Passing the database name as a PL/SQL procedure parameter

Question

How do I pass the name of the database as a parameter to a procedure?
If dbs is the variable name to which I pass the database name as shown in the example,
CREATE OR REPLACE PROCEDURE Extract_gl_acct_Tbl(dbs varchar2)
and I use dbs in the code as follows,
SELECT ACCOUNT,
SETID
FROM SYSADM.PS_GL_ACCOUNT_TBL@dbs
It gives me an error saying 'ORA-04054: database link DBS does not exist'.

Answer 1

You will need to use dynamic SQL to handle this:
create or replace ...
is
type rc is ref cursor;
v_rc rc;
begin
open v_rc for 'select ... from sysadm.ps_gl_account_tbl@' || dbs;
fetch v_rc into ... -- some variables
-- if multiple rows, you'll need to do the fetch in a loop and exit when v_rc%notfound.
close v_rc;
end;