mysql执行update提示ERROR1205(HY000):Lockwaittimeoutexceeded;tryrestartingtransaction的应急解决方法

1、执行show full processlist;查看所有mysql线程

2、执行SELECT * FROM information_schema.INNODB_TRX\G;结果如下：

mysql> SELECT * FROM information_schema.INNODB_TRX\G;
*************************** 1. row ***************************
                    trx_id: 14CDCFB
                 trx_state: RUNNING
               trx_started: 2015-05-13 15:26:06
     trx_requested_lock_id: NULL
          trx_wait_started: NULL
                trx_weight: 6
       trx_mysql_thread_id: 14381923
                 trx_query: NULL
       trx_operation_state: NULL
         trx_tables_in_use: 0
         trx_tables_locked: 0
          trx_lock_structs: 4
     trx_lock_memory_bytes: 1248
           trx_rows_locked: 2
         trx_rows_modified: 2
   trx_concurrency_tickets: 0
       trx_isolation_level: REPEATABLE READ
         trx_unique_checks: 1
    trx_foreign_key_checks: 1
trx_last_foreign_key_error: NULL
 trx_adaptive_hash_latched: 0
 trx_adaptive_hash_timeout: 10000
1 row in set (0.00 sec)

ERROR:
No query specified

3、于是执行kill 14381923;

执行后恢复正常