The following lines contain the word 'select', 'insert', 'update' or 'delete':
select wfa.queue_name into l_out_queue_name
from wf_agents wfa,
wf_systems wfs
where wfa.name = l_out_agent_name
and wfs.name = l_out_system_name
and wfs.guid = wfa.system_guid;
select upper(queue_name),
upper(name)
into l_queue_name,
l_agent_name
from wf_agents
where guid = p_agent_guid;