Where can I find the MySQL transaction log?

Question

Does MySQL keep a transaction log and if so where could I find it?

A number of rows have mysteriously been deleted from a table and I want to try and see how and when it occurred.

Answer 1

If you turned on - mysql can track binary log , which contains all the modifications (to be clear - it contains the queries that had changed something).

But anyway, it is useless if you do not have the initial dump, which precedes the binlog turning on. Also i suppose if you made the dump and turned on binlog - you would not ask such question :-S

Answer 2

http://dev.mysql.com/doc/refman/5.1/en/query-log.html

http://dev.mysql.com/doc/refman/5.1/en/binary-log.html

Answer 3

如果你在Windows上使用MySql，那么有一个文件位于C:\\Program Files\\MySQL\\MySQL Server 5.0\\data （假设安装目标的C：驱动器和MySql版本5.0），称为％COMPUTERNAME％。包含已执行命令的日志。

Answer 4

Short answer: not by default.

In order to have accurate logging results, you need to have started the server in binary logging mode first, using the parameter --log-bin=your-file-name . It then creates a binary log file <> where seq is a sequence number for subsequent log files (recommended to put your file name there, with explicit directory location).

More information on the MySQL site explaining all the details: https://dev.mysql.com/doc/refman/5.7/en/binary-log.html