Disable trigger in another db(Oracle) - sql

Question

Can I create a procedure that disables a trigger in another database? I mean, can I disable it with a database link?
I need it for importing data into a data warehouse

Answer 1

Yes, you can do that. Here's how.
In a remote database (called ORCL), I'm creating a table and a trigger:
SQL> create table test (id number);
Table created.
SQL> create or replace trigger trg_test
2 before insert on test
3 for each row
4 begin
5 null;
6 end;
7 /
Trigger created.
Furthermore, in the same (remote) database, I'm creating a procedure which will disable that trigger. It'll use dynamic SQL as you can't execute DDL in PL/SQL just like that:
SQL> create or replace procedure p_disable_trg_test as
2 begin
3 execute immediate 'alter trigger trg_test disable';
4 end;
5 /
Procedure created.
Now, in a local database, I'm creating a database link to the ORCL database:
SQL> create database link dbl_scott_orcl
2 connect to scott
3 identified by tiger
4 using 'orcl';
Database link created.
Does it work?
SQL> select * from dual#dbl_scott_orcl;
D
-
X
Yes, it does. Fine. Now, all you have to do is to call the remote procedure from the local database:
SQL> begin
2 p_disable_trg_test#dbl_scott_orcl;
3 end;
4 /
PL/SQL procedure successfully completed.
SQL>
Let's check the remote database's trigger status:
SQL> select trigger_name, status from user_Triggers where trigger_name = 'TRG_TEST';
TRIGGER_NAME STATUS
------------------------------ --------
TRG_TEST DISABLED
SQL>
DISABLED, as expected.