Why iTunes does not synchronize any changes made ​​to photos in iPhoto library 11?

Question

I cut out some photos of my library, but on the iPad, although Ihave synchronized after the changes, it always displays the oldversions of my images (those not changed).

Answer 1

Simon:
As Tubby pointed out, your dbms_output commands do not display the value you selected in the trigger. Your trigger based demonstration needs to be more like:
SQL> SELECT * FROM t;
        ID DT
         1 05-SEP-2009
         2 17-JUL-2009
SQL> CREATE TRIGGER t_ai
  2     AFTER INSERT OR UPDATE ON t
  3     FOR EACH ROW
  4  DECLARE
  5     PRAGMA AUTONOMOUS_TRANSACTION;
  6     l_dt t.dt%TYPE;
  7  BEGIN
  8     SELECT dt INTO l_dt
  9     FROM t
10     WHERE id = :new.id;
11     DBMS_OUTPUT.Put_Line ('ID: '||:new.id);
12     DBMS_OUTPUT.Put_Line ('Old dt: '||:old.dt);
13     DBMS_OUTPUT.Put_Line ('New dt: '||:new.dt);
14     DBMS_OUTPUT.Put_Line ('Aut dt: '||l_dt);
15  END;
16  /
Trigger created.
SQL> UPDATE t SET dt = sysdate WHERE id = 2;
ID: 2
Old dt: 17-JUL-2009
New dt: 25-OCT-2009
Aut dt: 17-JUL-2009
1 row updated.So, the automomous transaction select did not see the changed value of dt.
I know you are just trying to understand automomous transactions here and would never do sometihg like this in production right? :-)
Your trigger, as written, has some interesting side effects because of the automomous transaction. For example:
SQL> INSERT INTO t VALUES(3, sysdate - 25);
INSERT INTO t VALUES(3, sysdate - 25)
ERROR at line 1:
ORA-01403: no data found
ORA-06512: at "OPS$ORACLE.T_AI", line 5
ORA-04088: error during execution of trigger 'OPS$ORACLE.T_AI'
SQL> UPDATE t SET id = 3 where trunc(dt) = TO_DATE('05-Sep-2009', 'dd-mon-yyyy');
UPDATE t SET id = 3 where trunc(dt) = TO_DATE('05-Sep-2009', 'dd-mon-yyyy')
ERROR at line 1:
ORA-01403: no data found
ORA-06512: at "OPS$ORACLE.T_AI", line 5
ORA-04088: error during execution of trigger 'OPS$ORACLE.T_AI'John