The Java Database Connectivity (JDBC) provides programmatic access to relational databases. Applications can execute SQL statements and retrieve data using the JDBC API.

Before connecting CDM to a relational database, you need to upload the JDK 8 .jar driver of the relational database.

Prerequisites

A cluster has been created.
You have downloaded one of the drivers listed in Table 1.
(Optional) An SFTP link has been created by referring to Link to an FTP or SFTP Server and the corresponding driver has been uploaded to the offline file server.

How Do I Obtain a Driver?

Different types of relational databases need to adapt to different drivers. You can obtain the JDK 8 .jar driver from the links provided in Table 1.

**Table 1** Drivers
Relational Database Type	Driver Name	How to Obtain	Recommended Version
RDS for MySQL MySQL	MySQL	https://downloads.mysql.com/archives/c-j/	mysql-connector-java-5.1.48.jar
Oracle	ORACLE_6 ORACLE_7 ORACLE_8	Driver packages: https://www.oracle.com/database/technologies/appdev/jdbc-downloads.html Driver packages of historical versions: https://repo1.maven.org/maven2/com/oracle/database/jdbc/ojdbc8/12.2.0.1/	ojdbc8.jar for version 12.2.0.1 NOTE: New versions (for example, Oracle Database 21c (21.3) drivers) are not supported. If they are used, the schema name cannot be obtained during job creation.
RDS for PostgreSQL PostgreSQL	POSTGRESQL	https://jdbc.postgresql.org/download	postgresql-42.1.4.jar for JDBC 4.2
IBM Db2	DB2	https://www.ibm.com/support/pages/db2-jdbc-driver-versions-and-downloads	4.21.29
RDS for SQL Server Microsoft SQL Server	SQLServer	Driver packages: https://docs.microsoft.com/en-us/sql/connect/jdbc/download-microsoft-jdbc-driver-for-sql-server?view=sql-server-ver15 Driver packages of historical versions: https://docs.microsoft.com/en-us/sql/connect/jdbc/release-notes-for-the-jdbc-driver?view=sql-server-ver15#previous-releases	sqljdbc42.jar

Procedure

Access the CDM console, choose Cluster Management in the navigation pane, locate the target cluster, and choose Job Management > Link Management > Driver Management. The Driver Management page is displayed.
Figure 1 Uploading a driver
Click Upload in the Operation column and select a local driver.
Alternatively, click Copy from SFTP in the Operation column and configure the SFTP Link name and Driver File Path.
(Optional) If you have uploaded an updated version of a driver, you must restart the CDM cluster for the new driver to take effect.

Managing Drivers

Prerequisites

How Do I Obtain a Driver?

Procedure