Link to an Oracle Database

Name

Link name, which should be defined based on the data source type, so it is easier to remember what the link is for

oracle_link

Database Server

IP address or domain name of the database to connect

192.168.0.1

Port

Port of the database to connect

Default port: 1521

Connection Type

SID

Instance Name

Oracle instance ID, which is used to differentiate databases by instances. This parameter is available only when Connection Type is set to SID.

dbname

Database Name

Name of the database to connect This parameter is available only when Connection Type is set to Service Name.

dbname

Username

Username used for accessing the database This account must have the permissions required to read and write data tables and metadata.

cdm

Password

Password of the username

-

Use Agent

Whether to extract data from the data source through an agent

Yes

Agent

Click Select and select the agent created in Managing Agents.

-

Oracle Version

Oracle database version. This parameter is available only for Oracle links. If java.sql.SQLException: Protocol violation is displayed, select another version.

Later than 12.1

Fetch Size

(Optional) Displayed when you click Show Advanced Attributes.

Number of rows obtained by each request. Set this parameter based on the data source and the job's data size. If the value is either too large or too small, the job may run for a long time.

A migration from the Oracle to DWS database may time out due to a long data write duration in the DWS database. In this case, reduce the value of Fetch Size for the Oracle database.

1000

Link Attributes

(Optional) Click Add to add the JDBC connector attributes of multiple specified data sources. For details, see the JDBC connector document of the corresponding database.

sslmode=require

Reference Sign

(Optional) Delimiter between the names of the referenced tables or columns. For details, see the product documentation of the corresponding database.

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