@kucerm2 It would be good if you could share your project or at least project.clj and the core namespace.

Sorry, problem solved, it's my fault 😕

Bad order of java parameters => application didn't know database connect string.

java -jar target/uberjar/tapka.jar -Ddatabase-url="jdbc:oracle:thin:..." instead of java -Ddatabase-url="jdbc:oracle:thin:..." -jar target/uberjar/tapka.jar

Has anyone implemented websockets using aleph with Luminus?