diff --git a/数据库/oracle/oracle锁表问题.md b/数据库/oracle/oracle锁表问题.md
index 29b0fa8..790fb2b 100644
--- a/数据库/oracle/oracle锁表问题.md
+++ b/数据库/oracle/oracle锁表问题.md
@@ -9,4 +9,41 @@ select b.username,b.sid,b.serial#,logon_time from v$locked_object a,v$session b
 ## 结束产生锁表的会话
 ```
 alter system kill session 'SID,SERIAL#'; 
+```
+## 查询导致锁表的sql
+```
+SELECT
+	A.USERNAME,
+	A.MACHINE,
+	A.PROGRAM,
+	A.SID,
+	A.SERIAL#,
+	A.STATUS,
+	C.PIECE,
+	C.SQL_TEXT 
+FROM
+	V$SESSION A,
+	V$SQLTEXT C 
+WHERE
+	A.SID IN ( SELECT DISTINCT T2.SID FROM V$LOCKED_OBJECT T1, V$SESSION T2 WHERE T1.SESSION_ID = T2.SID ) 
+	AND A.SQL_ADDRESS = C.ADDRESS ( + ) 
+ORDER BY
+	C.PIECE;
+```
+## 查询导致锁表的sql语句
+```
+select l.session_id sid,
+ s.serial#,
+ l.locked_mode,
+ l.oracle_username,
+ s.user#,
+ l.os_user_name,
+ s.machine,
+ s.terminal,
+ a.sql_text,
+ a.action 
+from v$sqlarea a, v$session s, v$locked_object l
+where l.session_id = s.sid
+and s.prev_sql_addr = a.address
+order by sid, s.serial#;
 ```
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