oracle 鎖表sql查詢及解鎖

1.鎖表sql查詢，可查看導致鎖表的sql

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#;

2.殺死鎖表進程

alter system kill session 'SID,SERIAL#';

3.查詢連接數最大連接數

select count(*) from v$process 

select value from v$parameter where name = 'processes'