PowerExchange CDC has the following prerequisites:
Archive logging must be active for the database that contains the source tables from which change data is to be captured.
Db2 source tables must be defined with the DATA CAPTURE CHANGES clause for capture processing to occur.
A valid Db2 environment must exist for the PowerExchange user. On Linux and UNIX, the path to the Db2 client must be specified in the PATH and library path environment variables.