Connecting to DB2

Connection Steps

Please follow the steps below to connect to the DB2 data source.

1. Click "New Data Connection" in the upper right corner of the data connection page.

2. Select the DB2 data source from the data source types.

3. Fill in the required parameters for the data source connection as prompted.

   Connection Configuration Information Description

   Field	Description
   Name	The name of the connection. Required and unique within the user
   Host Address	The address of the database. If the url field is filled, the url will take precedence
   Port	The port of the database. If the url field is filled, the url will take precedence
   Username	The username for the database
   Password	The password for the database
   Database	The name of the database
   Schema	The schema of the database
   Max Connections	Maximum number of connections in the connection pool
   Prefer to use database comment as dataset title	Choose to display the table name or the table comment. When enabled, shows the title; when disabled, shows the table comment
   URL	The JDBC url of the database
   Transaction isolation level for read behavior	This setting only affects reading data; writing data still uses the default isolation level
   Hierarchical loading of schema and tables	Default is off. When enabled, schemas and tables are loaded hierarchically. Only schemas are loaded during connection; you need to click the schema to load the tables under it
   Query timeout (seconds)	Default is 600. When the data volume is large, you can appropriately increase the timeout
   Only show tables under the specified database/schema	When this option is selected and the database field is not empty, only tables under that db are displayed

4. After filling in the parameters, click the Validate button to get the validation result (this checks the connectivity between HENGSHI SENSE and the configured data connection; you cannot add the connection if validation fails).

5. After validation passes, click Execute Preset Code to pop up the preset code for this data source, then click the execute button.

6. Click the Add button to add the DB2 connection.

Please Note

1. Parameters marked with * are required; others are optional.
2. When connecting to a data source, you must execute the preset code. Failure to do so may result in certain functions being unavailable during data analysis. In addition, when upgrading from a version prior to 4.4 to 4.4, you need to execute the preset code for existing data connections in the system.

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Supported DB2 Versions

11.x and above

Data Connection Preview Support

Supports regular table and view objects, as well as any tables that can be listed by show tables.

SQL Dataset Support for SQL

All SELECT-related features are supported. The SELECT SQL statement must comply with the DB2 syntax specification.

Supported Authentication Methods

Username and password authentication is supported. SSL and other authentication methods are not supported.

Unsupported Field Types

The following data types in DB2 cannot be processed correctly:

• GRAPHIC
• VARGRAPHIC
• LONG VARGRAPHIC
• CURSOR
• XML
• ARRAY
• Anchored types
• User-Defined types