SYMPTOM
When trying to list all tables and columns accessed in a certain project the report has no data. Also the Enterprise Manager warehouse table IS_REP_COL_FACT is empty.
CAUSE
The option "Report job tables/columns accessed" in Project configuration / Statistics needs to be selected so that the table STG_IS_REP_COL_STATS is populated.

Once STG_IS_REP_COL_STATS gets populated, running a new Data load will render data in IS_REP_COL_FACT and the report will show the list of tables and columns accessed in a certain project.
Note: The data collected once the option above is activated will be from when it was activated, so no historical data will be loaded.
ACTION
KB442412