Java Program Call from PLSQL

Question

First I have created two Java files
FileName1-TestPLSQL.java
package TestJava;
public class TestPLSQL {
  * @param args
  public static void main(String[] args) {
  // TODO Auto-generated method stub
  test2.world();
FilaName2-test2.java
package TestJava;
public class test2 {
   public static void world()
    System.out.println("Hello world");
Then i have loaded the class in Oracle using Loadjava-
loadjava -user TEST/TEST -v TestPLSQL.java
loadjava -user TEST/TEST -v test2.java
It successfully loaded without any error.
Then i have created one function-
create or replace
FUNCTION F_JAVA_PGM
/*Specify the return type as per the method in the java class*/
RETURN VARCHAR2
AS
/*Specify the external programs base language*/
LANGUAGE JAVA NAME 'TestJava.TestPLSQL(java.lang.String)
return java.lang.String';
While executing the below query -
SELECT F_JAVA_PGM FROM DUAL;
Its giving error-
ORA-29540: class TestJava does not exist
Can anybody help me on this?

Answer 1

INRi wrote:
While executing the below query -
SELECT F_JAVA_PGM FROM DUAL;
Its giving error-
ORA-29540: class TestJava does not exist
Can anybody help me on this?
The call specification is incorrect :
You must publish a method, not a class.
None of the methods return a value, why are you creating a function ?
So, in short, for the specific test case you've submitted here, use a procedure that interfaces the TestJava.TestPLSQL.main method with a String array parameter :
create or replace procedure P_JAVA_PGM
AS LANGUAGE JAVA
NAME 'TestJava.TestPLSQL.main(java.lang.String[])';
Tested OK after loading the sources directly via CREATE JAVA SOURCE :
create or replace and compile java source named file2 as
package TestJava;
public class test2 {
   public static void world()
    System.out.println("Hello world");
create or replace and compile java source named file1 as
package TestJava;
public class TestPLSQL {
  * @param args
  public static void main(String[] args) {
  // TODO Auto-generated method stub
  test2.world();
create or replace procedure P_JAVA_PGM
AS LANGUAGE JAVA
NAME 'TestJava.TestPLSQL.main(java.lang.String[])';
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> exec p_java_pgm
PL/SQL procedure successfully completed.
Result can be seen in a trace file :
*** 2013-08-11 12:44:51.513
Hello world