f?p=app:page:session::YES/LEVELx:::
-- x is between 1 (least detailed) and 9 (most detailed)
f?p=100:1:&APP_SESSION.::YES
f?p=100:1:&APP_SESSION.::LEVEL5
-- OR
APEX_DEBUG.enable(p_level)
-- OR
APEX_SESSION.set_debug(p_session_id,p_level) -- p_level: NULL to disable
SELECT adb.APEX_USER,
adb.APPLICATION_ID, wal.APPLICATION_NAME, adb.PAGE_ID,
adb.MESSAGE, adb.MESSAGE_TIMESTAMP,
adb.PAGE_VIEW_ID, adb.SESSION_ID
FROM APEX_WORKSPACE_ACTIVITY_LOG wal
INNER JOIN APEX_DEBUG_MESSAGES adb
ON wal.DEBUG_PAGE_VIEW_ID = adb.PAGE_VIEW_ID;