> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/install/9.3-install/pentaho-configuration/tasks-to-be-performed-by-an-it-administrator/configure-the-pentaho-server/specify-data-connections-for-the-pentaho-server/jdbc-database-connections/set-up-jndi-connections-for-the-pentaho-server.md).

# Set up JNDI connections for the Pentaho Server

Instructions for adding JNDI connections vary depending on which web application server you are using.

* If you installed the Pentaho Server using the Pentaho Installation Wizard, you are using a [Tomcat](http://tomcat.apache.org/) web application server.
* If you installed the Pentaho Server using the manual installation method, you are using either a [Tomcat](http://tomcat.apache.org/) or [JBoss](http://www.jboss.org/overview/) web application server.

If you installed the Pentaho Server using the manual installation method, then you specified data connections to your Tomcat or JBoss web application server. If you want to modify existing connections or define more JNDI connections, perform the appropriate set of instructions below.

This material is only for IT administrators who know where data is stored, how to connect to it, details about the computing environment, and how to use the command line to issue commands for Microsoft Windows or Linux. You should also know how to install a database and a web application server.


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