The following lines contain the word 'select', 'insert', 'update' or 'delete':
SELECT document_type,document_number,orig_document_number,document_direction,transaction_status,
action_type,entity_number,entity_type,trading_partner_id,ecx_message_id,
event_name,event_key,internal_control_number,item_type
FROM WSH_TRANSACTIONS_HISTORY
WHERE transaction_id = P_transaction_id;
IS select TRANSACTION_STATUS
FROM wsh_transactions_history
WHERE transaction_id = v_trx_id;