The following lines contain the word 'select', 'insert', 'update' or 'delete':
select
function_id
,sequence_number
,context_id
,object_version_number
from ff_function_context_usages
where function_id = p_function_id
and sequence_number = p_sequence_number;
select
function_id
,sequence_number
,context_id
,object_version_number
from ff_function_context_usages
where function_id = p_function_id
and sequence_number = p_sequence_number
for update nowait;