Free Oracle 1Z0-898 Exam Dumps Questions & Answers

A developer wants to ensure that an entity's data is up-to-date with regard to the database. Which of the following statements is guaranteed to accomplish this?

• A.Call EntityManager.find on the entity.
• B.Call EntityManager.refresh on the entity.
• C.Add acacheable (false) annotation on the entity class.
• D.Use a named query to retrieve the entity.

A stateless session bean's business method invokes EJBContext.setRollBackOnly and receives an IllegalStateException.
Under which of these conditions could this be possible?

• A.The bean has no metadata (in annotations 01 deployment descriptor) which specifies the transaction attribute for the method.
• B.The business method is marked with the MANDATORY transaction attribute.
• C.The business method is marked with the NONSUPPORTED transaction attribute.
• D.This Is NOT possible; a stateless session bean cannot invoke EJBContext.SetRollBackOnly.

Consider a persistence application with following entity:
@Entity
Public class MyEntity {
@Column (name = "FIELDA_COLUMN")
int fieldA;
int fieldB;
int fieldC;
int fieldD;
An orm.xml is packaged in the application with the following contents:

Which two of following statement are true. (Choose two)

• A.fieldB is mapped to column NEW_COLB
• B.fieldA is mapped to column FIELDA
• C.fieldD is not a persistence attribute of MyEntity
• D.fieldD is a persistent attribute of MyEntity

Which EntityManager API will lock entity x with a pessimistic lock?

• A.em.lock(x, LockModeType.PESSIMISTIC)
• B.em.lock(x, LockModeType.OPTIMISTIC_FORCE_INCREMENT)
• C.em.lock(x, LockModeType.WRITE)
• D.em.lock(x, LockModeType.PESSIMISTIC_READ)

Given two entities with one to-one association:

Which code fragment correctly defines the detail field that PersonDetail instance in removed if the person instance that references it is removed?

• A.@OneToOne (optional = false)
  personDetail detail;
• B.@ OneToOne (cascade = ORPHAN _ DELETE)
  @mapsId
  PersonDetail detail;
• C.@OneToOne (optional = false)
  @mapsId
  PersonDetail Detail;
• D.@ OneToOne (orphanremoval = true)
  PersonDetail Detail;