Insert failed in Java Proc

Question

Here is my class
public static String OnlyInsert(
int v_AccommodationVendorID,
int v_AccommodationTypeID,
int v_AccommodationRateTypeID,
int v_PeakPrice
) throws SQLException
String val = "yes";
String x = "";
String insSql = "";
String tDate = "TO_DATE('02/02/2001', 'MM/DD/YYYY')";
OracleDriver ora = new OracleDriver();
conn = ora.defaultConnection();
//insSql = "INSERT INTO Accommodation_Rate_Schedule (AccommodationVendorID, AccommodationTypeID, AccommodationRateTypeID, StartDate, Price) Values (" + v_AccommodationVendorID + "," + v_AccommodationTypeID + "," + v_AccommodationRateTypeID + ",TO_DATE('02/15/2001', 'MM/DD/YYYY')," + v_PeakPrice +")";
try
PreparedStatement pstmt = conn.prepareStatement
("INSERT INTO Accommodation_Rate_Schedule (AccommodationVendorID, AccommodationTypeID, AccommodationRateTypeID, StartDate, Price) Values "
+ "(?, ?, ?, ?, ?)");
pstmt.setInt(1, v_AccommodationVendorID);
pstmt.setInt(2, v_AccommodationTypeID);
pstmt.setInt(3, v_AccommodationRateTypeID);
pstmt.setString(4, tDate);
pstmt.setInt(5, v_PeakPrice);
pstmt.execute();
if(! success)
System.err.println("Insert failed");
x = x + "failed sql" + insSql;
else
System.err.println("Insert is gooooooooood");
x = x + "good sql" + insSql;
catch (Exception e)
System.err.println("exception caught" + e);
x = x + "2" + e;
return(val + "and " + x);
Here is my function
CREATE OR REPLACE FUNCTION ins_acc
(id1 NUMBER,
id2 NUMBER,
id3 NUMBER,
id4 NUMBER
RETURN VARCHAR2
AS
LANGUAGE JAVA
NAME 'Accommodation.OnlyInsert(int, int, int, int)
return java.lang.String';
Every thing is fine till i use the following command
select ins_acc(5, 1, 1, 100) from dual;
I get the following error
oracle.jdbc.driver.OracleSQLException: ORA-14551: cannot perform a DML operation inside a query
Any one please
Thanks
null

Answer 1

Dear Sir/Madam,
Hi. I had a problem exactly like you.
Your problem is for the following statement:
select ... into ... from dual
Here you are performing a select and then
in your stored function you want to perform
an insert. Oracle can not do such a thing.
So you should convert your stored function
to a stored procedure with an out parameter.
Sincerely,
Kaveh Mahdian