OS command from PL/SQL code

Question

Is there any way of running on OS (Operating System) command from SQL or PL/SQL. i.e. calling an executable from a trigger.

Answer 1

Is there any way of running on OS (Operating System) command from >SQL or PL/SQL. i.e. calling an executable from a trigger. Ashis,
Here's an example of a simple piece of Java you can create using SQL*Plus:
CREATE OR REPLACE AND RESOLVE JAVA SOURCE NAMED "RuntimeExample" AS public class RuntimeExample {
public static String runNotepad() {
String returnValue = null;
Runtime r = Runtime.getRuntime();
try {
     Process p = r.exec("notepad.exe");
     returnValue = p.toString();
     } catch (Exception e) {
          System.out.println("Exception calling Runtime.exec()->" + e);
     /* You can get creative here and
     1) Use p.waitFor() to block while the process is running,
     2) Send the command to be executed as a parameter to the method, etc. */
     return returnValue;
CREATE OR REPLACE FUNCTION runNotepad RETURN VARCHAR2 IS
LANGUAGE JAVA NAME 'RuntimeExample.runNotepad() return java.lang.String';
DECLARE
my_varchar2 VARCHAR2(64);
BEGIN
my_varchar2 := runnotepad;
DBMS_OUTPUT.PUT_LINE(my_varchar2);
END;
Hope this helps,
-Dan
http://www.compuware.com/products/numega/dbpartner/dbpordebug.htm
Debug Java in the Oracle Database