tDB2Connection - 6.3

Talend Open Studio for Big Data Components Reference Guide

EnrichVersion
6.3
EnrichProdName
Talend Open Studio for Big Data
task
Data Governance
Data Quality and Preparation
Design and Development
EnrichPlatform
Talend Studio

Function

tDB2Connection opens a connection to the database for a current transaction.

Purpose

This component is used to open a connection to the specified database that can then be reused in the subsequent subjob or subjobs.

tDB2Connection properties

Component family

Databases/DB2

 

Basic settings

Property type

Either Built-in or Repository.

Since version 5.6, both the Built-In mode and the Repository mode are available in any of the Talend solutions.

 

 

Built-in: No property data stored centrally.

 

 

Repository: Select the repository file in which the properties are stored. The fields that follow are completed automatically using the data retrieved.

 

Host name

Database server IP address.

 

Port

Listening port number of DB server.

 

Database

Name of the database.

 

Table Schema

Name of the schema.

 

Username and Password

DB user authentication data.

To enter the password, click the [...] button next to the password field, and then in the pop-up dialog box enter the password between double quotes and click OK to save the settings.

 

Encoding

Select the encoding from the list or select Custom and define it manually. This field is compulsory for DB data handling.

 

Use or register a shared DB Connection

Select this check box to share your connection or fetch a connection shared by a parent or child Job. This allows you to share one single DB connection among several DB connection components from different Job levels that can be either parent or child.

Warning

This option is incompatible with the Use dynamic job and Use an independent process to run subjob options of the tRunJob component. Using a shared connection together with a tRunJob component with either of these two options enabled will cause your Job to fail.

This check box is not visible when the Specify a data source alias check box is selected.

 

Shared DB Connection Name

Enter the shared connection name.

This field is available only when the Use or register a shared DB Connection check box is selected.

 

Specify a data source alias

Select this check box and specify the alias of a data source created on the Talend Runtime side to use the shared connection pool defined in the data source configuration. This option works only when you deploy and run your Job in Talend Runtime. For a related use case, see Scenario 4: Retrieving data from a MySQL database using the data source on Talend Runtime side to set up the database connection.

This check box is not visible when the Use or register a shared DB Connection check box is selected.

 

Data source alias

Enter the alias of the data source created on the Talend Runtime side.

This field is available only when the Specify a data source alias check box is selected.

Advanced settings

Additional JDBC parameters

Specify additional connection properties for the DB connection you are creating.

Note

You can set the encoding parameters through this field.

 

Auto Commit

Select this check box to commit any changes to the database automatically upon the transaction.

With this check box selected, you cannot use the corresponding commit component to commit changes to the database; likewise, when using the corresponding commit component, this check box has to be cleared. By default, the auto commit function is disabled and changes must be committed explicitly using the corresponding commit component.

Note that the auto commit function commits each SQL statement as a single transaction immediately after the statement is executed while the commit component does not commit only until all of the statements are executed. For this reason, if you need more room to manage your transactions in a Job, it is recommended to use the commit component.

 

tStatCatcher Statistics

Select this check box to gather the job processing metadata at a Job level as well as at each component level.

Usage

This component is more commonly used with other tDB2* components, especially with the tDB2Commit and tDB2Rollback components.

Log4j

If you are using a subscription-based version of the Studio, the activity of this component can be logged using the log4j feature. For more information on this feature, see Talend Studio User Guide.

For more information on the log4j logging levels, see the Apache documentation at http://logging.apache.org/log4j/1.2/apidocs/org/apache/log4j/Level.html.

Limitation

This component requires installation of its related jar files. For more information about the installation of these missing jar files, see the section describing how to configure the Studio of the Talend Installation and Upgrade Guide.

Note that the DB2 10.5 driver doesn't support JDK 8. To use this component with DB2 10.5, you need to install JDK 7 or an earlier version.

Related scenarios

For tDB2Connection related scenario, see tMysqlConnection