Handler

MySQL Enterprise Monitor (MEM) has by default no Event Handlers created and activated. These Event Handlers you have to define yourself according to your needs.

In this article we discuss how to create MySQL Enterprise Monitor Event Handlers with MEM v.3.0.18. For other (older) versions the steps may vary…

Task: Event Handler for maximum Connections reached

We would like to be notified by MySQL Enterprise Monitor when the number of connections is near to max_connections.

For this we search first …

Because I do a lot of Performance Tuning gigs I get often in contact with these status variables. In the beginning I had a problem to understand them and now I have a problem to memorize the relation of the name and the meaning. Therefore I wrote this little summary:

Prepare the example

To show you the effect I have worked out a little example:

CREATE TABLE test (
    id    INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY
  , data  VARCHAR(32)
  , ts    TIMESTAMP
  , INDEX (data)
);

INSERT INTO test
VALUES …