MySQL Cluster Transactions Test

Rollbacks are costly operations on the database. This test monitors the percentage of rollbacks happening for user transactions on each node of the target MySQL Cluster database server.

Target of the test : A MySQL Cluster

Agent deploying the test : A remote agent

Outputs of the test : One set of results for each node in the target MySQL Cluster database server being monitored

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.

Host

The host for which the test is to be configured.

Port

The port at which the specified host listens.

Database

Specify the name of a database on the target MySQL Cluster database server being monitored

Username and Password

The eG agent has to be configured with the credentials of a user who has server-wide Process and Select privileges on the monitored MySQL Cluster database server. To know how to create such a user, refer to Pre-requisites for Monitoring the MySQL Cluster Database Server topic.

Confirm Password

Confirm the password by retyping it here.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

User commits

Indicates the number of internal COMMIT commands issued on this node sduring the last measurement period.

Number

 

User rollbacks

Indicates the number of internal ROLLBACK commands issued on this node during the last measurement period.

Number

Ideally, there should be few user rollbacks happening.

Rollbacks

Indicates the number of internal rollbacks expressed as a percentage of the total transactions with this node.

Percent

Ideally, there should be few user rollbacks happening.