MySQL 事务没有提交导致 锁等待 Lock wait timeout exceeded
MySQL 事务没有提交导致 锁等待 Lock wait timeout exceeded
Lock wait timeout exceeded
当一个SQL执行完了，但未COMMIT，后面的SQL想要执行就是被锁，超时结束；
select * from information_schema.innodb_trx?之后找到了一个一直没有提交的只读事务，
kill 到了对应的线程后ok 了。
mysql> select * from information_schema.innodb_trx;
+--------+-----------+---------------------+-----------------------+------------------+------------+---------------------+-----------+---------------------+-------------------+-------------------+------------------+-----------------------+-----------------+-------------------+-------------------------+---------------------+-------------------+------------------------+----------------------------+---------------------------+---------------------------+ | trx_id | trx_state | trx_started ? ? ? ? | trx_requested_lock_id | trx_wait_started | trx_weight | trx_mysql_thread_id | trx_query | trx_operation_state | trx_tables_in_use | trx_tables_locked | trx_lock_structs | trx_lock_memory_bytes | trx_rows_locked | trx_rows_modified | trx_concurrency_tickets | trx_isolation_level | trx_unique_checks | trx_foreign_key_checks | trx_last_foreign_key_error | trx_adaptive_hash_latched | trx_adaptive_hash_timeout | +--------+-----------+---------------------+-----------------------+------------------+------------+---------------------+-----------+---------------------+-------------------+-------------------+------------------+-----------------------+-----------------+-------------------+-------------------------+---------------------+-------------------+------------------------+----------------------------+---------------------------+---------------------------+ | F663B ?| RUNNING ? | 2016-11-09 10:15:52 | NULL ? ? ? ? ? ? ? ? ?| NULL ? ? ? ? ? ? | ? ? ? ? 10 | ? ? ? ? ? ? ? 14310 | NULL ? ? ?| NULL ? ? ? ? ? ? ? ?| ? ? ? ? ? ? ? ? 0 | ? ? ? ? ? ? ? ? 0 | ? ? ? ? ? ? ? ?7 | ? ? ? ? ? ? ? ? ?1248 | ? ? ? ? ? ? ? 4 | ? ? ? ? ? ? ? ? 3 | ? ? ? ? ? ? ? ? ? ? ? 0 | REPEATABLE READ ? ? | ? ? ? ? ? ? ? ? 1 | ? ? ? ? ? ? ? ? ? ? ?1 | NULL ? ? ? ? ? ? ? ? ? ? ? | ? ? ? ? ? ? ? ? ? ? ? ? 0 | ? ? ? ? ? ? ? ? ? ? ?9999 | +--------+-----------+---------------------+-----------------------+------------------+------------+---------------------+-----------+---------------------+-------------------+-------------------+------------------+-----------------------+-----------------+-------------------+-------------------------+---------------------+-------------------+------------------------+----------------------------+---------------------------+---------------------------+ 1 row in set mysql> kill 14310 ; Query OK, 0 rows affected mysql>?