MySQL: To find blocking locking transactions
to see what is in the buffer: SHOW ENGINE INNODB STATUS; Find the thread ID (ID column) SHOW FULL PROCESSLIST; To kill the process, run the command kill ID; Other helpful SQLs: show variables like 'innodb_lock_wait_timeout'; SHOW GLOBAL VARIABLES LIKE 'innodb_rollback_on_timeout'; SHOW GLOBAL STATUS LIKE 'com_rollback'; SHOW ENGINE INNODB STATUS; SHOW FULL PROCESSLIST; SELECT * FROM performance_schema.data_lock_waits; SELECT * FROM performance_schema.events_statements_history WHERE `THREAD_ID` = 1254; SELECT min(`THREAD_ID`), max(`THREAD_ID`) FROM performance_schema.events_statements_history; SELECT @@performance_schema_events_statements_history_size; SELECT @@performance_schema_events_statements_history_long_size; UPDATE performance_schema.setup_consumers SET enabled = 'YES' WHERE name = 'events_statements_history_long'; SELECT count(`THREAD_ID`) FROM performance_schema.events_statements_history_long; SELECT * FROM performance_schema.d...