Which two statements are true about transactions in the Oracle Database serve?
A) An uncommitted transaction commits automatically if the user exits SQL*Plus
B) Data Manipulation Language (DML) statements always start a new transaction.
C) A user can always see uncomitted updates made by the same user in a dfferert session.
D) A Data Detiniton Language (DDL) statement does a commit automatially only for the data dictionary updates caused by the DDL
E) A session can always see uncomnitted updetes made by itselt.
F) If a session has an uncometted transaction,then a DDL statement issue a COMMIT before starting a new transaction.
Answer：AE
(解析：这道题考的是事务提交和没有提交时的状态，属于常规的理论知识。)
【2019年8月】OCP 071认证考试最新版本的考试原题-第23题
原文：https://blog.51cto.com/13854012/2448092