About Transactional

51-60 of 200Refresh
Forum
20

One transaction or two?

is it more efficient to do everything in one transaction or two? Currently my code looks like ... and adds into separate transactions? I think I remember reading in another forum post that you recommended this, I just wanted to clarify. Actually one transaction eliminates some overhead
Forum
20

Transaction isolation support?

have been unable to find any documentation about how transaction isolation is handled. For example: What happens If I am reading data in transaction A, and then transaction B commits while A is reading ... their own transaction, and the answer would thus depend on the the selected isolation level for the transaction in
Issue
20

ODB-FileWriter holds unecessary entity reference after transaction and entity manager are closed

a transaction (including the entity manager) the ODB file writer still holds a reference to entities ... are enhanced. The entity DBVectorStepBlockCollectionImpl was modified and then the transaction ... , if we execute several transactions on the identical entity manager. Also triggering the Garbage
Issue
19

Persist & remove in same transaction

I have a test case (attached) which performs the following actions: Open a new transaction Create & persist a simple entity object, EntityManager is flushed, Transaction is not committed Count ... Remove the entity object, EntityManager is flushed & cleared, Transaction is not committed Count
Forum
19

Populating entity id before transaction commit

Hi, I have a question about populating auto generated id before transaction commit. We are using OBD with Spring and transactions are managed by Spring. The problem is, that we have custom annotation ... transaction is committed so all returned entities are not populated with ID in this context. How can I
Issue
19

Unexpected exception (Error 990) - Merge with no Transaction

I am frequently having an error when merging a detached object outside of a transaction ... transaction when NontransactionalWrite is disabled: com.fastmodel.fastplan.db.experiments.ErrorTest ... with no active transaction when NontransactionalWrite is disabled: com.fastmodel.fastplan.db.experiments
Forum
19

Update entity without first opening a transaction

Hi everyone, I want to update an entity in my program without having to open a transaction, do the modifications and commit the transaction. I want to have a managed entity that is in sync ... should be updated immediately. How can I get this done? JPA requires using transactions for updating
Manual
19

CRUD Database Operations with JPA [2011-02-11]

) require an active transaction. In the example above, every Point object is first constructed as an ordinary Java object. It then becomes associated with an EntityManager and with its transaction (as ... only when the transaction is committed. The Storing Entities section in chapter 3 discusses
Manual
19

CRUD Database Operations with JPA

) require an active transaction. In the example above, every Point object is first constructed as an ordinary Java object. It then becomes associated with an EntityManager and with its transaction (as ... only when the transaction is committed. The Storing Entities section in chapter 3 discusses
Forum
19

Is it possible to using JDO and distributed transaction?

I'am new to study JDO. Can and How I use JDO an distributed transaction?(multiple database ... Documentation      JCA, JTA, and JDO Transactions - Using and Understanding Java Data Objects     JDO : Usage of DataNucleus within a JEE environment     ObjectDB supports distributed transactions and JTA