Sun Microsystems Netscape Enterprise Server, Administrator'S Manual

Page: 277 / 532

Chapter 11, Extending Your Server With Programs 277
Java Servlets and JavaServerPages (JSP)
Classpath. The class path includes the paths to the directories and jar files
needed to run the servlet engine, the servlet examples, and any other paths
needed by servlets that you add. Values are separated by semicolons. You can
add new values to the existing class path, but don’t delete the existing value
since it includes paths that are essential for servlet operation.
Configuring JVM Attributes
You can configure attributes for the Java Virtual Machine (JVM) in the
Configure JVM page of the Servlets tab in the Server Manager.
For more information on these options, see The Programmer’s Guide to
Enterprise Server 4.0
.
Deleting Version Files
The server uses two directories to cache information for JavaServerPages (JSP)
and servlets:
• ClassCache
When the server serves a JSP page, it creates a
.java
and a
.class
file
associated with the JSP and stores them in the JSP class cache, in a directory
structure under the
ClassCache
directory.
• SessionData
If the server uses the
MMappedSessionManager
session manager, it
stores persistent session information in the
SessionData
directory.
Each cache has a
version
file containing a version number that the server
uses to determine the structure of the directories and files in the caches. You
can clean out the caches by simply deleting the version file.
When the server starts up, if it does not find the version files, it deletes the
directory structure for the corresponding caches and re-creates the version files.
Next time the server serves a JSP page, it recreates the JSP class cache. The next
time the server serves a JSP page or servlet while using
MMappedSessionManager
session manager, it recreates the session data
cache.