The following lines contain the word 'select', 'insert', 'update' or 'delete':
select
activity_version_id
,prerequisite_course_id
,business_group_id
,prerequisite_type
,enforcement_mode
,object_version_number
from ota_course_prerequisites
where activity_version_id = p_activity_version_id
and prerequisite_course_id = p_prerequisite_course_id;
select
activity_version_id
,prerequisite_course_id
,business_group_id
,prerequisite_type
,enforcement_mode
,object_version_number
from ota_course_prerequisites
where activity_version_id = p_activity_version_id
and prerequisite_course_id = p_prerequisite_course_id
for update nowait;