Profile option FND_INIT_SQL may cause error

When switching Responsibility, forms gave error:

Oracle error -6550: ORA-06550 : line 1, column 7:
 PLS-00306: wrong number or types of arguments in call to 'INIT'
 ORA-06550 : line 1, column 7:
 PL/SQL: Statement ignored
 has been detected in fnd_global.initialize[fnd_init_sql].

I checked profile 'Initialization SQL Statement - Custom' as suggested by Doc ID 577753.1 and did see anything on Site level. But when I ran below code, I sew one at Application level (by ID 10002).

SQL> select PROFILE_OPTION_ID, LEVEL_ID, LEVEL_VALUE, PROFILE_OPTION_VALUE
    from  apps.fnd_profile_option_values
    where profile_option_id = (
     select   profile_option_id   from  apps.fnd_profile_options
    where  profile_option_name = 'FND_INIT_SQL' );
PROFILE_OPTION_ID   LEVEL_ID LEVEL_VALUE   PROFILE_OPTION_VALUE
---------------------------  --------------- --------------------  --------------------------------
             3157                  10002               20004       begin my_global.init; end;

I ran a script in check R12 profile options to got the custom Application name. After I changed profile 'Initialization SQL Statement - Custom' on that Application level to null, which deletes that row from table apps.fnd_profile_option_values, the Oracle errors on forms were fixed.