Skip navigation links
13.8 MySQL Utility Statements »
Section Navigation      [Toggle]

13.7.6.6. RESET Syntax

RESET reset_option [, reset_option] ...

The RESET statement is used to clear the state of various server operations. You must have the RELOAD privilege to execute RESET.

RESET acts as a stronger version of the FLUSH statement. See Section 13.7.6.3, “FLUSH Syntax”.

The RESET statement causes an implicit commit. See Section 13.3.3, “Statements That Cause an Implicit Commit”.

reset_option can be any of the following:

  • MASTER

    Deletes all binary logs listed in the index file, resets the binary log index file to be empty, and creates a new binary log file.

  • QUERY CACHE

    Removes all query results from the query cache.

  • SLAVE

    Makes the slave forget its replication position in the master binary logs. Also resets the relay log by deleting any existing relay log files and beginning a new one.

Copyright © 1997, 2012, Oracle and/or its affiliates. All rights reserved. Legal Notices

User Comments

Posted by Daevid Vincent on December 23 2009 8:48pm[Delete] [Edit]

Just a word of caution, if you're using replication, then DO NOT use the "RESET MASTER" to consolidate your mysql-bin.00000X files.

This page fails to be explicit about mentioning what this page does, nor is there even a link to this critical information:
http://dev.mysql.com/doc/refman/5.0/en/reset-master.html

The correct command is "PURGE BINARY LOGS"
http://dev.mysql.com/doc/refman/5.0/en/purge-binary-logs.html

Posted by Derek Downey on September 4 2011 3:07am[Delete] [Edit]

It may be obvious, but RESET commands are not written to the Binary Log.

This is particularly pertinent to RESET QUERY CACHE command.

Add your own comment.