Question

I have a stored procedure which returns sys_refcursor and I am trying to fetch the cursor from java using JDBC.

plsql stored procedure

 create or replace procedure my_proc(p_deptno IN number,p_emp_no IN varchar2
    , p_cursor OUT SYS_REFCURSOR)
    is
    begin
    open p_cursor FOR
    select *
    from emp
    where deptno = p_deptno and emp_number=p_emp_no;
    end proc;
    /

java code

callablestatement = connection.prepareCall("{cal my_proc(?,?,?)} ");
callablestatement.setInt(1, param1);
callablestatement.setString(2, param2);
callablestatement.registerOutParameter(3, OracleTypes.CURSOR);
callablestatement.execute();
resultSet = ((OracleCallableStatement)callablestatement).getCursor(4);
            while (resultSet.next()) {
                <classname> = mapList(resultSet);
                logger.info(resultSet.getString(1));
            }

When I execute the above I am getting the following execeptions

java.lang.NullPointerException at callablestatement.execute();

and

Non supported SQL92 token at position: 3: cal

Answer 1

I have resolved the issue by using a function with the same code as in the procedure and it has resolved my issue.

And I called my function using the following manner.

private final String FUNCTIONAME= "begin ? :=myfunc(?,?,?); end;"";

Thanks