Serious Problem using function

Question

Hello mates,
I new to Oracle JDBC and im working on a project that uses Oracle as DB. There are some stored procedures and functions that i have to access , but some of them are getting me nervous. The problem is that when i call a simple function returning a simple CHAR i get the result OK, but when i call two specific functions that also returns CHAR i get null as result, the problem is that when i call them from sqlplus and from Perl i get the result OK, but i call the like SELECT USR_ONLINE.MONTAPOP(160008,'') AS TEST FROM DUAL. Plz help me solve this problem cause my project is stopped because of that.
Ty Very much. Here comes my code:
String sql ="{ ? = call USR_ONLINE.MONTAPOP(160008,'') }";
OracleCallableStatement cstmt = (OracleCallableStatement) con.prepareCall(sql);
          cstmt.registerOutParameter(1,Types.CHAR);     
cstmt.execute();
          System.out.println(cstmt.getString(1));

Answer 1

Bruno,
I get the impression that English is not your first language, so excuse me if I have misunderstood your question.
From the code you posted, it looks like the "MONTAPOP" function takes two parameters -- a NUMBER and a VARCHAR2, I believe -- and that you are calling the function with a null second parameter.
If the above is correct, then I suggest the following:
[Note: Uncompiled and untested.]
String sql ="{? = call USR_ONLINE.MONTAPOP(?,?)}";
CallableStatement cstmt = con.prepareCall(sql);
cstmt.registerOutParameter(1,Types.CHAR);
cstmt.setBigDecimal(2, new BigDecimal(160008));
cstmt.setNull(3, Types.VARCHAR);
cstmt.execute();
System.out.println(cstmt.getString(1));Good Luck,
Avi.