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