当前活跃的事务:
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TRANSACTIONS
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Trx id counter080157601
Purge done for trx's n:o <0 80154573 undo n:o <0 0
History list length 6
Total number of lock structs in row lock hash table 0
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 0 0, not started, process no 3396, OS thread id 1152440672
MySQL thread id 8080, query id 728900 localhost root
show innodb status
---TRANSACTION 0 80157600, ACTIVE 4 sec, process no 3396, OS thread id 1148250464, thread declared inside InnoDB 442
mysql tables in use 1, locked 0
MySQL thread id 8079, query id 728899 localhost root Sending data
select sql_calc_found_rows * from b limit 5
Trx read view will not see trx with id>= 0 80157601, sees <0 80157597
---TRANSACTION 0 80157599, ACTIVE 5 sec, process no 3396, OS thread id 1150142816 fetching rows, thread declared inside InnoDB 166
mysql tables in use 1, locked 0
MySQL thread id 8078, query id 728898 localhost root Sending data
select sql_calc_found_rows * from b limit 5
Trx read view will not see trx with id>= 0 80157600, sees <0 80157596
---TRANSACTION 0 80157598, ACTIVE 7 sec, process no 3396, OS thread id 1147980128 fetching rows, thread declared inside InnoDB 114
mysql tables in use 1, locked 0
MySQL thread id 8077, query id 728897 localhost root Sending data
select sql_calc_found_rows * from b limit 5
Trx read view will not see trx with id>= 0 80157599, sees <0 80157595
---TRANSACTION 0 80157597, ACTIVE 7 sec, process no 3396, OS thread id 1152305504 fetching rows, thread declared inside InnoDB 400
mysql tables in use 1, locked 0
MySQL thread id 8076, query id 728896 localhost root Sending data
select sql_calc_found_rows * from b limit 5
Trx read view will not see trx with id>= 0 80157598, sees <0 80157594
如果连接数量很大，InnoDB只能打印出其中的一部分，以维持整个列表的长度。
Transaction id是当前事务的标识符。Purge done for trx's n:o是回收程序启动事务的数量。如果回收程序没有运行事务，InnoD
