbage Collector Types..........................................................................61
Java Garbage Collector Tuning for Application Performance........................................................62
Java GC Profiling...................................................................................................................64
HeapDumpOnly option......................................................................................................64
JVM Tuning Tools....................................................................................................................66
Tuning Application Performance...............................................................................................66
Memory Considerations: Moving QIO to KSEG2...................................................................66
Determining the Heap Manager..........................................................................................68
Determining the Heap Setting..............................................................................................68
Related Tuning Guides........................................................................................................69
Java Signal Handlers..............................................................................................................69
Change in Loading of .hotspot_compiler and .hotspotrc files........................................................70
5 Transactions.............................................................................................72
Controlling Maximum Concurrent Transactions............................................................................72
Current Class Methods............................................................................................................72
Java Transaction API (JTA)........................................................................................................73
javax.transaction Interfaces.................................................................................................74
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Contents
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