Just heard someone at IDUG EMEA 2016 asking about how to setup DB2 LUW shadow tables.
This will depend upon DB2 Version,you also need a compatible CDC (Infosphere Replication) version,check via Finding System Requirements for IBM Software Products.
The steps are at http://www.smooth1.co.uk/db2/cancun.html#1.1
NOTE: This was written when the feature first came out DB2 LUW 10.5 FP4.
CDC Components to download were:
- InfoSphere CDC for DB2 for LUW
- InfoSphere CDC Access Server
- InfoSphere CDC Management Console