DB Driver Installer automatically downloads, configures, and uses CData JDBC drivers. DB Driver Installer supports a wide variety of databases and can be used to manage DB2, MySQL, Oracle, and PostgreSQL drivers.
Drivers identify database servers using URLs whose format is jdbc:vendor:host: port/database. These long strings are often hard to edit, especially for complex drivers.
Installation Process the ADB Driver Installer:
DB Driver Installer automatically installs and configures some of the more popular JDBC drivers used by Ignition. The rest of the drivers are configured by the user.
The configuration process involves specifying a JDBC DataSource, which defines the minimum connection information required for the driver to access the database.
The data source can also include optional connection properties to take advantage of additional features and improve performance.
For example, if the database uses Kerberos authentication and your JAVA_HOME environment has tdshelper installed, you can use a JDBC DataSource with a “SQL Server” type of driver to connect using a native SQL Server API instead of the standard JDBC-ODBC bridge.
Some drivers require a JAR file, which can be found on the vendor’s website. When the driver is downloaded, a window appears to let you select the location of the driver class files.
DbVisualizer can also search for JAR files on demand and on startup. This feature is enabled by the JDBC Driver Finder property in Tools->Tools Properties.
Loading of the ADB Driver Installer:
A JDBC driver consists of one or more jar files that contain program code and resources. These jars are downloaded from the database vendor’s website.
When you load a jar file, DBeaver scans it to find the class that represents the main driver class. It adds this class to the list of Driver Classes in the Driver Settings area above. If there is more than one such class, consult the driver documentation to decide which class to select.
If the jar file contains a Maven artifact, DBeaver can use it instead of downloading the jar file itself. This can improve the performance of the loading process.
The Advanced tab shows a table of options that you can configure for the connection to your DBMS. These options are passed to the DBMS by the driver as key-value pairs. Typically, you do not need to edit these options because they are DBMS-specific. You can, however, override the defaults by editing a specific value in the table.
Configuration:
Because of licensing restrictions, DbVisualizer does not bundle JDBC drivers for DB2, MySQL, and Oracle. However, you can load and configure them manually using the Driver Manager dialog.
The Driver Manager analyzes the loaded ZIP or JAR files to present any classes that match a JDBC driver or initial context class. The initial context is used to obtain a database connection and provides access to SQL statements.
Drivers that are successfully configured are tagged with a blue icon. You can also use the Driver Manager to create and load profiles on your KNIME server.
This enables you to quickly select database drivers when building a flow. For example, you can create and save a profile for a specific database driver, such as for BigQuery or Oracle.
Then when you are building your flow you can simply select the profile and get back to work. This can help you to be more productive. The profiles that you have created are shown in a list at the bottom part of the dialog.
Errors:
If the DB Driver Installer cannot configure a driver, it displays an error message. You may be able to solve this problem by changing the database connection information or by adding new parameters to the connection configuration.
JDBC URLs are strings in the form jdbc:vendor:host: port/database, for example, jdbc:postgresql:localhost:5432/Postgres.
DBeaver constructs this URL from the host, port, and database options you specify during connection setup. If you want to edit these options, a dialog box appears for each DB Connect driver.
Note: To use a DB Connect driver with Tableau, it must be compiled for the version of Java Runtime Environment that your deployment uses. Check the Drivers & Activation page for more information.
Several errors can occur during the installation and configuration of a DB Driver Installer. These include: