Mysql Innodb死锁解决

场景：在操作数据库的过程中，由于一些原因，如：事务未正常提交/回滚等造成数据库死锁，导致其他需要事务的操作出现锁等待超时的错误，Lock wait timeout exceeded; try restarting transaction。

查询数据库死锁的线程id：

SELECT * FROM information_schema.INNODB_TRX\G

查询结果如下：

mysql> SELECT * FROM information_schema.INNODB_TRX\G

************************** 1. row **************************

trx_id: 189324

trx_state: RUNNING

trx_started: 2017-02-17 10:00:00

trx_requested_lock_id: NULL

trx_wait_started: NULL

trx_weight: 3

trx_mysql_thread_id: 5

trx_query: NULL

trx_operation_state: NULL

trx_tables_in_use: 0

trx_tables_locked: 0

trx_lock_structs: 2

trx_lock_memory_bytes: 376

trx_rows_locked: 3

trx_rows_modified: 1

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

trx_is_read_only: 0

trx_autocommit_non_locking: 0

1 row in set (0.01 sec)

杀掉死锁线程：

kill 5;