前段事件公司dba說登入 standby庫 用非dba 身份進入時 報出ORA-00604 ORA-16000錯誤，經過核查，發現是登入觸發器的原因，現將該錯復現如下：

在primary庫中存在登入觸發器 如下：

conn milia/xxxx

create table session_history
(
USERNAME   varchar2(20),
SID    number,
AUDSID    number,
OSUSER    varchar2(30),
ACTION   varchar2(100),
LOGIN_TIME   date,
LOGOFF_TIME   date,
IP   varchar2(20),
TERMINAL   varchar2(30),
PROGRAM   varchar2(100)
)

/

CREATE OR REPLACE TRIGGER LOGON_HISTORY
AFTER LOGON ON DATABASE --WHEN (USER='EQSP') --ONLY FOR USER 'EQSP'
BEGIN
insert into session_history
select username,sid,AUDSID,OSUSER,ACTION,SYSDATE,null,SYS_CONTEXT('USERENV','IP_ADDRESS'),TERMINAL,PROGRAM
from v$session s
where audsid = userenv( 'sessionid' )
  and  s.USERNAME NOT IN ('SYSTEM','SYS','REPADMIN')
  AND S.USERNAME IS NOT NULL;
END;

/

standy database以只讀方式開啟

conn milia/xxxx

連線成功了（因為milia是dba許可權的使用者，即使報錯也可以繞開登入觸發器的錯誤登入系統），但是檢視alert日誌，報錯誤如下：

Errors in file /opt/ora9/product/9.2/rdbms/log/test_ora_2410.trc:
ORA-00604: error occurred at recursive SQL level 1
ORA-16000: database open for read-only access
ORA-06512: at line 2
***Warning - Executing transaction without active Undo Tablespace

trace 登入過程

alter session set events '10046 trace name context forever ,level 12'

conn milia/miniyal

alter session set events '10046 trace name context off' ;

檢視trace檔案

/opt/ora9/product/9.2/rdbms/log/test_ora_2410.trc
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production
ORACLE_HOME = /opt/ora9/product/9.2
System name:    Linux
Node name:      localhost.localdomain
Release:        2.4.21-4.EL
Version:        #1 Fri Oct 3 18:13:58 EDT 2003
Machine:        i686
Instance name: test
Redo thread mounted by this instance: 1
Oracle process number: 10
Unix process pid: 2410, image: [email protected] (TNS V1-V3)

*** SESSION ID:(9.5) 2008-10-29 21:49:33.801
Skipped error 604 during the execution of MILIA.LOGON_HISTORY
*** 2008-10-29 21:49:33.802
ksedmp: internal or fatal error
ORA-00604: error occurred at recursive SQL level 1
ORA-16000: database open for read-only access
ORA-06512: at line 2

發現確實是登入觸發器的問題