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Appendix C
JVM Configuration
The Java Virtual Machine (JVM) works by default without any additional
configuration if properly set up.
However, if you need to specify settings for the JVM, such as additional classpath
information, you can configure the JVM properties for iPlanet Web Server via the
Administrator interface. You can add as many other properties as you want to (up
to 64).
For information about JVM, see The Java Virtual Machine Specification from Sun at:
http://java.sun.com/docs/books/vmspec/2nd-edition/html/VMSpecTOC.doc.html
The jvm12.conf File
You can also configure JVM parameters by editing the jvm12.conf configuration
file, which resides under the server’s
config directory.
For example, to disable JIT, you can add the following line to
jvm12.conf:
java.compiler=NONE
NOTE A few attributes on the Configure JVM Attributes page on the Java
tab show as “Default.” Since you can use different JVMs, these
default values are unknown. You cannot query a JVM to find out
the actual default values; instead, refer to your JVM
documentation. For example, for Sun’s JVM, if you choose Yes for
the JIT Compiler option, it shows as “Default” because JIT is
enabled in the JVM by default. However, if you choose No for the
JIT compiler, an explicit entry,
jvm.compiler=NONE, is added to the
jvm12.conf file.
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