Load data from Oracle
This section explains how to connect to an Oracle database with Exasol and load data.
For details about data type mappings or to migrate data, see the Oracle to Exasol migration script in our GitHub repository.
We recommend using Oracle Call Interface instead of Oracle JDBC to connect to Exasol.
Prerequisites
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The Oracle system must be reachable from the Exasol system
-
The user credentials in the connection must be valid.
Oracle Call Interface
Download and add driver
Follow the procedure described in Add Oracle Instant Client to add the thin client to your Exasol environment.
Create connection
To create a connection, run the following statement. Replace the connection string and credentials as needed.
CREATE OR REPLACE CONNECTION OCI_ORACLE
TO '192.168.99.103:1521/xe'
USER 'system'
IDENTIFIED BY 'oracle';
Alternatively, run the following statement:
CREATE CONNECTION OCI_ORACLE TO '(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.99.103)(PORT = 1521))
(CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME = orcl)))';
To test the connection, run the following statement:
Oracle JDBC
Download driver
Download the compatible driver from the Oracle JDBC Driver Download Page link.
Add JDBC driver
To add the JDBC driver, create a configuration file called settings.cfg
with the following settings:
Follow the procedure described in Add JDBC Driver to upload the settings.cfg
configuration and JDBC driver files to Exasol.
If the connection using the Oracle JDBC driver is unsuccessful, try disabling the security manager by adding the line NOSECURITY=YES
to the settings.cfg file.
Create connection
To create a connection, run the following statement. Replace the connection string and credentials as needed.
CREATE CONNECTION JDBC_ORACLE
TO 'jdbc:oracle:thin:@//10.78.0.178:1521/orcl'
USER 'exatest'
IDENTIFIED BY 'test';
To test the connection, run the following statement:
Load data
You can use the IMPORT statement to load data using the connection you created above. IMPORT supports loading data from a table or a SQL statement.