52 | Multi-Threading/Distributed-Database Questions...Greetings ObjectDB team, All below questions assume a very large database (~1,000,000,000 objects ... objects on both, i.e. distributed database/graph of objects ? Kind Regards and Thanks ! geekox86 ... and multithreading in this previous thread. References from objects in one database to objects in |
52 | Removing objects where ManyToMany relationships exist well enough, even if there's millions of Entity and OtherEntity objects in the database ... ; } Now consider a number of OtherEntities are removed from the database. What happens with the numerous TreeSets for all the existing Entities in the database? Are OtherEntities that are referenced in |
52 | Using multiple databases at a time? Also, can objects in one database reference objects in another database (e.g ... to objects in another database are not supported. Of course, you can keep IDs of the other database objects and manage the references yourself. You will not be able, however, to run one query on both databases. support Support |
52 | Open several objectdb databases the same timeWe tried to open objectdb databases from application and got following error: Attempt to open a database file 'D:\tmp\PAT-707\TC_9_2_3_1_8b@2015-09-17_12.08.15\TC_9_2_3_1_8b@2015-09-17_12.08.15.pa3 ... ) Caused by: com.objectdb.o.UserException: Attempt to open a database file 'D:\tmp\PAT-707\TC_9_2_3_1_8b |
52 | Question: remove and recreate an object, do the references survive ?We want to move unused objects to a second database. We want to copy the objects and delete them in the production database. If we then recreate the objects with the same primary key as it has been before, do the references from other objects survive this (assuming that no Doctor is done in between |
52 | ObjectDB's Database Doctor Incorrect Error Report to the object and the existence of the object. CBE CBE There is indeed a problem with this database file ... Am I reading this correctly? It seems that Doctor is telling me that one of my objects is missing. Looking at the database with ObjectDB's Database Explorer though seems to show that the reference |
52 | Storing objects problemI want to save this object to database: @Entity public class Device { private String name ... for that children devices and they don't have their children devices. I'm new to this object database so I ... > children; } An object contains a list of other devices which are also type Device. My root device |
52 | object creation during pmf.getPersistenceManager()Hi We have observed that during pmf.getPersistenceManager(), objectdb is creating object instances ... that transaction we will create instances for all classes. The number of objects created during this invocation is really huge, that causes OutOfMemory during commit (memory for jvm 1,4GB). The object |
52 | How force always recreate database on redeployment.Is there some easy way to force recreation/deletion of the current database on deployment of a web ... . Currently, to avoid multiple models in the database, I have to undeploy from Glassfish, stop the server, delete the database file, re-start the objectdb server, re-run the web app, which is tedious |
10 | Cannot insert more than about 2^20 objectsHi I have a DB with 4 entities and a total of 4 index. Once I reach 1048565 total objects in the whole DB, i am unable to insert more object, although i get NO error message nor exceptions. Doctor said Db is fine (see below) I notice that 1048565 objects + 4 entities + 4 ID indexes + 4 |
