Oracle查询数据库锁表和解除锁表

  oracle查询被锁定的表：

SELECT p.spid,
       c.object_name,
       b.session_id,
       a.serial#,
       b.oracle_username,
       b.os_user_name
 FROM v$process p, v$session a, v$locked_object b, all_objects c
 WHERE p.addr = a.paddr
  AND a.process = b.process
  AND c.object_id = b.object_id;

解除表的锁定：

DECLARE
  S_CMD VARCHAR2(2000);
BEGIN
  FOR X IN (SELECT p.spid,
       c.object_name,
       b.session_id,
       a.serial#,
       b.oracle_username,
       b.os_user_name
 FROM v$process p, v$session a, v$locked_object b, all_objects c
 WHERE p.addr = a.paddr
  AND a.process = b.process
  AND c.object_id = b.object_id) LOOP
     S_CMD := ''''||X.SESSION_ID||','||X.SERIAL#||'''';     
     BEGIN
       execute immediate 'alter system kill session '||S_CMD;
     exception
      when others then 
      DBMS_OUTPUT.PUT_LINE(SQLCODE||'---'||SQLERRM);
     end;    
  END LOOP;
END;