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Connection is closed Caused by: java.io.EOFException

an EntityManager. I have checked throughout my code to ensure that all instances of EntityManager that I ... ="false" sync="false" path="." mode="write" /> <locking version-check="true" /> <processing ... ();         }     } } Please check if your application might create EntityManager instances without closing them. By the way


if locking version-check is set false? are the changes from process B lost if process A subsequently commits ... : <locking version-check="false" /> correct? Is that all that is needed to switch from optimistic ... works for me: 1) standard config file with these changes: <locking version-check="false

Doctor - high memory usage

. But since it is a background tool (integrity check can be done on a backup copy generated by the online backup) - I think ... with link to this database. lwalkowski Lukasz Walkowski I just checked the 64MB sample database. With 512MB max heap size (-Xmx512m) it works well with the default configuration - it took ~10 seconds to check

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

reported in this thread). Could you please check version 2.7.3_04 (which disables the change ... _03 (and 2.7.3_05), but apparently it exposes an existing problem, due to an additional new check ... on an attempt to modify a primary key of a managed object. Older versions missed some checks that were added

disabling JDO in objectdb embedded mode

part of ObjectDB and the stack trace does not mention ObjectDB at all. Please check if you have conflicting ... that mentions X.jdo where X is the name of an entity class. I will check whether I have conflicting ... . Therefore, ObjectDB must check if such XML files exist. Checking if the file exist should not throw

First query takes 4+ minutes to complete

="false" path="$objectdb/" mode="write" /> <locking version-check="true" /> <processing cache ... execution time should be very good, but if it doesn't, please post your test and we will try to check ... that demonstrates the issues we will check this further and we will also be able to check the second query

Database size is much larger than expected (x2)

! You can check it by repeating insertion of a pic of multiples. I can not send the 7GB file ... You should check your code, especially the conversion of images to byte[] - maybe unintentionally ...     } } The result database size is about 3GB as expected. support Support Another thing to check in your code

Unexpected exception (Error 990) on find

a separate private support ticket, and source code is not essential). Alternatively, you may check ... map values, but in this context, long strings as entity keys could be more relevant. Please check ... it with shorter values, but I will check on Monday. Probably its the combination of Key- and Value-Length. Stefan

Use temporary files to enable very large transactions

transaction size can be 100GB. Please check if this is sufficient for your current needs. support Support ... ="false" sync="false" path="." mode="write" />                 <locking version-check="true ... references. A check now shows that objects that are retrieved from the database, modified

Best practise loading big data

: Double check that you changed the cache sizes in the correct configuration file. Please read ... described before: - using a configuration with the attached configuration (double checked) - one open ... objects but maybe could happen with some heap size and GC setting. Can you check if GC is run

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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