In 18.104.22.168, I’m running the query from http://blog.tanelpoder.com/files/scripts/ash/ash_wait_chains.sql (***WARNING: RUNNING THAT QUERY ASSUMES YOU’VE LICENSED THE CORRECT ORACLE PACK!***) in the Editor. But the parser complains about the uber-complex format of the subqueries in the WITH clause.
I’ve tried replacing the variables with hard-coded values, but the parser still complains at the end of the WITH clause. The SQL executes fine, however.