Amazon Redshift JDBC Driver Connection: 4 Easy Steps

on Amazon Redshift, AWS, Data Warehouse, Data Warehouses, ETL, JDBC, Tutorials • October 15th, 2020 • Write for Hevo

Amazon Redshift JDBC Driver Connection FI

Are you looking to create an Amazon Redshift JDBC (Java Database Connectivity) Driver connection? We have you covered. Amazon Redshift is a fully managed, scalable, and fast Data Warehouse used by companies to analyze data on a petabyte-scale with advanced built-in security features. However, you may not be able to draw so many insights from your Amazon Redshift data. The reason is that Amazon Redshift doesn’t provide advanced tools for data analysis. 

Hence, you may need to move your data from Amazon Redshift into Business Intelligence tools or other third-party applications. This is possible by setting up the Amazon Redshift JDBC Driver connection. It lets you establish a connection to Amazon Redshift and move your data to third-party applications for analytics. 

In this article, you will learn how to set up the Amazon Redshift JDBC Driver connection. You will also explore the key benefits and limitations of setting up this connection in further sections. Let’s get started

Table of Contents

Prerequisites

  • An Amazon Redshift account. 
  • Amazon Redshift JDBC Driver. 

Introduction to Amazon Redshift

Amazon Redshift Logo
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Amazon Redshift is a Cloud-Based Data Warehouse solution that makes integrating and storing massive volumes of data for analysis and manipulation a breeze.

Amazon Redshift architecture consists of a number of computing resources known as Nodes, which are then grouped into Clusters. The major benefit of Amazon Redshift is its great scalability and quick query processing, which has made it one of the most popular Data Warehouses even today. Moreover, using the AWS (Amazon Web Services) Console or Cluster APIs (Application Programming Interface), you can easily scale up your storage and processing performance demands by adding Nodes in a few clicks. It’s as simple as that.

Amazon Redshift Architecture
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To know more about Amazon Redshift, visit this link.

Importance of Amazon Redshift JDBC Driver Connection

Amazon Redshift provides companies with a data storage solution in the cloud. It allows companies to store huge volumes of data, running up to petabytes in size. Data is a great source of knowledge. 

If a business analyzes its data well, it can extract meaningful insights good for decision making. This can help the business know what is working and what is not working. 

The insights extracted from the data can help the business know where to make adjustments/improvements to reach more customers and generate more revenue. However, Amazon Redshift doesn’t provide businesses with advanced tools for data analytics. 

This means that such businesses should be able to move data from Amazon Redshift to advanced Data Analytics tools. This is what the Amazon Redshift JDBC Driver connection helps you achieve. You can use it to move data from Amazon Redshift to your Business Intelligence tool smoothly and then analyze the data to extract insights for decision making. 

To know more about the Amazon Redshift JDBC Driver, visit this link.

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Steps to Set Up Amazon Redshift JDBC Driver Connection

There are different ways through which you can connect to the Amazon Redshift database that runs on AWS. Remember that Amazon Redshift is a variant of PostgreSQL, hence, you can use the PostgreSQL JDBC Driver. However, AWS provides Amazon Redshift users with a Redshift-specific JDBC Driver. With this, you can easily set up the Amazon Redshift JDBC Driver connection.

So, if you need to connect using AWS/Redshift-specific features such as logging in with AWS security credentials and using temporary security tokens, use the Amazon Redshift JDBC Driver. If you need to access Amazon Redshift in a more vanilla way, use the PostgreSQL Driver. 

Here is the link to the official page from where you can download the Amazon Redshift JDBC Driver:

https://docs.aws.amazon.com/redshift/latest/mgmt/configure-jdbc-connection.html

Download and unzip the zip file. When connecting to Amazon Redshift via JDBC, you will need the class name of the driver. The class name will depend on the version of the JDBC spec that you are using. 

For instance, if you’re using version 4.2 of the spec, then the class name should be:

com.amazon.redshift.jdbc42.Driver

Below are the steps you can follow to easily set up the Amazon Redshift JDBC Driver connection:

Step 1: Get the JDBC URL

Other than the class name, you’ll need a JDBC URL to connect to the Amazon Redshift database. The URL takes the following format:

jdbc:redshift://endpoint:port/database

Where the endpoint parameter denotes the endpoint of the Amazon Redshift cluster, port parameter denotes the port number that you specified when launching the cluster and database parameter is the name of the database that you created for your cluster. 

Here is an example of a valid JDBC URL:

jdbc:redshift://acluster.xyz103abc624.us-west-2.redshift.amazonaws.com:5439/dev

Step 2: Configure Authentication and SSL for Amazon Redshift JDBC Driver Connection

You should configure the Amazon Redshift JDBC Driver to authenticate your connection based on the security requirements of the Amazon Redshift server you need to connect to. This requires specifying your Amazon Redshift username and password. 

The following URL shows how to connect to the Amazon Redshift database named company using the standard login and password:

jdbc:redshift://redshift-test2.abcdefg.us-east-1.redshift.amazonaws.com:5439/company?ssl=true&tcpKeepAlive=true

Step 3: Configure TCP keepalives for Amazon Redshift JDBC Driver Connection

The Amazon Redshift JDBC Driver uses TCP (Transmission Control Protocols) keepalives by default to prevent connections from timing out. You can specify when the driver should begin sending keepalive packets or simply disable the feature. 

The following URL shows how to connect to a Redshift database named company using the standard login and password with TCP keep alive turned on and SSL encryption enabled:

jdbc:redshift://redshift-test2.abcdefg.us-east-1.redshift.amazonaws.com:5439/company?ssl=true&tcpKeepAlive=true

Notice that the values for the ssl and tcpKeepAlive parameters have been set to true. 

Step 4: Sample Java Code

The following is a sample Java code that shows how to use the Amazon Redshift JDBC driver to establish a connection to the database:

Class dbDriver = Class.forName("com.amazon.redshift.jdbc42.Driver");
String jdbcURL = "jdbc:redshift:iam://redshift-test2.abcdefg.us-east-1.redshift.amazonaws.com:5439/company?AccessKeyID=XYZ&SecretAccessKey=BCD&DbUser=admin&ssl=true&tcpKeepAlive=true";
Connection connection = DriverManager.getConnection(jdbcURL);
Statement statement = connection.createStatement();
ResultSet rs = statement.executeQuery("select * from Employees");
while(rs.next())
{
System.out.println("Employee id = " + rs.getInt("id"));
            System.out.println("Employee name = " + rs.getString("name"));
}

In the above code, we are using the Amazon Redshift JDBC Driver to connect to an Amazon Redshift database named company

A SELECT query will then be executed on the Employees table to retrieve the id and the name columns. 

Limitations of Setting Up Amazon Redshift JDBC Driver Connection

Limitations
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The following are the challenges that you might experience while setting up the Amazon Redshift JDBC Driver connection:

  1. Setting up the Amazon Redshift JDBC Driver connection may seem lengthy and complicated. One has to go through a sequence of steps to have it working. 
  2. Amazon Redshift JDBC Driver connection doesn’t allow you to stream real-life data from Amazon Redshift to your third-party application. 

Conclusion

In this article, you learned how to set up the Amazon Redshift JDBC Driver connection. You also learned about the key benefits of setting up this connection. You may now set up your own Amazon Redshift JDBC Driver connection with ease.

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