Recover DDL of altered trigger

Question

Hello everybody,
I've accidentally replaced an existing trigger without taking the back-up of older one on oracle 10g.
Now I wonder if I can get the DDL of older trigger back.
thanks,
Rossy.Rocs

Answer 1

I just tried your test case but its worked!
SQL> select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - Prod
PL/SQL Release 10.2.0.2.0 - Production
CORE    10.2.0.2.0      Production
TNS for 32-bit Windows: Version 10.2.0.2.0 - Production
NLSRTL Version 10.2.0.2.0 - Production
SQL>
SQL> conn nishant/nis
Connected.
SQL> CREATE TABLE orders (
  2  somecolumn VARCHAR2(20),
  3  numbercol  NUMBER(10),
  4  datecol    DATE);
Table created.
SQL> CREATE OR REPLACE TRIGGER statement_level
  2  BEFORE UPDATE
  3  ON orders
  4  DECLARE
  5  vMsg VARCHAR2(30) := 'Statement Level Trigge
  6  BEGIN
  7  dbms_output.put_line(vMsg);
  8  END statement_level;
  9  /
Trigger created.
SQL> set time on
10:10:32 SQL> CREATE OR REPLACE TRIGGER statement_level
10:10:37   2  BEFORE UPDATE
10:10:37   3  ON orders
10:10:37   4  DECLARE
10:10:37   5  vMsg VARCHAR2(30) := 'Statement Level Trigger Fired';
10:10:37   6  BEGIN
10:10:37   7  dbms_output.put_line(vMsg);
10:10:37   8  dbms_output.put_line('A line added');  <--- just made one change here
10:10:37   9  END statement_level;
10:10:37  10  /
Trigger created.
SQL> set time on
10:12:19 SQL> CONN / AS SYSDBA
10:14:06 SQL> SELECT TEXT FROM DBA_SOURCE WHERE NAME='STATEMENT_LEVEL';
TEXT
TRIGGER statement_level
BEFORE UPDATE
ON orders
DECLARE
vMsg VARCHAR2(30) := 'Statement Level Trigger Fired';
BEGIN
dbms_output.put_line(vMsg);
dbms_output.put_line('A line added');
END statement_level;
9 rows selected.
10:14:41 SQL>
10:15:36 SQL> SELECT TEXT FROM DBA_SOURCE as of timestamp to_timestamp('19-jan-2
010 10:09','dd-mon-yyyy hh24:mi')  WHERE NAME='STATEMENT_LEVEL';
TEXT
TRIGGER statement_level
BEFORE UPDATE
ON orders
DECLARE
vMsg VARCHAR2(30) := 'Statement Level Trigger Fired';
BEGIN
dbms_output.put_line(vMsg);  
END statement_level;
8 rows selected.
10:18:47 SQL> drop trigger nishant.statement_level;
Trigger dropped.
10:19:03 SQL> SELECT TEXT FROM DBA_SOURCE as of timestamp to_timestamp('19-jan-2
010 10:10','dd-mon-yyyy hh24:mi')  WHERE NAME='STATEMENT_LEVEL';
TEXT
TRIGGER statement_level
BEFORE UPDATE
ON orders
DECLARE
vMsg VARCHAR2(30) := 'Statement Level Trigger Fired';
BEGIN
dbms_output.put_line(vMsg);
END statement_level;
8 rows selected.
10:19:12 SQL> SELECT TEXT FROM DBA_SOURCE as of timestamp to_timestamp('19-jan-2
010 10:11','dd-mon-yyyy hh24:mi')  WHERE NAME='STATEMENT_LEVEL';
TEXT
TRIGGER statement_level
BEFORE UPDATE
ON orders
DECLARE
vMsg VARCHAR2(30) := 'Statement Level Trigger Fired';
BEGIN
dbms_output.put_line(vMsg);
dbms_output.put_line('A line added');
END statement_level;
9 rows selected.
10:19:23 SQL>Thanks
Nishant