Mysql必读查找MySQL线程中死锁的ID的方法

mysql> set @@autocommit=0;
Query OK, 0 rows affected (0.00 sec)
mysql> use test;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+―――――-+
| Tables_in_test |
+―――――-+
| demo_test   |
| t3       |
+―――――-+
2 rows in set (0.00 sec)
mysql> select * from t3;
+―-+――C+――C+――――+―-+―-+―-+
| id | fname | lname | birthday  | c1 | c2 | c3 |
+―-+――C+――C+――――+―-+―-+―-+
| 19 | lily19 | lucy19 | 2013-04-18 | 19 | 0 | 0 |
| 20 | lily20 | lucy20 | 2013-03-13 | 20 | 0 | 0 |
+―-+――C+――C+――――+―-+―-+―-+
2 rows in set (0.00 sec)
mysql> update t3 set birthday = '2022-02-23' where id = 19;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select connection_id();
+―――――C+
| connection_id() |
+―――――C+
|       16 |
+―――――C+
1 row in set (0.00 sec)
mysql> 

mysql> use test;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select @@autocommit;
+――――C+
| @@autocommit |
+――――C+
|      1 |
+――――C+
1 row in set (0.00 sec)
mysql> update t3 set birthday='2018-01-03' where id = 19;
ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction
mysql> select connection_id();
+―――――C+
| connection_id() |
+―――――C+
|       17 |
+―――――C+
1 row in set (0.00 sec)
mysql> show processlist;
+―-+――+―――C+――+―――+――+――-+――――――+
| Id | User | Host   | db  | Command | Time | State | Info       |
+―-+――+―――C+――+―――+――+――-+――――――+
| 10 | root | localhost | NULL | Sleep  | 1540 |    | NULL       |
| 11 | root | localhost | NULL | Sleep  | 722 |    | NULL       |
| 16 | root | localhost | test | Sleep  | 424 |    | NULL       |
| 17 | root | localhost | test | Query  |  0 | init | show processlist |
| 18 | root | localhost | NULL | Sleep  |  5 |    | NULL       |
+―-+――+―――C+――+―――+――+――-+――――――+
5 rows in set (0.00 sec)
mysql> show engine innodb status\G
――――
TRANSACTIONS
――――
Trx id counter 189327
Purge done for trx's n:o < 189323 undo n:o < 0 state: running but idle
History list length 343
LIST OF TRANSACTIONS FOR EACH SESSION:
―TRANSACTION 0, not started
MySQL thread id 11, OS thread handle 0x7f70a0c98700, query id 994 localhost root init
show engine innodb status
―TRANSACTION 189326, ACTIVE 2 sec starting index read
mysql tables in use 1, locked 1
LOCK WAIT 2 lock struct(s), heap size 376, 1 row lock(s)
MySQL thread id 17, OS thread handle 0x7f70a0bd5700, query id 993 localhost root updating
update t3 set birthday='2018-01-03' where id = 19
――- TRX HAS BEEN WAITING 2 SEC FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 529 page no 3 n bits 72 index `PRIMARY` of table `test`.`t3` trx id 189326 lock_mode X waiting
Record lock, heap no 2 PHYSICAL RECORD: n_fields 9; compact format; info bits 0
0: len 2; hex 3139; asc 19;;
1: len 6; hex 00000002e38c; asc    ;;
2: len 7; hex 7e00000d2827c9; asc ~  (' ;;
3: len 6; hex 6c696c793139; asc lily19;;
4: len 6; hex 6c7563793139; asc lucy19;;
5: len 3; hex 8fcc57; asc  W;;
6: len 4; hex 80000013; asc   ;;
7: len 4; hex 80000000; asc   ;;
8: len 4; hex 80000000; asc   ;;
――――――
―TRANSACTION 189324, ACTIVE 641 sec
2 lock struct(s), heap size 376, 3 row lock(s), undo log entries 1
MySQL thread id 16, OS thread handle 0x7f70a0b94700, query id 985 localhost root cleaning up
Trx read view will not see trx with id >= 189325, sees < 189325

mysql> SELECT * FROM information_schema.INNODB_TRX\G
*************************** 1. row ***************************
          trx_id: 189324
        trx_state: RUNNING
       trx_started: 2013-04-18 17:48:14
  trx_requested_lock_id: NULL
     trx_wait_started: NULL
        trx_weight: 3
   trx_mysql_thread_id: 16
        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)
mysql>