Closing a OracleConnection

Question

hi,
i have a class which returns the connection object to me by getting from the jndi datasource that we specify. i'm using the following to send the array to the procedure.
// convert java array to Oracle array type to pass as in parameter.
ArrayDescriptor binList_type_descriptor = ArrayDescriptor.createDescriptor("REPLY_ARRAY", conn);
ARRAY binArray = new ARRAY(binList_type_descriptor, conn, binList);I was getting a ClassCastException in the line where i am creating ArrayDescriptor.
ArrayDescriptor.createDescriptor ()Then I read in the forums that we need to use OracleConnection object while passing to createDescriptor method and this will solve the problem. I got the OracleConnection object using the following code and tried.
Connection oconn = conn.createStatement().getConnection();
// convert java array to Oracle array type to pass as in parameter.
ArrayDescriptor binList_type_descriptor = ArrayDescriptor.createDescriptor("REPLY_ARRAY", oconn);
ARRAY binArray = new ARRAY(binList_type_descriptor, conn, binList);After giving the above code, I am not getting any ClassCast exception and application works properly.
Now, the problem is whenever I try to close the connection that I got above, am getting ClassCast Exception again at the same line (ArrayDescriptor.createDescriptor()). I tried the following ways and both gave the exception.
oconn.close(); // this gave ClassCastException
oconn = null; // this also gave ClassCastException
Please help me in resolving this issue. I need to release the OracleConnection back to the pool otherwise it may pile up the connection objects and create problem.
Thanks In Advance,
Madhuri

Answer 1

>
After giving the above code, I am not getting any
ClassCast exception and application works properly.
Now, the problem is whenever I try to close the
connection that I got above, am getting ClassCast
Exception again at the same line
(ArrayDescriptor.createDescriptor()). I tried the
following ways and both gave the exception.
oconn.close(); // this gave ClassCastException
oconn = null; // this also gave ClassCastException
There is absolutely no way that the second line above gave you that exception. And I seriously doubt the first could give it as well.
The stack trace tells you the exact line the error occurs on. If it indicates the second line above then that means that you are NOT using the same source code as the code that is running. And it probably means the same if it occurs on the first.
So your first step is to determine where the exception is actually occurring.