This document discusses methods for configuring the Java Virtual Machine under WebObjects 4. For information on using Java under WebObjects 3.5.1, please see the WebObjects 3.5.1 Java Bridge Troubleshooting Guide .

Setting Java VM Command-Line Options

Q: How do I pass command-line arguments to the Java VM? I need to increase the garbage heap size, so that my application doesn't run out memory.

A: WebObjects 4 introduces a new way to specify arguments to the Java VM. The following arguments may be specified. Those ending in "Size" or "Port" take number arguments; all others take YES or NO.

• NSJavaCheckSource (equivalent to -cs or -checksource)
• NSJavaNativeStackSize (equivalent to -ss<number>)
• NSJavaStackSize (equivalent to -oss<number>)
• NSJavaMinHeapSize (equivalent to -ms<number>)
• NSJavaMaxHeapSize (equivalent to -mx<number>)
• NSJavaVerifyMode (equivalent to -verify)
• NSJavaEnableClassGC (NO is equivalent to -noclassgc)
• NSJavaEnableVerboseGC (equivalent to -verbosegc)
• NSJavaDisableAsyncGC (equivalent to -noasyncgc)
• NSJavaVerbose (equivalent to -v or -verbose)
• NSJavaDebugging (equivalent to -debug)
• NSJavaDebugPort