# # innodb_print_all_deadlocks # -- source include/have_innodb.inc SELECT @@innodb_print_all_deadlocks; SET GLOBAL innodb_print_all_deadlocks=1; CREATE TABLE t1 (c1 INT, PRIMARY KEY (c1)) ENGINE=INNODB; INSERT INTO t1 VALUES (123); CREATE TABLE t2 (c2 INT, PRIMARY KEY (c2)) ENGINE=INNODB; INSERT INTO t2 VALUES (456); -- connect (con1,localhost,root,,) -- connect (con2,localhost,root,,) -- connection con1 BEGIN; SELECT * FROM t1 FOR UPDATE; -- connection con2 BEGIN; SELECT * FROM t2 FOR UPDATE; -- connection con1 -- send SELECT * FROM t2 FOR UPDATE; -- connection con2 let $wait_condition= SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE state = 'Sending data' AND info = 'SELECT * FROM t2 FOR UPDATE'; -- source include/wait_condition.inc -- error ER_LOCK_DEADLOCK SELECT * FROM t1 FOR UPDATE; -- connection default -- disconnect con1 -- disconnect con2 DROP TABLE t2; DROP TABLE t1; SET GLOBAL innodb_print_all_deadlocks=default;