I have configured dbfw in proxy DPE mode, and do some operations in client(for example select、insert、update、delete). But have nothing in "log search results" , in addition to invalid sql statement (for example selt * from a;).
What do you actually expect to be logged?
If you want to try to find your invalid SQL look at summary_records Table.
It provides primary information collected in the traffic log, as an hourly summary of the count of occurrences of each cluster.
You can meet there such information:
( to see the table visit my blog http://1dayotn.blogspot.com/ )