ObjectDB Database Search

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Issue with orphanRemoval and multiple EntityManagers

Hi, We have a problem where our database size grows over time more than expected. We've traced it down to the following issue: I have some entities that are using OneToMany relationship ... of addresses: "+res3. size ());         em.close();   

Removing objects where ManyToMany relationships exist

well, so, the TreeSet is reduced in size ? Or do I end up having a number of null pointers in the Sets? 

EntityManagerFactory objects being locked during EntityManager creation

to the server. Possible directions you may consider: Increasing the size of the connection pool to reduce

Explorer in 2.3

more information about the database health a. Show actual running values for all parameters in objectdb.conf ( size

Feedback on new site

Font size on new site is huge! This is especially a problem when browsing the api.   dmoshal David Moshal Difficult to find info on ODB1, including api javadocs. dmoshal David Moshal Thank you for your useful comments. The ObjectDB 1 manual is available here . You can use the JDO menu

suddenly a batchquery appears

usage threshold. If you have sufficient RAM try to increase the threshold. Regarding the size

persisting object with long[][] arrays of array

) to the database is expected to take much more time than persisting one large object of the same total size

version 2.8.9_06 significantly slower for queries compared to 2.8.9

to run the query from  https://www.objectdb.com/forum/2845  (database size 20GB

Does ObjectDB create one instance of each entity class on (web app) load ?

, rather than relying on one- size -fits-all EAGER. This pre-detach loader approach is even more flexible

Problem with queries on lists with reverse mapping

= query7.getResultList(); assertEquals(1, q7results. size ()); It looks like the result is not filtered

find() cost unreasonable time!

@Inheritance(strategy=InheritanceType.JOINED) // Success for Inheritance Sonsection //@Cache( size =10000

connection pooling

a connection). By default the maximum connection pool size is 50. You can change it in the persistence

Missing (null) elements in eager loaded references

we cannot explore issues in projects of this size . support Support Okay, here is a only main class project

Memory Leaks after COMMIT operation (checked on versions 2.6.5 & 2.6.6.b01)

;     Size         

Server closes if large query runs out of memory

collection. ObjectDB surely has some idea of the sizes of objects that it persists and retrieves

Query by array element

.getResultList(). size ());              

Join performance in Objectdb

but then it would work faster. The aggreiation of Objectdb seems to be based on the size of fields

New to Product & Having An Issue

: departments) em.remove(d); em.getTransaction().commit(); }while(departments. size () 0); }catch

Unable to convert 1.x odb file to 2.x

which is 3G in size and I think half of it was converted. The output is much longer (see it in attachment

OutOfMemory in Server

(Thread.java:833) I was also checking the used heap size chart in JConsole while my test case caused

Date field Index is corrupted due to time change

): We create a 1G DB file when the application starts for the fist time. The size of the DB file does not

No clue how to query with collection

INNER JOIN c.addresses ORDER BY SIZE (c.addresses) 0 ? CONCAT(c.addresses[0].street + c.addresses[1

Suspected memory leak

: The element - try reducing the number of threads and the cache size (notice that this setting

Significant I/O costs during batch update or insert data.

Our application has some complex entities. We do batch update(merge detached entity) every 2 minutes. We find the period significant IO costs these days, and disappeared when turn off the batch updating. 1.ObjectDB is in embedded mode. 2.ObjectDB version is 2.3.7 3.Database file size is nearly

ClassCastException on SELECT NEW ... after UPDATE over Java RMI

;    System.out.println(resultList. size ());        

TreeSet and compareTo() issue

.util.TreeSet.__odbBeforeAccess(Unknown Source) at objectdb.java.util.TreeSet. size (Unknown Source

Connections pool

EntityManager instances. By default the maximum connection pool size is 50. You can change it in

Persisting collection where members are subclasses

loadedFolders = entryDao.findFolderByName("B"); Assert.assertEquals(1, loadedFolders. size ()); Assert

Java methods in queries are now forbidden by default

, matches , indexOf , and substring . Collection methods: isEmpty , size , contains , containsKey

Dont want to use Proxy Class

Feature api of SubstrateVM, I could see the paramString and size of paramArrayOfByte is not empty

Getting java.lang.ArithmeticException: / by zero

Binit Bhaskar This division by zero occurs in some hash table that happens to have a 0 size (but I

Lazy Init / Eager / Join Fetch collection strategy ? What to choose ?

up the Lazy collection (by getting size () of Collection) is a very weak solution. In case

object creation during pmf.getPersistenceManager()

). The object network is small, it was read from file via deserialization, file has size 2MB. The data

Online Backup degrades responsiveness.

than when it's not during the busy time of the day. The db is working fine. But it has grown to 20gig in size with 79 million records. I don't know if it's because the size of the DB making the backup process

com.objectdb.o.InternalException

No idea what happened.  A simple getResultList() opearation. DB table affected size is ~ 26000 records, physical DB file size is ~ 8.5MB Thanks for any help ! Leon log file: ------------------------------------------------------------------------------------------------------------------------ [2016

JPQL support for mapped by (inverse) collections

As discussed and demonstrated in this forum thread , collection operators and methods (IS EMPTY, SIZE , MEMBER OF, IN) are currently not supported for mapped by (inverse) collections ... ; //System.out.println(query.getResultList(). size ());         // SELECT a FROM

ObjectDB 2.3.6

Improved performance of collection and map size evaluation in queries. Fixed a critical bug in page caching (issues #610 , #621 , #625 ). Fixed a bug in optimization of non ASCII string indexes. Fixed the new query HOUR function to return hours as 0 to 23 (using 24-hour clock). Fixed a regression

B-Tree Index

earlier, the size of the database: maximum Integer.MAX_VALUE pages (page = 2048 bytes by default

ObjectDB 2.9.4_03

Fixed a bug in using SIZE on byte[] in queries.

Server crash - Mismatch client-server protocol prefix

size (-Xmx1024m may not be sufficient). support Support Do you still see this error message

Remove of an entry from a @OneToMany collection is not possible if the enhancer is disabled

.class, 1l);   Assert.assertEquals(0, parentEntity.getChildEntityContainer(). size ());  

Negative snapshot user count exception

file size = 297009152, dirty pages = 1, update list s = 2, dirty page map = 1,   FastModel Ben

Exception in thread "main" java.lang.NoSuchFieldError: __odbTracker

Hi   there is something wrong with enhancement process I got that class was succesfully processed, log has size 0, enhancer is from build objectdb-2.2.8_08 and during object creation when some filed is initialised i got an exception   Exception in thread "main" java.lang.NoSuchFieldError

Unexpected exception when execute query without enhanced entities

;   System.out.println(resultList. size ());         em.close

each 1-2 days objects on some objectdb level lock/block each other

and will get back to you soon. support Support just a bit more parameters - the database size is around 60

Page cache File handling produced an java.io.IOException: Negative seek offset

is the size of page11.dat btc_es BTC EmbeddedSystems The stack trace indicates a missing synchronization in

Explorer bug ? Objects seem to be missing from database in Class view, but are present as references

) We see that 2 Project objects were created, however in the database Explorer it lists size =0 for Project

several times a day queries take several minutes

on query execution. Consider decreasing the maximum size to force updating the database file

huge heap usage

we are using objectdb 2.7.2_6. At a custumer we have huge problems with the memory consumption (see the heap dump attached). The database size is pretty small (1.4 GByte). Any idea ? hgzwicker Hans-Georg Zwicker Could you please share the heap dump or analyse it and provide more information

Database access error , Doctor hanging on trying to repair, production shutdown at our biggest customer

, do you have a ftp server where we could transfer it to ?   hgzwicker Hans-Georg Zwicker What is the size