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17

Cannot catch a PersistenceException and continue the transaction

the transaction as one that need to be rolled back. I understood that I can overcome it in several ways but those don't work for me. Begin a new (nested) transaction in another method that will be rolled back instead of the first one- doesn't work. I got a message that it couldn't begin a new transaction
Forum
17

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
17

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
16

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
16

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
Forum
16

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
Issue
16

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
16

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
Forum
16

Query for objects persisted within the same transaction

I have a question concerning reading uncommited entities with query, within active transaction. For example, I read data from file. Each line contains value of one of entity's attributes ... and persisted withing current transaction is invisible to future queries in this transaction, unless
Issue
16

Error in production. Failed to commit transaction: Unexpected database state: BTree -152 is not found

.Read .doGet (115 ): Failed to commit transaction: Unexpected database state: BTree -152 is not found [ObjectDB 2.5.5] javax.persistence.RollbackException Failed to commit transaction: Unexpected