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The Throwable class is the superclass of all errors and exceptions in the Java language.(Class of java.langClass Throwable)


Join performance in Objectdb

select count(e) from Meta e, ImageNet i, Page p where e.idImage=i.id and e.idPage=p.id; So simple a command cause me half an hour and is running now! Each table has about 160K records. What formula can predict the time for such counting? TIA ... of idxxxx; 3, The Meta is parsed from a xml file like: ... <PIC> <PIC_URL></PIC_URL> ...


Enhanced classes problem

Hell, we have problem with the OEM enhancement licencing. When we used runtime licencing using machine activation code, everything works fine. But when we enhanced our classes with OEM licence, following errors occurs: ... 15:26 I would like to avoid misunderstanding. The problem maybe occurs also when ...


PersistenceManager.getObjectsById(Collection,boolean) throwing JDOException

I have a call to getObjectsById(Collection,boolean) that is throwing a JDOException the first time I'm attempting to retrieve an object. If I try again, then the second request succeeds. Any idea why this might occur? We're using ObjectDB 2.2.4_02. The collection being passed in is a HashSet<Object> containing a single oid object (the method is written to support multiple objects, but it seems to only be failing irregularly when only a single oid is present). I'm passing false in as the verification argument.... 23:35 OK looks like there are two different versions of the NPE that are happening, does this ...


Unable to execute update query

Hello! I'm trying to do an update query via the explorer to set a new field value for around 400k objects. UPDATE Position p SET p.originalData = null This exception raises when I try to do it: ... Xmx is 4GB. This is how the tmp directory looks like after the error occoured: 0 lock.lck 4,0K pages0.dat 3,8G ...


Failed to commit transaction: Attempt to commit a rollback only transaction

Anyone know what this means?? Suddenly cropped up.   Failed to commit transaction: Attempt to commit a rollback only transaction (error 613) at com.objectdb.jpa.EMImpl.commit(EMImpl.java:271) at javax.jdo.Transaction$commit.call(Unknown Source) ... objects being queried by the other client. Seems like some sort of locking problem, but for some reason it persists across ...


Removing an entity throws exception

Hi all, I'm testing ObjectDB for my project, but I have troubles with it. At this time I'm not able to remove customer entity, when it's read by a query (it's attached), it throws this exception: Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: com.objectdb.o._RollbackException: Failed to commit transaction: 51 ... ... The fix changed the number 51 to 34. But it looks like my db was corrupted, because when I tried to create new project as a test ...


DB Explorer and Doctor unable to open DB file

Hi, one of my DB files can not be open by neither DB explorer, nor the DB Doctor. Both are writing same mistake : ... a starting script for them, so I am willing to use them like this. The mentioned classes I can not share because of keeping the company ...


Eclipse Public License - v 1.0

... with respect to end users, business partners and the like. While this license is intended to facilitate the commercial use of the ...


Queries are slow on a large database

Hi, I have a 12GB database with 787603 entries. It is much larger than usual and there are performances issues. I am doing small queries and they take much longer than I expect, i.e.: Get the total number of entries Get 25 consecutive entries (i.e. 0-25) Get one specific entry On average each query needs 4 to 5 minutes to return a result. I have been adviced to use indexes but they are already used through the JDO Metadata file. For instance I use this class: ... to get the object with the highest Id. I tried a query like "count(this.Id)" or "max(this.Id)" but I get an exception: [ObjectDB ...