Mysql自帶查詢阻塞語句

 

select r.trx_id waiting_trx_id, r.trx_mysql_thread_Id waiting_thread,
       r.trx_query waiting_query, b.trx_id blocking_trx_id,
       b.trx_mysql_thread_id blocking_thread, b.trx_query blocking_query
  from information_schema.innodb_lock_waits w inner join information_schema.innodb_trx b on b.trx_id = w.blocking_trx_id
  inner join information_schema.innodb_trx r on r.trx_id = w.requesting_trx_id;

比較完整的:

SELECT    
p2.`HOST` 被阻塞方host,
p2.`USER` 被阻塞方用戶,
r.trx_id 被阻塞方事務id,    
        r.trx_mysql_thread_id 被阻塞方線程號,    
        TIMESTAMPDIFF(    
            SECOND,    
            r.trx_wait_started,    
            CURRENT_TIMESTAMP    
        ) 等待時間,    
        r.trx_query 被阻塞的查詢,    
        l.lock_table 阻塞方鎖住的表,  
        m.`lock_mode` 被阻塞方的鎖模式,
        m.`lock_type`  "被阻塞方的鎖類型(表鎖仍是行鎖)",
        m.`lock_index` 被阻塞方鎖住的索引,
        m.`lock_space` 被阻塞方鎖對象的space_id,
        m.lock_page 被阻塞方事務鎖定頁的數量,
        m.lock_rec 被阻塞方事務鎖定行的數量,
        m.lock_data  被阻塞方事務鎖定記錄的主鍵值,  
        p.`HOST` 阻塞方主機,
        p.`USER` 阻塞方用戶,
        b.trx_id 阻塞方事務id,    
        b.trx_mysql_thread_id 阻塞方線程號, 
        b.trx_query 阻塞方查詢, 
        l.`lock_mode` 阻塞方的鎖模式,
        l.`lock_type` "阻塞方的鎖類型(表鎖仍是行鎖)",
        l.`lock_index` 阻塞方鎖住的索引,
        l.`lock_space` 阻塞方鎖對象的space_id,
        l.lock_page 阻塞方事務鎖定頁的數量,
        l.lock_rec 阻塞方事務鎖定行的數量,
        l.lock_data 阻塞方事務鎖定記錄的主鍵值,         
      IF (p.COMMAND = 'Sleep', CONCAT(p.TIME,' 秒'), 0) 阻塞方事務空閒的時間           
    FROM    
        information_schema.INNODB_LOCK_WAITS w    
    INNER JOIN information_schema.INNODB_TRX b ON b.trx_id = w.blocking_trx_id    
    INNER JOIN information_schema.INNODB_TRX r ON r.trx_id = w.requesting_trx_id    
    INNER JOIN information_schema.INNODB_LOCKS l ON w.blocking_lock_id = l.lock_id  AND l.`lock_trx_id`=b.`trx_id`
      INNER JOIN information_schema.INNODB_LOCKS m ON m.`lock_id`=w.`requested_lock_id` AND m.`lock_trx_id`=r.`trx_id`
    INNER JOIN information_schema. PROCESSLIST p ON p.ID = b.trx_mysql_thread_id   
 INNER JOIN information_schema. PROCESSLIST p2 ON p2.ID = r.trx_mysql_thread_id 
    ORDER BY    
        等待時間 DESC \G;

沒有阻塞的狀況: