mysql鎖表處理
阿新 • • 發佈：2020-09-07
mysql> select * from INNODB_LOCKS; +----------------------+-------------+-----------+-----------+-------------------------+-----------------+------------+-----------+----------+-----------+ | lock_id | lock_trx_id | lock_mode | lock_type | lock_table | lock_index |lock_space | lock_page | lock_rec | lock_data | +----------------------+-------------+-----------+-----------+-------------------------+-----------------+------------+-----------+----------+-----------+ | 259690955:466101:3:2 | 259690955 | X | RECORD | `mycommunity_cc`.`tmpa` | GEN_CLUST_INDEX |466101 | 3 | 2 | NULL | | 259690812:466101:3:2 | 259690812 | X | RECORD | `mycommunity_cc`.`tmpa` | GEN_CLUST_INDEX | 466101 | 3 | 2 | NULL | +----------------------+-------------+-----------+-----------+-------------------------+-----------------+------------+-----------+----------+-----------+2 rows in set (0.01 sec) mysql> show processlist; +---------+-------------+----------------------+--------------------------------+-------------+---------+-----------------------------------------------------------------------+------------------------------------------------------------------------------------------------------+ | Id | User | Host | db | Command | Time | State | Info | +---------+-------------+----------------------+--------------------------------+-------------+---------+-----------------------------------------------------------------------+------------------------------------------------------------------------------------------------------+ | 5256016 | yunshequ | 113.98.201.26:45118 | mycommunity_cc | Query | 4 | updating | update tmpa set id = 1 | | 5256554 | yunshequ | 113.98.201.26:45120 | mycommunity_cc | Sleep | 264 | | NULL | mysql> select * from 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 | trx_is_read_only | trx_autocommit_non_locking | +-----------------+-----------+---------------------+-----------------------+---------------------+------------+---------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+---------------------+-------------------+-------------------+------------------+-----------------------+-----------------+-------------------+-------------------------+---------------------+-------------------+------------------------+----------------------------+---------------------------+---------------------------+------------------+----------------------------+ | 259690955 | LOCK WAIT | 2020-09-07 00:50:34 | 259690955:466101:3:2 | 2020-09-07 00:56:24 | 2 | 5256016 | update tmpa set id = 1 | fetching rows | 1 | 1 | 2 | 1184 | 8 | 0 | 0 | READ COMMITTED | 1 | 1 | NULL | 0 | 10000 | 0 | 0 | | 259690812 | RUNNING | 2020-09-07 00:50:26 | NULL | NULL | 3 | 5256554 | NULL | NULL | 0 | 0 | 2 | 360 | 1 | 1 | 0 | READ COMMITTED | 1 | 1 | NULL | 0 | 10000 | 0 | 0 | | 329414178302056 | RUNNING | 2020-09-06 21:59:19 | NULL | NULL | 0 | 5118894 | NULL | NULL | 0 | 0 | 0 | 360 | 0 | 0 | 0 | READ COMMITTED | 1 | 1 | NULL | 0 | 10000 | 0 | 0 | | 329411454949480 | RUNNING | 2020-09-06 21:58:26 | NULL | NULL | 0 | 5118227 | NULL | NULL | 0 | 0 | 0 | 360 | 0 | 0 | 0 | READ COMMITTED | 1 | 1 | NULL | 0 | 10000 | 0 | 0 | mysql> SELECT * FROM information_schema.innodb_lock_waits; +-------------------+----------------------+-----------------+----------------------+-------------------+-----------------+ | requesting_trx_id | requested_lock_id | blocking_trx_id | blocking_lock_id | requesting_thd_id | blocking_thd_id | +-------------------+----------------------+-----------------+----------------------+-------------------+-----------------+ | 259690955 | 259690955:466101:3:2 | 259690812 | 259690812:466101:3:2 | 5256016 | 5256554 | +-------------------+----------------------+-----------------+----------------------+-------------------+-----------------+ SELECT * FROM information_schema.innodb_lock_waits; 鎖等待的對應關係 SELECT * FROM information_schema.innodb_locks; 當前出現的鎖 SELECT * FROM information_schema.innodb_trx; 當前執行的所有事務 SHOW ENGINE INNODB STATUS; https://blog.csdn.net/sanbingyutuoniao123/article/details/77878601