Connect the schema via oracle 10g stored procedures

Question

Hi,
How to connect the another schema through the oracle stored procedures?.I have the 3 in parameters like username,password,hoststring
and i have admin password also.For example i have logged to the admin user and i need to execute the procedures with 3 in parameters.i want to connect the another schema through the stored procedures with crenditials(3 in parameters).The stored procedures has been created in admin user.
Please give me your ideas ASAP.
Thanks&Regards
N.Sivaraman

Answer 1

Create procedure create_db_link (user, paswword, host) as
begin
execute immediate' CREATE DATABASE LINK TEST CONNECT TO  || user || ' IDENTIFIED BY  || paswword || '  USING ''' || host || ''';
end;
Create procedure drop_db_link as
begin
execute immediate' DROP DATABASE LINK TEST';
end;
Create procedure main as
begin
create_db_link;
select whateever into v_whatever from TableA@test;
drop_db_link;
end;