Regarding Cursor

Question

Hi everyone,
     We are using oracle database 10g in windows 2003 platform.
We have two databases named A and B, and created a link from A to B. I have created a SP in Database A as follows,
Code for DB link:
create public database link a_2_blink
connect to gadmin identified by gadmin using 'netservicename';
Procedure:
create or replace procedure test_proc
as
cursor a_cur is
select a.owner "OWNER",a.table_name "TABLE_NAME"
from dba_tables a
where a.owner in ('SCOTT')
and exists
(select owner,table_name
from dba_tables@a_2_blink b
where b.owner=a.owner
and b.table_name=a.table_name
and b.owner in('SCOTT'))
order by a.owner,a.table_name;
begin
for a_rec in a_cur loop
dbms_output.put_line(a_rec.table_name);
end loop;
end;
While compiling the Sp produce the error as follows,
4/5 PL/SQL: SQL Statement ignored
5/10 PL/SQL: ORA-00942: table or view does not exist
16/9 PL/SQL: Statement ignored
16/30 PLS-00364: loop index variable 'A_REC' use is invalid
What's wrong with this query..,can anyone guide me..?
Regards,
Jai.

Answer 1

Could be permissions. Is gadmin granted proper rights to select dba_tables?
Or it could be that the grants are given via a role - then the grant might not work in a procedure.
Try if you can do the select statement directly instead of as a cursor in a procedure.
If you can do it directly and it fails in a procedure, then the reason is that grants via a role is not working in the procedure.
Then you will have to grant the proper permissions directly to gadmin, not via a role.