Writing a Stored Proc which will execute the Queries passed to it as args

Question

Hi,
I need to write a Stored Proc which gets the Query to be executed as an Argument and return the results in an OUT Variable.
The Stored Proc i wrote is
CREATE OR REPLACE PROCEDURE SP_FETCH_RESULTS(l_query in varchar2,
l_returnValue out clob )
is
l_output utl_file.file_type;
l_theCursor integer ;
l_columnValue clob;
l_status integer;
l_results      clob;
begin
l_theCursor := dbms_sql.open_cursor;
-- Parse the Query
dbms_sql.parse( l_theCursor, ':x', dbms_sql.native );
DBMS_SQL.BIND_VARIABLE(l_theCursor, ':x', l_query);
-- Define the coulmnValue Variables
dbms_sql.define_column( l_theCursor, 1, l_columnValue);
-- Execute the Query
l_status := dbms_sql.execute(l_theCursor);
-- Get the Results and prepare the return Value.
loop
exit when ( dbms_sql.fetch_rows(l_theCursor) <= 0 );
dbms_sql.column_value( l_theCursor, 1, l_columnValue );
     DBMS_LOB.APPEND(l_returnValue, l_columnValue);
end loop;
-- Close the Cursor
dbms_sql.close_cursor(l_theCursor);
end SP_FETCH_RESULTS;
As the Queries paased to it always return CLOB Types i declared the OUT Variable as CLOB
And when i try to execute is using the below given PL/SQL Block
DECLARE
l_Query CLOB ;
l_retVal CLOB;
l_results CLOB;
BEGIN
l_Query:='SELECT extract(object_value,''/AC'').getStringVal() into l_results from CommonAssetCatalog';
SP_FETCH_RESULTS(l_Query,l_retVal);
dbms_output.put_line ('Results =');
END;
I am getting the Error.
ERROR at line 1:
ORA-00900: invalid SQL statement
ORA-06512: at "SYS.DBMS_SYS_SQL", line 906
ORA-06512: at "SYS.DBMS_SQL", line 39
ORA-06512: at "WEBLOGIC.SP_FETCH_RESULTS", line 13
ORA-06512: at line 7
Could you guys pls give me some inputs on how to resolve this..
Thanks a lot
Sateesh

Answer 1

Hi James,
I tried with out the Bind Variable and got the Same Error..
The Code which i tried earlier is
CREATE OR REPLACE PROCEDURE SP_FETCH_RESULTS(l_query in varchar2,
l_returnValue out clob )
is
l_output utl_file.file_type;
l_theCursor integer ;
l_columnValue clob;
l_status integer;
l_results      clob;
begin
l_theCursor := dbms_sql.open_cursor;
-- Parse the Query
dbms_sql.parse( l_theCursor, l_query, dbms_sql.native );
--DBMS_SQL.BIND_VARIABLE(l_theCursor, ':x', l_query);
-- Define the coulmnValue Variables
dbms_sql.define_column( l_theCursor, 1, l_columnValue);
-- Execute the Query
l_status := dbms_sql.execute(l_theCursor);
-- Get the Results and prepare the return Value.
loop
exit when ( dbms_sql.fetch_rows(l_theCursor) <= 0 );
dbms_sql.column_value( l_theCursor, 1, l_columnValue );
     DBMS_LOB.APPEND(l_returnValue, l_columnValue);
end loop;
-- Close the Cursor
dbms_sql.close_cursor(l_theCursor);
end SP_FETCH_RESULTS;
and the Procedure got Compiled Successfully and when i ran the PL/SQL Block which calls the Above Stored Proc i got the Error
DECLARE
ERROR at line 1:
ORA-00905: missing keyword
ORA-06512: at "SYS.DBMS_SYS_SQL", line 906
ORA-06512: at "SYS.DBMS_SQL", line 39
ORA-06512: at "WEBLOGIC.SP_FETCH_RESULTS", line 13
ORA-06512: at line 7
Pls let me know how can i resolve this..
Thanks
Sateesh