column|subscriber#|not_nullable|number
column|name|not_nullable|varchar2(30)
column|queue#|not_nullable|number
column|msg_enq_time|not_nullable|date
column|msg_step_no|not_nullable|number
column|msg_chain_no|not_nullable|number
column|msg_local_order_no|not_nullable|number
column|msgid|not_nullable|raw(16)
column|hint|nullable|rowid
column|spare|nullable|raw(16)