oracle查看表锁以及对应语句

set linesize 400 pagesize 999\r
col machine for a20\r
col sql_id for a20\r
col prev_sql_id for a20\r
col object_name for a20\r
col object_type for a20\r
col oracle_username for a15\r

SELECT s.inst_id,\r
       s.sql_id,\r
       s.prev_sql_id,\r
       s.sid,\r
       s.machine,\r
       o.object_name,\r
       o.object_type,\r
       l.oracle_username,\r
       l.locked_mode,s.LOGON_TIME,s.blocking_session,C.PIECE,c.sql_text\r
  FROM gv$locked_object l, gv$session s,\r
   all_objects o,v$sqltext c\r
 WHERE l.inst_id=s.inst_id \r
   AND l.session_id = s.sid\r
   AND l.object_id = o.object_id\r
   and s.sql_address=c.address(+); \r

   INST_ID SQL_ID               PREV_SQL_ID            SID MACHINE              OBJECT_NAME          OBJECT_TYPE          ORACLE_USERNAME LOCKED_MODE LOGON_TIM BLOCKING_SESSION      PIECE SQL_TEXT
---------- -------------------- -------------------- ----- -------------------- -------------------- -------------------- --------------- ----------- --------- ---------------- ---------- ----------------------------------------
         1                      0j01k6ds6uq7v          635 snc-sdyd-oraclerac01 T1                   TABLE                DBMON                     3 08-SEP-23
         1 0j01k6ds6uq7v        g4y6nw3tts7cc          382 snc-sdyd-oraclerac01 T1                   TABLE                DBMON                     3 08-SEP-23              635          0 delete from t1 where rownum=1

上述测试用例：

session 1
delete from t1 where rownum=1;--正常删除

session 2
delete from t1 where rownum=2;--hang住，等待session1释放锁