如何在Oracle中開發after serverror觸發器？

我想將我的數據庫中的所有錯誤記錄到表中。因此，作爲用戶SYS我寫了下面的代碼：如何在Oracle中開發after serverror觸發器？

CREATE TABLE servererror_log (
    error_datetime TIMESTAMP, 
    error_user  VARCHAR2(30), 
    db_name   VARCHAR2(9), 
    error_stack  VARCHAR2(2000), 
    captured_sql VARCHAR2(1000)); 
/
CREATE OR REPLACE TRIGGER log_server_errors 
AFTER SERVERERROR 
ON DATABASE 
DECLARE 
captured_sql VARCHAR2(1000); 
BEGIN 
    SELECT q.sql_text 
    INTO captured_sql 
    FROM gv$sql q, gv$sql_cursor c, gv$session s 
    WHERE s.audsid = audsid 
    AND s.prev_sql_addr = q.address 
    AND q.address = c.parent_handle; 

    INSERT INTO servererror_log 
    (error_datetime, error_user, db_name, 
    error_stack, captured_sql) 
    VALUES 
    (systimestamp, sys.login_user, sys.database_name, 
    dbms_utility.format_error_stack, captured_sql); 
END log_server_errors;

但是，當我強迫一個錯誤就像試圖從一個不存在表中選擇它doesn't錯誤記錄在表中。

有什麼辦法檢查觸發器是否觸發？另外，我嘗試創建一個測試表來插入，但它也不起作用，即使將觸發器定義爲自主事務並在觸發器內提交。

感謝，華

來源

2009-02-11 xocasdashdash

不要查詢V $ SQL;使用ora_sql_txt獲取語句。

CREATE OR REPLACE TRIGGER log_server_errors 
AFTER SERVERERROR 
ON DATABASE 
DECLARE 
sql_text ora_name_list_t; 
stmt clob; 
n number; 
BEGIN 
    n := ora_sql_txt(sql_text); 
    if n > 1000 then n:= 1000; end if ; 
    FOR i IN 1..n LOOP 
    stmt := stmt || sql_text(i); 
    END LOOP; 

    INSERT INTO servererror_log 
    (error_datetime, error_user, db_name, 
    error_stack, captured_sql) 
    VALUES 
    (systimestamp, sys.login_user, sys.database_name, 
    dbms_utility.format_error_stack, stmt); 
    commit; 
END log_server_errors; 
/

然後：

SQL> select * from c;

這產生：

select * from c 
       * 
ERROR at line 1: 
ORA-00942: table or view does not exist

現在可以查詢：

select * from servererror_log;

爲了產生：

ERROR_DATETIME 
--------------------------------------------------------------------------- 
ERROR_USER      DB_NAME 
------------------------------ --------- 
ERROR_STACK 
-------------------------------------------------------------------------------- 
CAPTURED_SQL 
-------------------------------------------------------------------------------- 
11-FEB-09 02.55.35.591259 PM 
SYS       TS.WORLD 
ORA-00942: table or view does not exist 
select * from c

來源

2009-02-11 12:59:02 Yas

它不起作用。此外，我也嘗試過這種方法，但沒有結果。看起來觸發器沒有觸發。任何其他想法？你知道我該如何檢查觸發器是否被觸發？像LAST_FIRED_TIME列之類的視圖或類似的東西。謝謝Joaquin – xocasdashdash 2009-02-11 16:21:42

檢查您的觸發器的狀態和/或其他觸發的存在有：

select trigger_name, status 
from all_triggers 
where triggering_event like 'ERROR%'

這將導致到：

TRIGGER_NAME  STATUS 
------------  ------- 
LOG_SERVER_ERRORS ENABLED

如果觸發未啓用或其他觸發失敗，它可能不會工作。

來源

2009-02-16 21:35:51 Edwin

要查看是否觸發器被燒成，添加一個或多個線，以這樣的：

DBMS_OUTPUT.PUT_LINE('Got this far');

在sqlplus，SET SERVEROUTPUT ON然後執行一個命令，以產生誤差。你應該得到的輸出是這樣的：

dev> select * from aldfjh; 
select * from aldfjh 
       * 
ERROR at line 1: 
ORA-00942: table or view does not exist 


ORA-00942: table or view does not exist 

Got this far

來源

2009-02-17 20:51:28

保存爲ORA-00942.sql：

-- Drop trigger and ignore errors (e.g., not exists). 
DECLARE 
    existential_crisis EXCEPTION; 
    PRAGMA EXCEPTION_INIT(existential_crisis, -4080); 
BEGIN 
    EXECUTE IMMEDIATE 'DROP TRIGGER TRG_CATCH_ERRORS /*+ IF EXISTS */'; 
    EXCEPTION WHEN existential_crisis THEN 
    DBMS_OUTPUT.PUT_LINE('Ignoring non-existence.'); 
END; 
/

-- Drop table and ignore errors (e.g., not exists). 
DECLARE 
    existential_crisis EXCEPTION; 
    PRAGMA EXCEPTION_INIT(existential_crisis, -942); 
BEGIN 
    EXECUTE IMMEDIATE 'DROP TABLE TBL_ERROR_LOG /*+ IF EXISTS */'; 
    EXCEPTION WHEN existential_crisis THEN 
    DBMS_OUTPUT.PUT_LINE('Ignoring non-existence.'); 
END; 
/

-- Create the table (will not exist due to drop statement). 
CREATE TABLE TBL_ERROR_LOG (
    occurred  timestamp, 
    account  varchar2(32), 
    database_name varchar2(32), 
    stack   clob, 
    query   clob 
); 

-- Create the trigger to log the errors. 
CREATE TRIGGER TRG_CATCH_ERRORS AFTER servererror ON database 
DECLARE 
    sql_text ora_name_list_t; 
    n   number; 
    query_  clob; 
BEGIN 
    n := ora_sql_txt(sql_text); 

    IF n > 1000 THEN n := 1000; END IF; 

    FOR i IN 1 .. n LOOP 
     query_ := query_ || sql_text(i); 
    END LOOP; 

    INSERT INTO TBL_ERROR_LOG 
     (occurred, account, database_name, stack, query) 
    VALUES 
     (systimestamp, sys.login_user, sys.database_name, 
    dbms_utility.format_error_stack, query_); 
END; 
/

運行用sqlplus：

SQL> @ORA-00942.sql 
PL/SQL procedure successfully completed. 

PL/SQL procedure successfully completed. 

Table created. 

Trigger created.

測試：

select * from blargh; 
select * from TBL_ERROR_LOG;

輸出：

2017-10-20 15:15:25.061 SCHEMA XE "ORA-00942: table or view does not exist" select * from blargh

來源

2017-10-20 22:17:33

如何在Oracle中開發after serverror觸發器？

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