# Prerequisites

The following topic describes the prerequisites for using Snowflake as a Qlik Replicate source endpoint.

## Driver prerequisites

Qlik Replicate for Windows:

Download and install the 64-bit Snowflake ODBC driver version 3.15.0 or a later 3.x version for Windows on the Qlik Replicate Server machine. Version 4.x is not supported.

Qlik Replicate for Linux:

Download and install the 64-bit Snowflake ODBC driver version 3.15.0 or a later 3.x version for Linux on the Qlik ReplicateServer machine. Version 4.x is not supported.

Information note

The expected name for the ODBC driver is **SnowflakeDSIIDriver** (the default).

## CDC prerequisites

The following section describes the prerequisites for capturing changes from Snowflake tables.

CHANGE\_TRACKING=TRUE must be enabled for each table or view that you want to capture changes from.

For views, CHANGE\_TRACKING=TRUE must be enabled on all underlying tables as well. For information on how to set CHANGE\_TRACKING=TRUE, see [ALTER TABLE](https://docs.snowflake.com/en/sql-reference/sql/alter-table).

## Firewall prerequisites

Firewall port 443 needs to be opened for outbound communication.