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Listing large number of complicated objects with paging.

screenshot) and after running it 3-4 times in a row cause java.lang.OutOfMemoryError: Java heap space ... need to add some more heap space for ODB server (database is 560MB large)?   lwalkowski Lukasz

Degrading performance overtime

of what that property does please? dansmith Daniel Smith By default, when a database file is extended, new file space is cleared with zeros. With this settings, the new file space may contain garbage (such as data from

Object belongs to another EntityManager - ERROR

, since every EntityManager manages its own space of managed objects, and a managed object of one EntityManager should not

Extended mapping-definitions

' (or what objectDB calls the space to save entities), called 'MetaClass'. And so apples and oranges

persisting object with long[][] arrays of array

(as you save a lot of small allocations and space for references), not just in persisting to the database. support Support

Server closes if large query runs out of memory

of Java heap space in any scenario. Regarding a query that returns too many objects, consider

How do handle fields with java.net.URI class

a copy of URI as string also. But this consumes a lot of additional space . Netzverb Andreas Göbel

Removing entity class

ObjectDB database, in order to make space for new entity? Thank you in advance for any answer. Best Regards

Online Backup in client-server mode

Hello, we have issue with online-backup when using client-server mode. It seems, that it is working the following way. When we run the backup, server is creating tmp file for whole database and then copying it to the target location. So it takes twice as long and consumes twice storage space

ObjectDB version 2.3 has been released

byte[] by reducing required storage space . Removed a shutdown hook that leads to memory leak ( issue

Composite Index error 328

to the index (on the left side) will usually decrease performance due to a larger index space

Size of recording directory keeps growing

. If it is "all" you can save a lot of space (and improve performance) by switching to the "write" mode

Intermittent Server Shutdowns Due to Out of Memory (OOM) Issues

, anon-rss:83478100kB . System resource checks confirm ample free memory and disk space before

TimeSeries and ObjectDB

an entity object. This could be efficient it terms of space and retrieval speed but may be more expansive in

UserException - Object User#2 belongs to another EntityManager

(which is forbidden, since every EntityManager manages its own space of managed objects, and a managed

ObjectDB version 2.2 has been released

Doctor to handle additional issues. Improved query execution planner. Improved cleanup and reusing space

@MappedSuperclass and @Transient not working as I expected

ObjectDB consumes much less space than the same data in a JPA/RDBMS combination. support Support

OutOfMemoryError on search after update on DB created with DB Doctor

we get: Exception in thread "Thread-30" java.lang.OutOfMemoryError: Java heap space at java.util

First persist takes long time

storage space , etc.) so this is expected. If you are concerned because you have to repeat

collection of embedded objects

they are mainly used to save space and improve performance. In many cases queries will run faster

drop a column from table

Hi, I want to drop one column from my database table suppose i have 3 column (id, name, address) now i want to drop address. then what will be the query or procedure..   Bimal Bimal kumar dalei Just remove the field from the entity class. See Automatic Schema Evolution . Space in the database

Problems with Tutorials » JPA Web App (Tomcat) » NetBeans JPA Web App

, cheers, and thank you in advance,   Alan alacalcas Alan Alan, Wow so i just spaced

Logging problem on attempt to start a Server that is already running

It seems that there is a bug in logging mechanism, if you try to start the database which is already started it starts filing the log continuously until it runs out of space on disk. How to check is the database runing from command promt. regards.   peric.emil Emil Perić This is caused by

Searching lists within objects

persisting a new one (this could also save space in the database). Split the query - first find the relevant

Iterating over large result set

Hi, Few days ago I was writing some code to iterate over quite a large dataset. Fitting those data in memory was quite a challenge even with 3GB heap space . So I did paging using two loops. for (int page=0; page

100% CPU when using multiple BETWEEN

with 2800 records) throws a "java.lang.OutOfMemoryError: Java heap space " exception. Emil prolancer Emil

possible index required for improving query performance

the space that the index takes, but it is only required after adding new indexes. support Support

find repeated records by JPQL

: Java heap space at com.objectdb.o.SBT.readArray(SBT.java:156) at com.objectdb.o.ART.readStrictly

@ElementCollection of type enum

, and it is also more efficient, since numbers are more efficient than strings (take less storage space

JPQL JOIN FETCH Error

a... java.lang.OutOfMemoryError: Java heap space This is after the db crunches for about 20s or

Replication error on slave restart

server and not for the slave server. To save space please try limiting recording to write operations

2.7.3_03 Erroneous "Attempt to modify a primary key of a managed object"

without database schema change, and save some space in memory. You can still use StringIdentity

Efficient query on EmbeddedId

more space (i.e. more database pages), which means more work to manage it, and possibly harder to cache

How to store and compare Date up to sec.

, however, that internally ObjectDB identifies simpler date/time instances, such as in your question, and their storage consumes less space . support Support

EM close causes an exception

.OutOfMemoryError: Java heap space At what stage did you get the exception? What heap size were you using

OutOfMemoryError in a query with many variables

heap space java.lang.OutOfMemoryError: Java heap space at com.objectdb.o.WHP. (WHP.java:110) at com

Negative snapshot user count exception

could be to store many large objects and then to delete them, creating more space and avoiding resizing

ObjectDB 2.3.0

). Improved persisting byte[] by reducing required storage space . Removed a shutdown hook that leads

ODB-FileWriter holds unecessary entity reference after transaction and entity manager are closed

space limitations. Why the entity DBVectorStepBlockCollectionImpl is still hold by ObjectDB? Best

Memory leak in com.objectdb.o.CST

for very large queries) the connections in the pool hold unreasonable memory space . Please try build 2

Allow removal of entity class from ObjectDB & Explorer

it, thus to get space for another one. Currently, we are not able to do that, which is frustrating. We're

ObjectDB 2.2.0

cleanup and reusing space after index deletion. Changed default configuration (enabled recovery

database corrupt

your application and consumes a lot of disk space , so it is unclear if it is applicable

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

) at 80% average - SSD, around 100 GByte free space , no significant/bad latency or queue

Unexpected error when loading all entity instance

again. The database file is corrupt. I checked the HDD for errors but there are none. The disk space

Database File Encryption

). Still, this can be a nice to have feature in some applications. support Support Our company works in the healthcare space

missing merger

hours Maybe the exception frequency will increase if Actions instances will take more space , as

Error during closing an entity manager

, which has a separate space . Apparently the new build changed the exception from the one in #3 above to 

ObjectDB 2.7.2

database space after removing an index. Improved error message on attempt to enhance a class in a jar

ObjectDB 2.8.3

Added support of Java 8 date and time types (issues #1495 ,  #2564 ). Added information in the Explorer on consumed database space ( feature request #2540 ). Fixed handling enum types that implement interfaces in the Explorer ( Issue #2542 ). Improved memory cleaning when entity objects