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JPA Doc
2

detach(entity)

Method javax.persistence.EntityManager void detach(   Object entity ) Remove the given entity from the persistence context, causing a managed entity to become detached. Unflushed changes made to the entity if any (including removal of the entity), will not be synchronized to the database. Entities
Forum
2

evictAll() behavior

, I want to pick up all the changes from the database.  So, I call evictAll() in the following ways ... (L1) cache. But evictAll does not affect objects that have been changed by the current PersistenceManager - it is useful only to see changes that have been committed by other persistence managers
JDO Doc
2

getObjectId(pc)

Method javax.jdo.spi.StateManager Object getObjectId(   PersistenceCapable pc ) Return the object representing the JDO identity of the calling instance. If the JDO identity is being changed in the current transaction, this method returns the identity as of the beginning of the transaction
Issue
2

Internal Exception and Index Problems

". Try to change the userName attribute of this entry then the following error occurs: Unexpected ... it to another super/sub class), and due to any inheritance change (such as adding, removing or changing the super class). You can avoid this issue by restarting the ObjectDB server after every such schema change
Result
2

java.lang.Exception

with this Throwable. The specified array is copied by this call; changes in the specified array
Result
2

java.lang.RuntimeException

to be associated with this Throwable. The specified array is copied by this call; changes in
JPA Doc
2

javax.persistence.criteria.CompoundSelection

. Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned
JPA Doc
2

javax.persistence.criteria.Selection

, an alias cannot be changed or reassigned. Returns the same selection item. Parameters: name - alias
JPA Doc
2

javax.persistence.LockTimeoutException

array is copied by this call; changes in the specified array after the method invocation returns
JPA Doc
2

javax.persistence.QueryTimeoutException

is copied by this call; changes in the specified array after the method invocation returns