Problem when call store procedure over a database link

Question

Hi all,
I've create a database link in server "EAST" similar like:
CREATE DATABASE LINK db_link CONNECT TO tiger IDENTIFIED BY scott USING 'abc';
and from server "EAST" i ran the procedure located in server "WEST" somethin like:
exec testing_procedure@db_link('test');
testing_procedure is look like:
Create or Replace procedure testing_procedure (p_testing in varchar2)
as
cursor check_space is
select sum(bytes)/1024/1204 tb_size
from dba_data_files;
my_check_space%ROWTYPE;
begin
open check_space;
loop
fetch check_space into my_check_space;
exit when check_space%NOTFOUND;
insert into test_tf@db_link (test, tb_value) values
(p_testing, my_check_space.tb_size);
end loop;;
close check_space;
end;
and my problem is when i'm run procedure from "EAST" server, the values in test_tf table is the same as when you run that procedure from "WEST" server. I've check the size for both server "EAST", and "WEST" by select sum(bytes)/1024/1204 command. And the value is completely different. And i guest somehow it reuse the value of "WEST" server no matter when you run that procedure in "EAST" server. Any suggesttion, please give me some advices.
Thanks,
Kevin

Answer 1

If this procedure is in WEST server then even if you call it from some another planet using db link, the cursor inside the procedure will fetch the data from that server only means WEST server. So "select sum(bytes)/1024/1204 tb_size
from dba_data_files;" statement in your procedure always fetch the size of the datafiles belongs to the WEST database.
If you want to store the data of two different databases then you have to create the similar procedure in EAST database also.
BTW, you said the you created a database link "db_link" in EAST database to point to WEST database and on WEST database you have that procedure BUT I don't understand why r u using "db_link" in your procdure code in WEST server in this insert statement:
insert into test_tf@db_link (test, tb_value) values
(p_testing, my_check_space.tb_size);Is there a database link on that box also?? Where it is pointing to?? And if not then this code should not be compiled.
Daljit Singh