如何查询Oracle数据库事件(转)

原文地址：http://www.juliandyke.com/Diagnostics/Events/Events.html#Introduction

Oracle event的序号范围是从10000到10999。

1. 列出所有数据库事件

• 使用PL/SQL从数据库中查询数据库事件

SET SERVEROUTPUT ON
DECLARE
  err_msg VARCHAR2(120);
BEGIN
  dbms_output.enable (1000000);
  FOR err_num IN 10000..10999
  LOOP
    err_msg := SQLERRM (-err_num);
    IF err_msg NOT LIKE '%Message '||err_num||' not found%' THEN
      dbms_output.put_line (err_msg);
    END IF;
  END LOOP;
END;
/

• Unix系统上查看event message文件

文件名称：$ORACLE_HOME/rdbms/mesg/oraus.msg

• Unix使用shell脚本查看

#/bin/sh

event=10000               
while [ $event -ne 10999 ]
do                        
    event=`expr $event + 1`
    oerr ora $event       
done

2. 列出当前会话开启动的数据库事件

SET SERVEROUTPUT ON                                           
DECLARE                                                       
    l_level NUMBER;                                           
BEGIN                                                         
    FOR l_event IN 10000..10999                               
    LOOP                                                      
        dbms_system.read_ev (l_event,l_level);                
        IF l_level > 0 THEN                                   
            dbms_output.put_line ('Event '||TO_CHAR (l_event)||' is set at level '||TO_CHAR (l_level));          
        END IF;                                               
    END LOOP;                                                 
END;                                                          
/