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Oracle 1Z0-900 Exam Dumps

Vendor: Oracle
Exam Code: 1Z0-900
Exam Name: Java EE 7 Application Developer
Certification: Oracle Database
Total Questions: 142 Q&A
Updated on: Nov 14, 2024
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1Z0-900 Online Practice Questions and Answers

Questions 1

Given the code fragments: What code should you add to the body of the updateEmployee method in order to save pending changes to the database?

A. entityManager.merge(emp);

B. Context. Ctx = new InitialContext(); UserTransaction utx = (UserTransaction)ctx.lookup("java:comp/UserTransaction"); utx.begin(); entityManager.merge(emp); utx.commit();

C. entityManager.lock(emp); EntityManager.merge(emp);

D. entityManager.getTransaction().begin(); entityManager.merge(emp); entityManager.getTransaction().commit();

Show Answer

Questions 2

A Persistence application locks entity x with a LockModeType.PESSIMISTIC_READ lock type. Which statement is true?

A. LockModeType.PESSIMISTIC_READ is the synonym of LockModeType.READ

B. This operation will force serialization among transactions attempting to read the entity data.

C. This operation will result in a TransactionRolledbackException if the lock cannot be obtained.

D. If the application updates the entity later, and the changes are flushed to the database, the lock will be converted to an exclusive look.

Show Answer

Questions 3

Your organization is planning for a periodic counting of individual items automatically throughout the course of the year. As part of this activity, the user has loaded items to the cycle count but some of the items are not being considered when count schedules and count sequences are not generated.

Identify two reasons that explain why the items are not being considered.

A. The ABC assignment group is not defined.

B. The Include in Schedule option is not selected to include the item for auto-scheduling.

C. The Cycle Count Enabled flag is not selected for the inventory organization.

D. The Cycle Count Enabled flag is not selected for the item.

E. The approval controls are not set up.

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