# PostgreSQL requirements

* A VM or physical machine with 2 cores or more, 4GB RAM ore more, an OS >Windows 2008R2 (not necessarily the server type), and 32 or 64 bits.

* The installation must be performed with an administrator profile on this machine.

* The connection port to PostgreSQL database must be open between Talend Change Data Capture source machine and PostgreSQL database.

* The ODBC 32-bit PostgreSQL driver (PostgreSQL30 and/or PostgreSQL35W) must be installed on Talend Change Data Capture source machine. Download the driver x86 last version from this [link](https://www.postgresql.org/ftp/odbc/versions/msi/).

  The driver path must be defined in the environment variables:

  1. Go to Control Panel > System > Advanced > Environment Variables > System.
  2. Under System Variables, edit Path and click New to add the PostgreSQL driver path (bin folder located under PostgreSQL ODBC installation directory).

* To test the ODBC 32-bit PostgreSQL driver, you may create a system data source.

  ![](https://help.qlik.com/talend/en-US/change-data-capture-installation-guide/Resources/images/tcdc-postgre-odbc-test-driver.png)

* To capture a PostgreSQL source, you must have a user profile with specific permissions on the source database:

  * Right of connection on Talend Change Data Capture remote server.
  * Read permission and right of trigger creation on the database you want to capture.