How to execute classes that reside in different user's schema

Question

I have to load a class in App1 and need to register a Java Stored Procedure in App2. This procedure refers class loaded in App1. Finally the procedure is to be executed from app1 user.
I am working with oracle database. It has two schemas App1 and App2.
I have a test class:
public class myTest {
     public static void test(int a, long b)
          System.out.println("A : "+a);
          System.out.println("B : "+b);
I have loaded the class in APP1 schema as follow
loadjava -user app1/app1 -oci8 -resolve –grant app2 myTest.class
Login to SQLPLUS by App1
Then created Java Stored procedure in APP2
CREATE OR REPLACE PROCEDURE APP2.Test( a IN NUMBER, b IN NUMBER) IS LANGUAGE JAVA NAME 'myTest.test(int,long)';
Now when I call this procedure, it gives error mentioned below
SQL> Call App2.Test (1, 2);
ERROR at line 1:
ORA-29540: class myTest does not exist
waithing for your input:)
Regards,
Anil

Answer 1

Hi,
Thanks for your suggestion, but I am not able to resolve the issues as yet. So could you please elaborate on it.
Our main concerned is to port an application running on DB2, to Oracle database. This application has multiple schemas, we have to load classes in one schema and refer theses classes from other schema. As explained in the query mentioned above.
As mentioned in your article, to grant permission to others schemas while loading jar. I have tried this also. Following is the command we used to load classes in APP1 and grant permission to APP2.
loadjava -user app1/app1 -oci8 -resolve -grant app2 myTest.class
But when referring theses classes to create java stored procedure in schemas other than APP1, it says class doesn’t exit.
The same things work fine in DB2 but now working in Oracle.
Note: The application uses single jdbc connection, the connection is shared between different modules; this is achieved by making connection static. So we cannot load jar in all the schemas, as if we load jar in all the schemas then we won’t be able to share static variables.
Please elaborate your suggested solution.
Thanks