JPAペシミスティックロックが機能しない

この観察を確認することができます。 H2データベースでいくつかのロックモードをテストしましたが、すべて期待どおりに機能しました。悲観的なロックモードはどちらも、Oracleデータベースと組み合わせて正しく機能しませんでした。したがって、質問：このコードの何が問題になっていますか？

Oracleでは、これらの同時コード実行のうち2つで同じデータが生成されますが、最初の実行では2番目のコードがブロックされます。

// Every Thread gets its own Hibernate session:
final Session session = HibernateSessionHolder.get();

session.getTransaction().begin();
final List<EventDeliveryDataDB> eddList = 
        session.createCriteria(EventDeliveryDataDB.class)
            .setLockMode(LockMode.PESSIMISTIC_WRITE) // with READ the same
            .add(eq("progress", NEW))
            .list();
eddList.stream().forEach(eddElem -> eddElem.setProgress(IN_PROGRESS));
session.getTransaction().commit();

Hibernateログ：

Hibernate: select this_.DD_ID as DD_ID1_2_0_, this_.CHANNEL_NAME as CHANNEL_NAME2_2_0_, this_.created as created3_2_0_, this_.DELIVERY_TIME as DELIVERY_TIME4_2_0_, this_.ERROR_CODE as ERROR_CODE5_2_0_, this_.ERROR_MESSAGE as ERROR_MESSAGE6_2_0_, this_.EVENT_ID as EVENT_ID7_2_0_, this_.MAX_RETRIES as MAX_RETRIES8_2_0_, this_.PROGRESS as PROGRESS9_2_0_, this_.PROGRESS_ID as PROGRESS_ID10_2_0_, this_.RECIPIENT_CRID as RECIPIENT_CRID11_2_0_, this_.RETRY_COUNTER as RETRY_COUNTER12_2_0_, this_.RETRY_TIME as RETRY_TIME13_2_0_, this_.updated as updated14_2_0_ from HR.NOS_DELIVERY_DATA this_ where this_.PROGRESS=?
Hibernate: select this_.DD_ID as DD_ID1_2_0_, this_.CHANNEL_NAME as CHANNEL_NAME2_2_0_, this_.created as created3_2_0_, this_.DELIVERY_TIME as DELIVERY_TIME4_2_0_, this_.ERROR_CODE as ERROR_CODE5_2_0_, this_.ERROR_MESSAGE as ERROR_MESSAGE6_2_0_, this_.EVENT_ID as EVENT_ID7_2_0_, this_.MAX_RETRIES as MAX_RETRIES8_2_0_, this_.PROGRESS as PROGRESS9_2_0_, this_.PROGRESS_ID as PROGRESS_ID10_2_0_, this_.RECIPIENT_CRID as RECIPIENT_CRID11_2_0_, this_.RETRY_COUNTER as RETRY_COUNTER12_2_0_, this_.RETRY_TIME as RETRY_TIME13_2_0_, this_.updated as updated14_2_0_ from HR.NOS_DELIVERY_DATA this_ where this_.PROGRESS=?
Hibernate: select DD_ID from HR.NOS_DELIVERY_DATA where DD_ID =? for update
Hibernate: select DD_ID from HR.NOS_DELIVERY_DATA where DD_ID =? for update
Hibernate: update HR.NOS_DELIVERY_DATA set CHANNEL_NAME=?, created=?, DELIVERY_TIME=?, ERROR_CODE=?, ERROR_MESSAGE=?, EVENT_ID=?, MAX_RETRIES=?, PROGRESS=?, PROGRESS_ID=?, RECIPIENT_CRID=?, RETRY_COUNTER=?, RETRY_TIME=?, updated=? where DD_ID=?
Hibernate: update HR.NOS_DELIVERY_DATA set CHANNEL_NAME=?, created=?, DELIVERY_TIME=?, ERROR_CODE=?, ERROR_MESSAGE=?, EVENT_ID=?, MAX_RETRIES=?, PROGRESS=?, PROGRESS_ID=?, RECIPIENT_CRID=?, RETRY_COUNTER=?, RETRY_TIME=?, updated=? where DD_ID=?