The following lines contain the word 'select', 'insert', 'update' or 'delete':
select
forum_thread_id
,forum_id
,business_group_id
,author_person_id
,author_contact_id
,person_id
,contact_id
,object_version_number
from ota_pvt_frm_thread_users
where forum_thread_id = p_forum_thread_id
and forum_id = p_forum_id
and person_id = p_person_id
and contact_id = p_contact_id;
select
forum_thread_id
,forum_id
,business_group_id
,author_person_id
,author_contact_id
,person_id
,contact_id
,object_version_number
from ota_pvt_frm_thread_users
where forum_thread_id = p_forum_thread_id
and forum_id = p_forum_id
and (person_id is null or person_id = p_person_id)
and (contact_id is null or contact_id = p_contact_id)
for update nowait;