About PESSIMISTIC_READ

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JPA Doc
4

lock(entity, lockMode)

. If a pessimistic lock mode type is specified and the entity contains a version attribute ... . If these checks fail, the OptimisticLockException will be thrown. If the lock mode type is pessimistic ... - if the entity does not exist in the database when pessimistic locking is performed
JPA Doc
4

lock(entity, lockMode, properties)

with the specified lock mode type and with specified properties. If a pessimistic lock mode type ... , the OptimisticLockException will be thrown. If the lock mode type is pessimistic and the entity instance is found ... - if the entity does not exist in the database when pessimistic locking is performed
Manual
4

Database Replication and Clustering

master-slave replication the master node manages the main (master) database, which supports Read ... , which are limited to READ operations. Any update to the master database is automatically propagated
Result
4

Privacy Policy

for websites to obtain explicit consent from users before leaving behind or reading files such as cookies ... , but will not store, save or collect personal information. You can read Google's privacy policy
Manual
4

What's next? [2016-01-30]

This chapter introduced the basic principles of using JPA with ObjectDB. You can dive into the details by reading the other chapters of this manual. If you prefer to get started using ObjectDB right ... your own ObjectDB/JPA programs simply by modifying this sample program. Reading the Next Chapters
Manual
4

What's next?

This chapter introduced the basic principles of using JPA with ObjectDB. You can dive into the details by reading the other chapters of this manual. If you prefer to get started using ObjectDB right ... your own ObjectDB/JPA programs simply by modifying this sample program. Reading the Next Chapters
JPA Doc
4

find(entityClass, primaryKey, lockMode)

context and the lock mode type is pessimistic and the entity has a version attribute, the persistence ... , the OptimisticLockException will be thrown. If the lock mode type is pessimistic and the entity ... OptimisticLockException - if the optimistic version check fails PessimisticLockException - if pessimistic locking
JPA Doc
4

find(entityClass, primaryKey, lockMode, properties)

there. If the entity is found within the persistence context and the lock mode type is pessimistic ... will be thrown. If the lock mode type is pessimistic and the entity instance is found but cannot be locked ... OptimisticLockException - if the optimistic version check fails PessimisticLockException - if pessimistic locking fails
JPA Doc
4

find(entityClass, primaryKey, lockMode, properties)

is pessimistic and the entity has a version attribute, the persistence provider must perform optimistic ... will be thrown. If the lock mode type is pessimistic and the entity instance is found ... OptimisticLockException - if the optimistic version check fails PessimisticLockException - if pessimistic
JPA Doc
4

javax.persistence.Query

- if a lock mode has been set and there is no transaction PessimisticLockException - if pessimistic locking fails and the transaction is rolled back LockTimeoutException - if pessimistic locking ... mode has been set and there is no transaction PessimisticLockException - if pessimistic locking