The following lines contain the word 'select', 'insert', 'update' or 'delete':
select
snapshot_id
,object_version_number
,document
,object_name
,object_identifier
from hr_transaction_snapshot
where snapshot_id = p_snapshot_id;
select
snapshot_id
,object_version_number
,document
,object_name
,object_identifier
from hr_transaction_snapshot
where snapshot_id = p_snapshot_id
for update nowait;