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Chapter 5. Performance tuning 129
place of the OS/400
system class loader. This custom class loader does not detect the static
programs.
To enable the system class loader to load the classes and detect the static programs, you
must add the classpath parameter to the JVM settings. Do this in the Command line settings
field of the application server settings (the same field as the –Xms parameter) as shown in the
example in Figure 5-21. The parameter is –classpath followed by a space and the classpath
value. The classpath value is the fully qualified name of all the JAR files separated by colons
(:). There should not be any spaces in the value. It is similar to the Dependant classpath
parameter in the application node settings except that it includes the deployed JAR files.
Notice that the slashes in the qualified names are forward slashes (UNIX rather than
Windows NT style) and that the separator is a colon rather than a semi-colon (;) (again UNIX
rather than Windows NT style).
Figure 5-21 Application Server panel of the WebSphere console showing the classpath
It is possible that the parameter is too long and will be difficult to edit directly in the field of the
dialog. Therefore, copy the parameter to an editor and modify it there. To copy the entire
parameter, follow these steps:
1. Place the cursor in the field, and press the Home key to ensure that you are at the
beginning of the field.
2. Press and hold the Shift key and then press the End key to select the entire field.
3. Press Ctrl+C to copy the field to the clip board and then press Ctrl+V to paste the
parameter into a text editor (for example, Windows Notepad).
Since the line may be long, check how the editor handles word wrap. Some editors insert line
feeds into long lines of text, which may be a problem. In our example, we turned off word wrap
because the line is too long. To turn off word wrap in Notepad, select Format-> Word Wrap if
a checkmark precedes the option. If there is no checkmark in front of the Word Wrap option,
then Word Wrap is already turned off.