ORA-00054:资源正忙，要求指定NOWAIT

--ORA-00054:资源正忙，要求指定NOWAIT--
--以DBA角色, 查看当前数据库里锁的情况可以用如下SQL语句--
SELECT sid, serial#, username, osuser FROM v$session WHERE sid IN(SELECT session_id FROM v$locked_object);

--杀掉锁--
ALTER SYSTEM KILL SESSION 'sid,serial#';

ALTER SYSTEM KILL SESSION '151,48674';


--生成序号的函数--
 CREATE OR REPLACE FUNCTION BDLLY.fn_Reg_ywdjh(fn_rq date)
    RETURN varchar2 IS
    v_char varchar2(200);
    v_max  varchar2(100);

   BEGIN
      --查询出最大的业务登记号--
      SELECT max(ywdjh) INTO v_max FROM bdlly_2v.qtywb@"BDLLY2V_LINK.REGRESS.RDBMS.DEV.US.ORACLE.COM" WHERE TO_CHAR(rq,'YYYY-MM-DD')=TO_CHAR(fn_rq,'YYYY-MM-DD');
      IF v_max IS NULL  
       THEN
        v_char := to_char(fn_rq,'yyyymmdd')||'0001';
      ELSE
        v_char := to_char((to_number(v_max) + 1));
      END IF;
      commit;
      RETURN v_char;

   END fn_Reg_ywdjh;
/

--调用--

SELECT BDLLY.fn_Reg_ywdjh(RQ) FROM BDLLY_2V.QTYWB;