> 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-installation-overview-cp/archive-installation/archive-installation-process/use-postgresql-as-your-repository-database-archive-installation/perform-tomcat-specific-connection-tasks/step-1-download-driver-and-apply-to-the-pentaho-server-reuse.md).

# Step 1: Download driver and apply to the Pentaho Server

To connect to a database, including the Pentaho Repository database, you will need to download and copy a JDBC driver to the appropriate places for the Pentaho Server as well as on the web application server.

**Note:** Due to licensing restrictions, Pentaho cannot redistribute some third-party database drivers. You must download and install the file yourself.

1. Download a JDBC Driver JAR from your database vendor or a third-party driver developer.

   The [JDBC drivers reference](/install/9.3-install/jdbc-drivers-reference.md) has a list of supported drivers.
2. Copy the JDBC driver JAR you just downloaded to the `pentaho/server/pentaho-server/tomcat/lib` folder.
3. Copy the [`hsqldb-2.3.2.jar`](https://sourceforge.net/projects/hsqldb/files/hsqldb/hsqldb_2_3/) file to `pentaho-server/tomcat/lib` if you want to retain the sample provided by Pentaho.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.pentaho.com/install/9.3-install/pentaho-installation-overview-cp/archive-installation/archive-installation-process/use-postgresql-as-your-repository-database-archive-installation/perform-tomcat-specific-connection-tasks/step-1-download-driver-and-apply-to-the-pentaho-server-reuse.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.