Running OO applications that start with a COBOL program

If the first routine of a mixed COBOL and Java™ application is a COBOL program, run the application by specifying the program name at the command prompt. If a JVM is not already running in the process of the COBOL program, the COBOL run time automatically initializes a JVM.

To customize the initialization of the JVM, specify options by setting the COBJVMINITOPTIONS environment variable. Use blanks to separate options. For example:


export COBJVMINITOPTIONS="-Xms10000000 -Xmx20000000 -verbose:gc"

related references  
IBM® SDK for Java - Tools Documentation  
WebSphere® for z/OS: Applications (Java Naming and Directory Interface (JNDI))