The following lines contain the word 'select', 'insert', 'update' or 'delete':
select
hierarchy_id
,hierarchy_key
,parent_hierarchy_id
,object_version_number
from hr_ki_hierarchies
where hierarchy_id = p_hierarchy_id;
select
hierarchy_id
,hierarchy_key
,parent_hierarchy_id
,object_version_number
from hr_ki_hierarchies
where hierarchy_id = p_hierarchy_id
for update nowait;