Oracle MERGE e declaração preparada

MERGE INTO dev_corpus a
  USING (SELECT 1000156 corpusid, 'sss2' corpus_name, 'sahaaaaaar' corpusdesc, null corpusimageids, null rocf1, null rocf2, null rocf3, null rocc1, null rocc2, null rocc3, null corpusactive, null corpusrunfrequency, null corpuslastrun, null corpuslastsync, null rocsettingid, null corpusaffinity, null corpusterms, null corpusdomain FROM dual) incoming 
  ON (a.corpusid = incoming.corpusid )  
  WHEN MATCHED THEN 
  UPDATE SET corpus_name = incoming.corpus_name , corpusdesc = incoming.corpusdesc , corpusimageids = incoming.corpusimageids , rocf1 = incoming.rocf1 , rocf2 = incoming.rocf2 , rocf3 = incoming.rocf3 , rocc1 = incoming.rocc1 , rocc2 = incoming.rocc2 , rocc3 = incoming.rocc3 , corpusactive = incoming.corpusactive , corpusrunfrequency = incoming.corpusrunfrequency , corpuslastrun = incoming.corpuslastrun , corpuslastsync = incoming.corpuslastsync , rocsettingid = incoming.rocsettingid , corpusaffinity = incoming.corpusaffinity , corpusterms = incoming.corpusterms , corpusdomain = incoming.corpusdomain 
  WHEN NOT MATCHED THEN 
  INSERT (corpusid, corpus_name, corpusdesc, corpusimageids, rocf1, rocf2, rocf3, rocc1, rocc2, rocc3, corpusactive, corpusrunfrequency, corpuslastrun, corpuslastsync, rocsettingid, corpusaffinity, corpusterms, corpusdomain) 
  VALUES (incoming.corpusid, incoming.corpus_name, incoming.corpusdesc, incoming.corpusimageids, incoming.rocf1, incoming.rocf2, incoming.rocf3, incoming.rocc1, incoming.rocc2, incoming.rocc3, incoming.corpusactive, incoming.corpusrunfrequency, incoming.corpuslastrun, incoming.corpuslastsync, incoming.rocsettingid, incoming.corpusaffinity, incoming.corpusterms, incoming.corpusdomain)

preparedStatement = dbConnection.prepareStatement("MERGE INTO dev_corpus a " +
                              "USING (SELECT ? corpusid, ? corpus_name, ? corpusdesc, ? corpusimageids, ? rocf1, ? rocf2, ? rocf3, ? rocc1, ? rocc2, ? rocc3, ? corpusactive, ? corpusrunfrequency, ? corpuslastrun, ? corpuslastsync, ? rocsettingid, ? corpusaffinity, ? corpusterms, ? corpusdomain FROM dual) incoming " +
                              "ON (a.corpusid = incoming.corpusid) " +
                              "WHEN MATCHED THEN " +
                              "UPDATE SET a.corpus_name = incoming.corpus_name , a.corpusdesc = incoming.corpusdesc , a.corpusimageids = incoming.corpusimageids , a.rocf1 = incoming.rocf1 , a.rocf2 = incoming.rocf2 , a.rocf3 = incoming.rocf3 , a.rocc1 = incoming.rocc1 , a.rocc2 = incoming.rocc2 , a.rocc3 = incoming.rocc3 , a.corpusactive = incoming.corpusactive , a.corpusrunfrequency = incoming.corpusrunfrequency , a.corpuslastrun = incoming.corpuslastrun , a.corpuslastsync = incoming.corpuslastsync , a.rocsettingid = incoming.rocsettingid , a.corpusaffinity = incoming.corpusaffinity , a.corpusterms = incoming.corpusterms , a.corpusdomain = incoming.corpusdomain " +
                              "WHEN NOT MATCHED THEN " +
                              "INSERT (corpusid, corpus_name, corpusdesc, corpusimageids, rocf1, rocf2, rocf3, rocc1, rocc2, rocc3, corpusactive, corpusrunfrequency, corpuslastrun, corpuslastsync, rocsettingid, corpusaffinity, corpusterms, corpusdomain) " +
                              "VALUES (incoming.corpusid, incoming.corpus_name, incoming.corpusdesc, incoming.corpusimageids, incoming.rocf1, incoming.rocf2, incoming.rocf3, incoming.rocc1, incoming.rocc2, incoming.rocc3, incoming.corpusactive, incoming.corpusrunfrequency, incoming.corpuslastrun, incoming.corpuslastsync, incoming.rocsettingid, incoming.corpusaffinity, incoming.corpusterms, incoming.corpusdomain)");