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- Oracle.1Z0-898.v2018-04-11.q63
- Question 44
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Question 44/63
It a Persistence application locks entity x with a pessimistic lock, which statement is true?
Correct Answer: D
Explanation/Reference:
Explanation: When the lock cannot be obtained, and the database locking failure results in transaction- level rollback, the provider must throw the PessimisticLockException and ensure that the JTA transaction or EntityTransaction has been marked for rollback.
Reference: javax.persistence, Enum LockModeType
http://www.eclipse.org/eclipselink/api/2.0/javax/persistence/LockModeType.html
Explanation: When the lock cannot be obtained, and the database locking failure results in transaction- level rollback, the provider must throw the PessimisticLockException and ensure that the JTA transaction or EntityTransaction has been marked for rollback.
Reference: javax.persistence, Enum LockModeType
http://www.eclipse.org/eclipselink/api/2.0/javax/persistence/LockModeType.html
- Question List (63q)
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- 1 commentQuestion 2: Consider the following web application: (Exhibit) Here MyEnt...
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- Question 14: A developer wants to ensure that an entity's data is up-to-d...
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- Question 22: Given two entities with one to-one association: @ Entity pub...
- Question 23: Consider a persistence application with the following orm.xm...
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- Question 25: Which two of the following statements are true of embeddable...
- Question 26: An application wants to utilize side effects of cascading en...
- Question 27: A user entity is in a one-to-many relationship with a Book e...
- Question 28: A developer is creating an entity which is mapped to a table...
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- Question 32: A JavaEE application is packaged as follows. (Exhibit) Which...
- Question 33: If an application uses an extended persistence context, whic...
- 1 commentQuestion 34: Which statement is correct about the Java Persistence API su...
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- Question 36: An application has two entities, parson and Address. (Exhibi...
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- Question 41: Entity lifecycle callback methods may be defined in which th...
- Question 42: An application has three entities: the mapped superclass per...
- Question 43: Which one of the following queries selects the customer whos...
- Question 44: It a Persistence application locks entity x with a pessimist...
- Question 45: Given: @PersistenceContext EntityManager em; public boolean ...
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- Question 49: Given the following entity classes: @Entity @cacheable (true...
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