CODEWITHSUNDEEP
mysqltransaction-log
php-b-grader
php-b-grader

Reputation: 3315

Where can I find the MySQL transaction log?

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.

Upvotes: 26

Views: 76980

Answers (3)

Stephan van Ingen
Stephan van Ingen

Reputation: 51

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 {your-file-name.seq} 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

Upvotes: 3

Rob
Rob

Reputation: 45761

If you're using MySql on Windows, there's a file located in C:\Program Files\MySQL\MySQL Server 5.0\data (assuming a C: drive for the installation target and MySql version 5.0), that is called %COMPUTERNAME%.log that contains the commands that have been executed.

Upvotes: 1

zerkms
zerkms

Reputation: 254886

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

Upvotes: 18

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