Reg: Max no of triggers on a Table

Question

All,
Could you please clarify me on, How many triggers we can apply on a table. As far as i know, there is no limit from 11g on wards, but not sure, before 11g it was only 12 ( 12 types of triggers).  Could you please provide me a link where i can check this in the oracle documentation.
Thanks

Answer 1

"Since you can define separate triggers on  different columns the only limiting factor will be based on the number of columns in the table."
How the trigger will be limiting based on the no of columns in a table.
Just a heads up for you and others that think there are shortcuts to learning.
You aren't going to learn if you are unwilling to read the documentation or to try things for yourself.
It is very easy to do both of those things so when people won't do them it gives the impression that they are lazy and just want other people to do their work for them.
In an interview is is VERY easy to tell when you have one of those people in front of you.
A simple web search for 'oracle 11g creating trigger' lists this link to the PL/SQL Langauge Reference as the second result
http://docs.oracle.com/cd/B28359_01/appdev.111/b28370/triggers.htm#BABCIBBJ
At the top of that link is a list of the topics covered with a link to each of them. One of those topics is 'Creating Triggers':
Creating Triggers
To create a trigger, use the CREATE TRIGGER statement. By default, a trigger is created in enabled state. To create a trigger in disabled state, use the DISABLE clause of the CREATE TRIGGER statement. For information about trigger states, see Overview of Triggers.
When using the CREATE TRIGGER statement with an interactive tool, such as SQL*Plus or Enterprise Manager, put a single slash (/) on the last line, as in Example 9-1, which creates a simple trigger for the emp table.
Example 9-1 CREATE TRIGGER Statement
CREATE OR REPLACE TRIGGER Print_salary_changes  BEFORE DELETE OR INSERT OR UPDATE ON emp
   FOR EACH ROW
   WHEN (NEW.EMPNO > 0)
   DECLARE  sal_diff number;
   BEGIN
  sal_diff  := :NEW.SAL  - :OLD.SAL;
   dbms_output.put('Old salary: ' || :OLD.sal);
   dbms_output.put('  New salary: ' || :NEW.sal);
   dbms_output.put_line('  Difference ' || sal_diff);
   END;
Did you notice this line?
WHEN (NEW.EMPNO > 0)
So create a new trigger by changong the name of the trigger to Print_salary_changes1 but use this line
WHEN (NEW.EMPNO < 0)
Now do it again with a new name and use this line
WHEN (NEW.EMPNO = 0)
How many triggers are there now?
Keep going as long as you like using a new name and a new line:
WHEN (NEW.EMPNO IS NULL)
WHEN (NEW.EMPNO = 11)
WHEN (NEW.EMPNO = 22)
WHEN (NEW.EMPNO = 33)
WHEN (NEW.EMPNO = 44)
How many triggers do you have now for just this one column?
Keep going and let us know when Oracle gives you the exception 'TOO MANY TRIGGERS'.