Apache tomcat web server how to#

This article shows you how to build a container with Apache Tomcat and a simple Web application, deploy the container to a Service Fabric cluster running Linux, and connect to the Web application. Edit this fileВ in your Confluence installation: /confluence/WEB-INF/web.xml. Apache Tomcat is a popular, open-source implementation of the Java Servlet and Java Server technologies.To do this, you will need to set the 'validationQuery' option on the database connection pool. However, the Commons DBCP (Database Connection Pool) which is used by the Tomcat application server can validate connections before issuing them by running a simple SQL query, and if a broken connection is detected, a new one is created to replace it.

Why is the validationQuery element needed? When a database server reboots, or there is a network failure, all the connections in the connection pool are broken and this normally requires a Application Server reboot.If specified, this query MUST be an SQL SELECT statement that returns at least one row. validationQuery - SQL query that can be used by the pool to validate connections before they are returned to the application.user - Database username to be passed to our JDBC driver.

(For backwards compatibility, the property driverName is also recognized.)

url - Connection URL to be passed to our JDBC driver.

password - Database password to be passed to our JDBC driver.

maxWaitMillis - The maximum number of milliseconds that the pool will wait (when there are no available connections) for a connection to be returned before throwing an exception.

maxIdle - The maximum number of connections that can sit idle in this pool at the same time.

maxTotal - The maximum number of active instances that can be allocated from this pool at the same time.

driverClassName - Fully qualified Java class name of the JDBC driver to be used.

Here are the configuration properties for Tomcat's standard data source resource factory ( .dbcp.BasicDataSourceFactory): If switching from a direct JDBC connection to datasource, you can find the above details in your / file.

In the url parameter, replace the word ' yourDatabaseName' with the name of the database your Confluence data will be stored in.

Replace the username and password parameters with the correct values for your database.

Apache tomcat web server