Calling PLSQL Procedure with CLOB input parameter from JDBC

Question

Hi..
I've got a PLSQL procedure with a CLOB object as input parameter:
function saveProject (xmldoc CLOB) RETURN varchar IS
I want to call that procedure from my JDBC Application as...
String data = "..."
CallableStatement proc = conn.prepareCall
          ("begin ? := saveProject (?); end;");
neither
proc.setCharacterStream(2, new StringReader(data, data.length());
nor
proc.setString(2, data);
will work.
The Application throws java.sql.Exception: ... PLS-00306 wrong
number or types of arguments in call 'SAVEPROJECT'
How can I use set setClob method?
The Problem is: with Oracles CLOB implementation I can't create
an Instance, and from the CallableStatement a can't get a
Locator for a CLOB-Object.
This CLOB stuff makes me really nuts!
please somebody help me.. thanks
Alex

Answer 1

Hi All,
You can not make it like that.
You can not make clob as input parameter.
Do you want an easy way?
This is the easy way.
sample:
function myFunction(S varchar2(40))
return integer as
begin
insert into TableAAA values(S)
--TableAAA only contains 1 column of clob type
end;
This will work the problem with this is the parameter is in
varchar2 right? so there will be limited length for it.
You can do this to call that function:
nyFunction('My String that will be input into clob field');
There's another slight difficult way, I understand that you have
installed Oracle client/server in your system, try to look at
jdbc folder and try to find demo.zip in that folder, you can
find several ways of doing thing with jdbc.
Have a nice day,
Evan