How to view clob data using sql

Question

Hi,
In our database, we have one table that is having one column of CLOB datatype but now i want to view the data using sql select query but it throws error: "Datatype not supported".
Could any one please let me know how to view the clob data using select query.
Oracle DB version : 10.2.0.3
Thanks

Answer 1

h5.
use read procedure
PROCEDURE READ (
lobsrc IN BFILE|BLOB|CLOB ,
amount IN OUT BINARY_INTEGER,
offset IN INTEGER,
buffer OUT RAW|VARCHAR2 );
example  Updating LOB by Using DBMS_LOB in PL/SQL
DECLARE
lobloc CLOB; -- serves as the LOB locator
text VARCHAR2(32767):='Resigned: 5 August 2000';
amount NUMBER ; -- amount to be written
offset INTEGER; -- where to start writing
BEGIN
SELECT resume INTO lobloc
FROM employees
WHERE employee_id = 405 FOR UPDATE;
offset := DBMS_LOB.GETLENGTH(lobloc) + 2;
amount := length(text);
DBMS_LOB.WRITE (lobloc, amount, offset, text );
text := ' Resigned: 30 September 2000';
SELECT resume INTO lobloc
FROM employees
WHERE employee_id = 170 FOR UPDATE;
amount := length(text);
DBMS_LOB.WRITEAPPEND(lobloc, amount, text);
COMMIT;
END;