Load DB2 Data to a Database Using Embulk

Embulk is an open source bulk data loader. When paired with the CData JDBC Driver for IBM DB2, Embulk easily loads data from DB2 to any supported destination. In this article, we explain how to use the CData JDBC Driver for IBM DB2 in Embulk to load DB2 data to a MySQL dtabase.

With built-in optimized data processing, the CData JDBC Driver offers unmatched performance for interacting with live DB2 data. When you issue complex SQL queries to DB2, the driver pushes supported SQL operations, like filters and aggregations, directly to DB2 and utilizes the embedded SQL engine to process unsupported operations client-side (often SQL functions and JOIN operations).

Configure a JDBC Connection to DB2 Data

Before creating a bulk load job in Embulk, note the installation location for the JAR file for the JDBC Driver (typically C:\Program Files\CData\CData JDBC Driver for IBM DB2\lib).

Embulk supports JDBC connectivity, so you can easily connect to DB2 and execute SQL queries. Before creating a bulk load job, create a JDBC URL for authenticating with DB2.

Set the following properties to connect to DB2:

• Server: Set this to the name of the server running DB2.
• Port: Set this to the port the DB2 server is listening on.
• Database: Set this to the name of the DB2 database.
• User: Set this to the username of a user allowed to access the database.
• Password: Set this to the password of a user allowed to access the database.

You will also need to install the corresponding DB2 driver:

• Windows: Install the IBM Data Server Provider for .NET.

  On Windows, installing the IBM Data Server Provider is sufficient, as the installation registers it in the machine.config.

• Java: Install the IBM Data Server Driver for JDBC.

  In the Java version, place the IBM Data Server Driver JAR in the www\WEB-INF\lib\ folder for this application.

Built-in Connection String Designer

For assistance in constructing the JDBC URL, use the connection string designer built into the DB2 JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

java -jar cdata.jdbc.db2.jar

Fill in the connection properties and copy the connection string to the clipboard.

Below is a typical JDBC connection string for DB2:

jdbc:db2:Server=10.0.1.2;Port=50000;User=admin;Password=admin;Database=test;

Load DB2 Data in Embulk

After installing the CData JDBC Driver and creating a JDBC connection string, install the required Embulk plugins.

Install Embulk Input & Output Plugins

1. Install the JDBC Input Plugin in Embulk.
   https://github.com/embulk/embulk-input-jdbc/tree/master/embulk-input-jdbc

embulk gem install embulk-input-jdbc

2. In this article, we use MySQL as the destination database. You can also choose SQL Server, PostgreSQL, or Google BigQuery as the destination using the output Plugins.
   https://github.com/embulk/embulk-output-jdbc/tree/master/embulk-output-mysql

   embulk gem install embulk-output-mysql
   

With the input and output plugins installed, we are ready to load DB2 data into MySQL using Embulk.

Create a Job to Load DB2 Data

Start by creating a config file in Embulk, using a name like db2-mysql.yml.

1. For the input plugin options, use the CData JDBC Driver for IBM DB2, including the path to the driver JAR file, the driver class (e.g. cdata.jdbc.db2.DB2Driver), and the JDBC URL from above
2. For the output plugin options, use the values and credentials for the MySQL database

Sample Config File (db2-mysql.yml)

in:
	type: jdbc
	driver_path: C:\Program Files\CData[product_name] 20xx\lib\cdata.jdbc.db2.jar
	driver_class: cdata.jdbc.db2.DB2Driver
	url: jdbc:db2:Server=10.0.1.2;Port=50000;User=admin;Password=admin;Database=test;
	table: "Orders"
out: 
	type: mysql
	host: localhost
	database: DatabaseName
	user: UserId
	password: UserPassword
	table: "Orders"
	mode: insert

After creating the file, run the Embulk job.

embulk run db2-mysql.yml

After running the the Embulk job, find the Salesforce data in the MySQL table.

Load Filtered DB2 Data

In addition to loading data directly from a table, you can use a custom SQL query to have more granular control of the data loaded. You can also perform increment loads by setting a last updated column in a SQL WHERE clause in the query field.

in:
	type: jdbc
	driver_path: C:\Program Files\CData[product_name] 20xx\lib\cdata.jdbc.db2.jar
	driver_class: cdata.jdbc.db2.DB2Driver
	url: jdbc:db2:Server=10.0.1.2;Port=50000;User=admin;Password=admin;Database=test;
	query: "SELECT OrderName, Freight FROM Orders WHERE [RecordId] = 1"
out: 
	type: mysql
	host: localhost
	database: DatabaseName
	user: UserId
	password: UserPassword
	table: "Orders"
	mode: insert

More Information & Free Trial

By using CData JDBC Driver for IBM DB2 as a connector, Embulk can integrate DB2 data into your data load jobs. And with drivers for more than 200+ other enterprise sources, you can integrate any enterprise SaaS, big data, or NoSQL source as well. Download a 30-day free trial and get started today.