FIX

1. Import the java class : java.lang.Runtime
    a.   Menu Program -> Import Java Classes ...
    b.   Enter 'java.lang.Runtime' in field 'Import Classes:'
    c.   Press <Import>

2. Use the function exec (to call this function, it is necessary to retrieve the "runtime" object)
Example:

function BeforeReport return boolean is
  rt ORA_JAVA.JOBJECT;
  proc ORA_JAVA.JOBJECT;
begin
  rt := RUNTIME.GetRuntime();
  proc := RUNTIME.exec(rt,'cmd /c set > e:\temp\getruntime.txt');

  return (TRUE);
end;

This example will return the environment settings for a windows environment.

3. If you want to wait for the "OS command" completion, import the java class java.lang.Process and use the method waitfor (This is required if you want to read the file generated by the OS command) :

function BeforeReport return boolean is 
  rt ORA_JAVA.JOBJECT; 
  proc ORA_JAVA.JOBJECT; 
  l_rc NUMBER;
begin 
  rt := RUNTIME.GetRuntime(); 
  proc := RUNTIME.exec(rt,'cmd /c set > e:\temp\getruntime.txt'); 
  l_rc := PROCESS.waitfor (proc); 

  return (TRUE); 
end;

4. Here below, an example for UNIX systems to retrieve the environment settings :

 function BeforeReport return boolean is   
  rt ORA_JAVA.JOBJECT;   
  proc ORA_JAVA.JOBJECT;   
  cmdarray ORA_JAVA.JOBJECT;   
  l_temp_outfile VARCHAR2(2048);   
  l_rc NUMBER;   
BEGIN   
-- java.lang.Runtime and java.lang.Process must be imported.   

begin   
l_temp_outfile := SRW.CREATE_TEMPORARY_FILENAME;   

rt := RUNTIME.GetRuntime();   

-- Create a STRING ARRAY to pass to the method exec   

cmdarray := ORA_JAVA.NEW_STRING_ARRAY(3);   
ORA_JAVA.SET_STRING_ARRAY_ELEMENT (cmdarray, 0, '/bin/sh');   
ORA_JAVA.SET_STRING_ARRAY_ELEMENT (cmdarray, 1, '-c');   
ORA_JAVA.SET_STRING_ARRAY_ELEMENT (cmdarray, 2, 'env >' || l_temp_outfile || ' 2>&1');   

proc := RUNTIME.exec(rt,cmdarray);   

-- Wait for the process completion   
l_rc := PROCESS.waitfor (proc);   

exception   
when others then null;   
end;   

return(TRUE);   
end;