About transaction

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Forum
19

Rollback of several closed transactions

to split a transaction into several transactions. But then we need actually a rollback for several transactions. Is there any possibility in the ObjectDB to rollback several closed transactions? You cannot roll back a committed transaction. In that case, you may want to consider implementing
Issue
18

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
18

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
18

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
18

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
Forum
18

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
18

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
18

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
Issue
18

Inefficient memory usage with very large transactions

When a large transaction is committed, ObjectDB increases some internal structures, i.e. allocates more memory, but from that point the structures remain big and the memory is not released even if all the next transactions are small. This problem was found during a heap analysis (see #9 in
Forum
18

NegativeArraySizeException on commiting a transaction

Hi, we started to get a java.lang.NegativeArraySizeException from ObjectDB upon changing an object in the DB and committing the transaction. I tried to repair the DB file with Database Doctor ... from the ProjectVersionHistory, so only 20 remained and since then my changing transactions