How to tune MySQL connection pool params in context.xml

Question

In Tomcat, your META-INF/context.xml file can contain a JNDI datasource object like so:

<Resource
    name="jdbc/dbLogging"
    auth="Container"
    type="javax.sql.DataSource"
    driverClassName="com.mysql.jdbc.Driver"
    url="jdbc:mysql://mysql.server.example.com:3306/my_db"
    username="my_user"
    password="my_password"

    maxActive="15"
    maxIdle="3"
    maxWait="-1"
/>

What calculations/algorithms/heuristics/etc. can I use to tune what the values of the connection pool settings (maxActive, maxIdle, maxWait, etc.) should be?

Are there any other major connection pool settings I'm overlooking here?

Answer 1

You may also use

<Context>
   ...
   <Resource name="jdbc/oralocal" auth="Container" type="javax.sql.DataSource"
         url="your URL"
         driverClassName="driver class name"
         username="dbuser" password="password"
         maxActive="20" 
         maxIdle="3" 
         maxWait="10000"
         poolPreparedStatements="true"
         maxOpenPreparedStatements="100"
         validationQuery="SQL Query" />
</Context>

Pooling of prepared statements and maximum open prepared statements also you can use to tune prepared statements.

have a Look at this