[rt-users] How to debug RT3 better

[rt3 at acerhomes.com]

I'm really don't know about perl syntax but I'm very familiar with SQL.  I
have still some  problem with RT3 when upgraded from 3.0.5 to 3.4.5.  It's
currently working except from the approval link which doesn't show
anything even I selected  pending, approved or denied, etc. I already
posted my problem but no one seems bother to answer.  I think I have some
problem with SQL query passing to database (PSQL).  My question how I can
debug this problem?