Oracle查看执行过的SQL

ORACLE中可以通过v$session表查看当前有效的session信息，并且可以通过v$session的sql_id或sql_address通过关联查询v$sql查看当前正在执行的sql语句；

如果想查看session近期执行的sql语句,可以通过v$active_session_history表中的sql_id查看近期历史执行的sql语句,要求数据库的liberary没有被fresh。

SELECT b.sql_text, --content of SQL
a.machine, --which machine run this code
a.username, a.module, -- the method to run this SQL
c.sofar / totalwork * 100, --conplete percent
c.elapsed_seconds, --run time
c.time_remaining --remain to run time
FROM v$session a, v$sqlarea b, v$session_longops c
WHERE a.sql_hash_value = b.hash_value(+) AND a.SID = c.SID(+)
AND a.serial# = c.serial#(+)
--AND a.sid=139

Oracle 最近执行过的sql语句:

SELECT sql_text, last_load_time
FROM v$sql
WHERE last_load_time IS NOT NULL
ORDER BY last_load_time DESC

其它，

SELECT sql_text,last_load_time FROM v$sql order by last_load_time desc;

SELECT   sql_text, last_load_time FROM v$sql WHERE last_load_time IS NOT NULL and sql_text like 'select%' ORDER BY last_load_time DESC;

SELECT   sql_text, last_load_time FROM v$sql WHERE last_load_time IS NOT NULL and sql_text like 'update%' ORDER BY last_load_time DESC;

SELECT   sql_text, last_load_time FROM v$sql WHERE last_load_time IS NOT NULL and last_load_time like' 14-06-09%' ORDER BY last_load_time DESC;

监控concurrent 正在执行的sql

SELECT a.sid, a.serial#, b.sql_text
FROM v$session a, v$sqltext b
WHERE a.sql_address = b.address
--AND a.sid = <...>
ORDER BY b.piece

正在执行的

SELECT a.username, a.sid,b.SQL_TEXT, b.SQL_FULLTEXT
FROM v$session a, v$sqlarea b
where a.sql_address = b.address

执行过的

SELECT b.SQL_TEXT,b.FIRST_LOAD_TIME,b.SQL_FULLTEXT
FROM v$sqlarea b
WHERE b.FIRST_LOAD_TIME between '2009-10-15/09:24:47' and
'2009-10-15/09:24:47' order by b.FIRST_LOAD_TIME

（此方法好处可以查看某一时间段执行过的sql，并且 SQL_FULLTEXT 包含了完整的 sql 语句）

其他

SELECT OSUSER,PROGRAM,USERNAME,SCHEMANAME,B.Cpu_Time,STATUS,B.SQL_TEXT
FROM V$SESSION A LEFT JOIN V$SQL B ON A.SQL_ADDRESS=B.ADDRESS AND A.SQL_HASH_VALUE=B.HASH_VALUE ORDER BY b.cpu_time desc

SELECT address, sql_text, piece
FROM v$session, v$sqltext
WHERE address = sql_address
-- and machine = < you machine name >
ORDER BY address, piece

查找前十条性能差的sql

SELECT * FROM (SELECT PARSING_USER_ID,EXECUTIONS,SORTS,
COMMAND_TYPE,DISK_READS,sql_text FROM v$sqlarea
ORDER BY disk_reads DESC )WHERE ROWNUM<10 ;

查看占io较大的正在运行的session

SELECT se.sid,se.serial#,pr.SPID,se.username,se.status,
se.terminal,se.program,se.MODULE,se.sql_address,st.event,st.
p1text,si.physical_reads,
si.block_changes FROM v$session se,v$session_wait st,
v$sess_io si,v$process pr WHERE st.sid=se.sid AND st.
sid=si.sid AND se.PADDR=pr.ADDR AND se.sid>6 AND st.
wait_time=0 AND st.event NOT LIKE '%SQL%' ORDER BY physical_reads DESC

背景，突然发现数据库中数据表内容大量减少，于是想出查下oracle的sql执行历史以查看是执行的什么sql来删除的，于是搜到了http://blog.csdn.net/wzy0623/article/details/9388061 ，

以sysdba登录

sqlplus / as sysdba;

执行如下sql查看最近3天执行的delete和truncate操作

  SELECT c.username,    
         a.program,      
		 b.sql_text,         
		 b.command_type,         
		 a.sample_time   
		 FROM dba_hist_active_sess_history a
         JOIN dba_hist_sqltext b
            ON a.sql_id = b.sql_id
         JOIN dba_users c
            ON a.user_id = c.user_id
   WHERE     a.sample_time BETWEEN SYSDATE - 3 AND SYSDATE
         AND b.command_type IN (7, 85)
ORDER BY a.sample_time DESC;

搜出结果还算有用，虽然都是业务删除，记录下

--查询Oracle正在执行的sql语句及执行该语句的用户

SELECT b.sid oracleID,
       b.username 登录Oracle用户名,
       b.serial#,
       spid 操作系统ID,
       paddr,
       sql_text 正在执行的SQL,
       b.machine 计算机名
FROM v$process a, v$session b, v$sqlarea c
WHERE a.addr = b.paddr
   AND b.sql_hash_value = c.hash_value

--查看正在执行sql的发起者的发放程序

SELECT OSUSER 电脑登录身份,
       PROGRAM 发起请求的程序,
       USERNAME 登录系统的用户名,
       SCHEMANAME,
       B.Cpu_Time 花费cpu的时间,
       STATUS,
       B.SQL_TEXT 执行的sql
FROM V$SESSION A
LEFT JOIN V$SQL B ON A.SQL_ADDRESS = B.ADDRESS
                   AND A.SQL_HASH_VALUE = B.HASH_VALUE
ORDER BY b.cpu_time DESC

--查出oracle当前的被锁对象

SELECT l.session_id sid,
       s.serial#,
       l.locked_mode 锁模式,
       l.oracle_username 登录用户,
       l.os_user_name 登录机器用户名,
       s.machine 机器名,
       s.terminal 终端用户名,
       o.object_name 被锁对象名,
       s.logon_time 登录数据库时间
FROM v$locked_object l, all_objects o, v$session s
WHERE l.object_id = o.object_id
   AND l.session_id = s.sid
ORDER BY sid, s.serial#;

--kill掉当前的锁对象可以为

alter system kill session 'sid， s.serial#‘;

发表于 2020-10-26 16:18 tqq是我阅读(344) 评论(0) 编辑收藏举报

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