抓报错对应的SQL

有的时候，系统会出现一些错误(比如：ORA-01652: unable to extend temp segment by 128 in tablespace TEMP)，
但是我们不知道是哪个SQL出问题了，这个时候可以用创建触发器捕获引发错误的SQL

create table error_tab(username varchar2(100),errorcode varchar2(200),errortext varchar2(200),sql_text varchar2(4000));

create or replace trigger error_trigger
  after servererror on database
declare
  n                    number;
  full_text            varchar2(4000);
  sql_text             ora_name_list_t;
  d_current_nr_error   number := ora_server_error(1);
  ora_server_error_msg varchar2(100);
begin
  n                    := ora_sql_txt(sql_text);
  ora_server_error_msg := SQLERRM(-d_current_nr_error);
  FOR i IN 1 .. n LOOP
    full_text := full_text || sql_text(i);
  END LOOP;
  insert into error_tab
  values
    (user, d_current_nr_error, ora_server_error_msg, full_text);
end;
/

比如 

SQL> select 1/0 from dual;
select 1/0 from dual
        *
第 1 行出现错误:
ORA-01476: 除数为 0

SQL> select * from error_tab;

USERNAME             ERRORCODE            ERRORTEXT                                                                                            SQL_TEXT
-------------------- -------------------- ---------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------
SYS                  1476                 ORA-01476: 除数为 0                                                                                  select 1/0 from dual