Oracle
1Z0-900 · Question #64
1Z0-900 Question #64: Real Exam Question with Answer & Explanation
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Manage Persistence using JPA Entities and BeanValidation
Question
A Persistence application locks entity x with a LockModeType.PESSIMISTIC_READ lock type. Which statement is true?
Options
- ALockModeType.PESSIMISTIC_READ is the synonym of LockModeType.READ
- BThis operation will force serialization among transactions attempting to read the entity data.
- CThis operation will result in a TransactionRolledbackException if the lock cannot be obtained.
- DIf the application updates the entity later, and the changes are flushed to the database, the lock
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Topics
#Pessimistic Locking#JPA Lock Modes#Transaction Serialization#Entity Management