solve_lock-1024-大功告成

create or replace procedure solve_lock_061203(v_msg out varchar2)

 as

  v_sql varchar2(3000); --定义 v_sql 接受抓取锁的sql语句

  kill_sid    number;
  kill_serial number;

  cur_lock   sys_refcursor; --定义游标变量，循环执行抓取锁的sql语句
  cur_lock02 sys_refcursor;

  type tp_lock is record( --定义 record类型的 变量
    v_sid       number,
    v_type      varchar2(10),
    v_id1       number,
    v_id2       number,
    v_lmode     varchar2(200),
    v_request   varchar2(200),
    v_lock_time number,
    v_block     number);
  records_lock tp_lock;

  type tp_lock02 is record(
    waiting_sid   number,
    waiting_sql   varchar2(1000),
    blocker_event varchar2(1000),
    blocking_sid  number,
    blocking_sql  varchar2(1000));
  records_lock02 tp_lock02;

  v_blocking_sid number;
  v_waiting_sid  number;

begin
  v_msg := '';
  v_sql := '';

  v_msg := v_msg ||
           '------------------查找数据库中是否有锁阻塞、锁等待的情况------------------' ||
           chr(10);
  --  DBMS_OUTPUT.PUT_LINE('------------------查找数据库中是否有锁阻塞、锁等待的情况------------------');
  v_sql := 'select sid,type,id1,id2,
decode(lmode,0, ''none'',1,''null'', 2, ''row share'' ,3, ''row exclusive'' ,4, ''share'' ,5, ''share row exclusive'' ,6 ,''exclusive'' ,''null'') lock_type,
decode(request,0, ''none'',1,''null'', 2, ''row share'' ,3, ''row exclusive'' ,4, ''share'' ,5, ''share row exclusive'' ,6 ,''exclusive'' ,''hull'') lock_request,
ctime,block from v$lock where type in (''TM'',''TX'')';

  open cur_lock for v_sql;
  loop
    fetch cur_lock
      into records_lock;
    exit when cur_lock%notfound;
 
    if records_lock.v_request <> 'none' then
      --抓取发出请求锁的会话
    
      v_msg := v_msg || 'waiting sid: ' || records_lock.v_sid ||
               ' is request a lock ,lock_mode is ' ||
               records_lock.v_request || ' and being locked ' ||
               records_lock.v_lock_time || 's' || chr(10);
      --dbms_output.put_line('waiting sid: '||records_lock.v_sid||' is request a lock ,lock_mode is '||records_lock.v_request||' and being locked '|| records_lock.v_lock_time||'s');
      v_waiting_sid := records_lock.v_sid;
    end if;
 
    if records_lock.v_block <> 0 then
      --抓取发生锁阻塞的会话
      v_msg := v_msg || 'blocking sid: ' || records_lock.v_sid ||
               ' is make a lock , lock_mode is ' || records_lock.v_lmode ||
               chr(10);
    
      /* dbms_output.put_line('blocking sid: ' || records_lock.v_sid ||
      ' is make a lock , lock_mode is ' ||
      records_lock.v_lmode);*/
      v_blocking_sid := records_lock.v_sid;
    end if;
 
  end loop;
  close cur_lock;
  v_sql := '';

  v_msg := v_msg ||
           '------------------查找产生锁的会话、锁等待的会话------------------------' ||
           chr(10);
  --  dbms_output.put_line('------------------查找产生锁的会话、锁等待的会话------------------------');
  v_sql := 'select distinct waiter.sid "waiting_sid",w_sql.sql_text "sql from waiting session",blocker.event "blocker event",blocker.sid "blocking sid",
b_sql.sql_text "sql from blocking session"  from v$session waiter, v$session blocker,v$sql w_sql,v$sql b_sql
where waiter.event=''enq: TX - row lock contention'' and waiter.blocking_session=blocker.sid
and w_sql.sql_id=waiter.sql_id
and b_sql.sql_id =nvl(blocker.sql_id,blocker.prev_sql_id)';

  open cur_lock02 for v_sql;
  loop
    fetch cur_lock02
      into records_lock02;
    exit when cur_lock02%notfound;
 
    if records_lock02.waiting_sid is not null then
      v_msg := v_msg || 'waiting sid: ' || records_lock02.waiting_sid ||
               ' wait_sql is : ' || records_lock02.waiting_sql || chr(10);
      /* dbms_output.put_line('waiting sid: ' || records_lock02.waiting_sid ||
      ' wait_sql is : ' || records_lock02.waiting_sql);*/
    end if;
 
    if records_lock02.blocking_sid is not null then
      v_msg := v_msg || 'blocking sid: ' || records_lock02.blocking_sid ||
               ' block_sql is : ' || records_lock02.blocking_sql || chr(10);
      /* dbms_output.put_line('blocking sid: ' || records_lock02.blocking_sid ||
      ' block_sql is : ' ||
      records_lock02.blocking_sql);*/
    end if;
  end loop;
  close cur_lock02;

  v_msg := v_msg || '------------------解决 锁阻塞、锁等待------------------' ||
           chr(10);
  --  dbms_output.put_line('------------------解决 锁阻塞、锁等待------------------');

  select sid, serial#
    into kill_sid, kill_serial
    from v$session
   where sid = v_blocking_sid;
  v_msg := v_msg || 'action: alter system kill session ( ' || kill_sid || ',' ||
           kill_serial || ')' || chr(10);
  /*  dbms_output.put_line('action: alter system kill session ( ' || kill_sid || ',' ||
  kill_serial || ')');*/

exception
  when no_data_found then
    v_msg := v_msg || sqlerrm;
    /* dbms_output.put_line(sqlcode || sqlerrm);*/

end solve_lock_061203;