ObjectDB Database Search

I'am new to study JDO. Can and How I use JDO an distributed transaction?( multiple database)。 Is ObjectDB also provided JCA util just like DataNucleus? Reference：     Spring Framework Reference Documentation       JCA, JTA, and JDO Transactions - Using

same machine.   This is happening if multiple thread(20-50) accessing db parallelly for 30-40 min

by ObjectDB, as the supported replication is based on one master and multiple slaves

creates multiple PersistenceManagerFactory instances and some of them are not closed. support Support

We've got this exception, when running DB Doctor in parallel on multiple DB files. com.objectdb.o.UserException: Attempt to open a non existing file './tmp.E3Mwf13d7o/objectdb_7666012114926572695/DoctorSection_0.fls' at com.objectdb.o.MSG.a(MSG.java:64) at com.objectdb.o.LFL.x(LFL.java:809) at com

must be composed from the parent Id and the child subkey. And I have multiple child subtypes in which child

that, because we are using multiple separate ObjectDB Servers. Any server is responsible for managing few DB files

maintaining multiple modes), changes are considered very carefully. Hopefully the following information

When I use explorer.exe to browse the database in objectdb, eclipse tells me another app occupy it, then how can objectdb support multi-thread? gzdillon Lai Yang Multithreading refers to the ability to use the same database in multiple threads of the same process (same JVM) simultaneously

I've been trying to save a class with nested foreign keys, using a db inside an EC2 with Server license I hope I activated. It successfully saves simple classes, but it's not as easy as classes with multiple foreign keys. Indeed, it returns the following error: Failed to connect to server 35.181

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 but those values are not unique, so it's possible to have a multiple instances of the same entity. To eliminate

When I use @OrderBy and supply multiple order fields I get and error when ObjectDB Explorer expands a instance of the entity. Example code: @Entity @Table(name="Defects", schema = "myDB") public class Defects implements Serializable {     ...     ...  

for multiple here.)   Erick erick.rosas Erick Thankyou so much ! It seems my search

have a survey that carries the tabla Items . Being a company that has multiple items , a user charge

wants us to build a distribuited gwt app.  so there are multiple hosts, each

? It may be the result of creating multiple PersistenceManager instances without closing them. support

. Currently, to avoid multiple models in the database, I have to undeploy from Glassfish, stop

primary keys instead of references, but in this case queries on multiple databases are not be available. support Support

Suppose we have an objectdb network server with multiple clients connecting to it. Some clients have the latest object schema, matching that of the server. But some have an older schema, not using fields that have since been added. Will this work? FastModel Ben Schreiber This is strictly forbidden. You must have the same version of classes everywhere. support Support

Hi there! I have been all day trying to solve this. I have read multiple sites and documentation, but I can go through this. I have a clase named Pedido, that have a reference ManyToOne to a clase Cliente. @Entity public class Pedido { @Id @GeneratedValue private long id; @Embedded private

multiple EntityManager / PersistenceManager instances. There are also other differences in

Hello, Can I enable and disable the auto schema update? In some cases if multiple applications are using same database and mistakenly one of application uses entity of older version build(my specified entity libs) then the whole db is being corrupted and db need to be restart.  Expected

a minimal example ( I make the assumption points can belong to multiple point collections). I removed

to handle multiple servers with a shared temp directory better. support Support

I have Product entities containing a list of Category enties. Each product can have multiple Category but they are all refering to same limited set of Category entities (via ID). There is not changes made to Category from Product. The category ID is taken from the webservice Object ID (unique

that index is NULL rather than multiple values reflecting the indexed fields. This may indicate

multiple transactions, depending on the PersistenceContextType that is specified when its entity manager

Hi, all:     This bbs is wonderful, clean, fast. But it has no REPLY button, that can add a hint to which message the author is reply.     Sometimes, multiple replies confuse us in tracking the discussing topic, if a hint like this will be good: On 5/13/2011 11:46

when there are multiple indexes? In this scenario we have a composite index on 2 fields and a single index

may have multiple entries in the index, one per term. See also the document and words sample queries in the manual. support Support

to one entity class (and additional embeddable classes) but cannot spread over multiple entity classes

the indices from single index to multiple indices. Running the database doctor will then remove

objectdb-2.6.9_02 (with "objectdb.temp.no-enhancement-crc-check" system property) The following is a detailed report on investigation of multiple issues that have been mentioned in the following forum postings and issue reports (but please do not visit them from here now, the diagnostics

one EntityManagerFactory instance, use it for creating multiple EntityManager instances, and remember to close each

Added support for a JPQL update query with multiple variables (issues #2369, #3009)

I am encountering problems (complexities) with EntityManager registration of entities across multiple modules in a multi-module Maven project. I have a  entities under many different paths in many different modules, and frequently evolving/changing. JPA2 persistence.xml does not

different parts of their projects in several enhancement runs). If multiple enhancement runs are allowed

happens again. Improving ObjectDB so it will be able to handle multiple versions of the same class

to get rid of this kind of problems as we start now with our worldwide multiplication . Please advice

that cannot fit in one database page are split by ObjectDB into multiple sections and each section is stored

multiple begin and commit transaction   IRule rule = new Rule();   ...    

, sometimes it will run for a couple of minutes - so is most likely connected to the multiple threads. I

, start Tomcat). Using this approach it will be impossible for multiple processes to access

Hello! I use Spring Data JPA. It uses the Metamodel to create repository beans. This triggers a connection to the ObjectDB server. It happens on every start of the Context. If it fails the application isn't available at all. I had the situations multiple times that my database server took longer

Fixed an  Explorer bug in handling listeners and callbacks. Fixed a bug in using user/password url arguments multiple times. Fixed several bugs in query processing and running.

a constraint. Changed to-one mapped-by (inverse) relationship with multiple matching 

Added support of disabling multiple indexes in query execution ( issue #3028 ).

a good JavaEE example with multiple entities, and at least one variation that demonstrates @Stateful

Version 2.8.4 fixes a critical bug that in rare cases may cause collision between different schema versions of entity classes, when schemas have changes many times (usually more than 20 times). This bug mainly affects queries on hierarchy of multiple entity classes (i.e. a query on a super class

drive? Is accessing the database from multiple processes possible (more than one ObjectDB application