The following lines contain the word 'select', 'insert', 'update' or 'delete':
select
document_id
,transaction_category_id
,type_code
,object_version_number
from pqh_txn_category_documents
where document_id = p_document_id
and transaction_category_id = p_transaction_category_id;
select
document_id
,transaction_category_id
,type_code
,object_version_number
from pqh_txn_category_documents
where document_id = p_document_id
and transaction_category_id = p_transaction_category_id
for update nowait;