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How to install APR native libraries for JBoss AS 7 (7.0.2 and 7.1.0) and enable AJP connector for improved performance in JVM Host's shared Java hosting or VPS environment

Memory usage, class and thread number comparison of Java application servers and applications with graphs will help you to find out suitable Java hosting product

How to use custom TrueType Fonts with Java, JSP or servlets in JVM Host environment to generate images and reports

Tomcat virtual hosts, multiple domains and Java applications combined at JVM Host

How to build and host your databased driven Grails application guide by JVM Host

Another kind of error that can occur when hosting your Java application on external Java host running JVM with different heap settings than your development environment is 'GC overhead limit exceeded'. What documentation says: Excessive GC Time and OutOfMemoryError The parallel collector will throw an OutOfMemoryError if too much time is being spent in garbage collection: if more than 98% of the total time is spent in garbage collection and less than 2% of the heap is recovered, an OutOfMemoryError will be thrown. This feature is designed to prevent applications from running for an extended period of time while making little or no progress because the heap is too small. If necessary, this feature can be disabled by adding the option-XX:-UseGCOverheadLimit to the command line...

Put your application files directly in ~/appservers/apache-tomcat/webapps/ROOT directory or create default context in server.xml and set it like shown below. Optionally you can map additional or all requests to your tomcat using our custom JVM control panel - JVMCP. Also you may want to make sure that you have welcome-file-list populated in your application's WEB-INF/web.xml...

With Tomcat running on JVM Host dedicated JVM you have full control over configuration files. You may host multiple domains and map them to particular web applications. See the below example...

Sometimes Java hosting clients need ability to combine their Java code with PHP code. This is sometimes done by leaving PHP code in a directory under Apache Document Root (e.g. ~/public_html/drupal) and excluding requests to it from being passed to a Java application server e.g. Tomcat. It is helpful in separating Java and PHP applications running within 1 hosting account and static data like images, CSS, JavaScript. But there are cases when you need much closer integration of Java and PHP...

We provide our clients with ability to map selected URLs or URL patterns to their application servers so that they could use Java and other language based applications in parallel from 1 account. An example is to have Drupal PHP application and several Java servlets or JSP pages. You might then map everything '/' (we also call it catch-all mapping) and unmap requests that begin with '/drupal' from being passed to a Java application server...

At JVM Host by default we offer MySQL and PostgreSQL and we recommend the following drivers: - MySQL Connector/J driver connection string looks like "jdbc:mysql://[hostname]:[port]/[db_name]" You can find the driver on MySQL website at http://www.mysql.com/products/connector/j/ Example driver archive name: mysql-connector-java-5.1.5-bin.jar - PostgreSQL driver connection string looks like "jdbc:postgresql://[hostname]:[port]/[db_name]" You can find the driver on PostgreSQL website at http://jdbc.postgresql.org/ Example driver archive name: postgresql-8.3-603.jdbc3.jar - If you use MS/SQL you may try...

In Java hosting there are 2 basic ways you can secure data flow to/from your application server. 1. Get dedicated IP and setup SSL certificate for your domain in cPanel. This will secure any requests to your domain on HTTPS port, no matter if they are to be served by Apache or by Tomcat thanks to internal mapping of selected or all requests between Apache web server and your application server e.g. Apache Tomcat. The mapping is made internally (within the same machine over loopback intrface) via either mod_jk or mod_proxy_ajp. You can choose mapping method and include or exclude URLs using JVMHost.com custom JVM control panel (JVMCP). 2. Install SSL certificate directly in application server using shared or dedicated IP. We will use JDK 1.6.0 and Tomcat 7 as example in this article and describe method 2 as method 1 is easy and self-explaining. Let's go!...

I will show you on a real example where we will create a simple page with form to enter Unicode strings and display them. The strings will be saved to MySQL database. We will create UTF-8 database and use JDBC to connect to it from our JSP code. Let's go!...

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