About client

forum_thread

Problem upgrading

Hello! We are trying to upgrade from 2.6.3 to 2.6.6. Now our application throws an exception. It's generating endless log files. I had to turn up Xmx to even see it before the JVM crashes. (Our web framework tried to show the exception on the client) I did a full rebuild of the project. It's using the right version of the enhancer. There are no code errors. If I change everything back to 2.6.3 it starts to work again. Any ideas? Best Regards   Here's a part of the output: ... (Our web framework tried to show the exception on the client) I did a full rebuild of the project. It's using the right version ...

 
forum_thread

how explorer queries work

i'm curious as to how the explorer is able to execute queries when its obviously not aware of the object model that i built. the reason is because i have an application where i want to be able to execute somewhat generalized queries and i won't know what classes are in the object model ahead of time. this is especially curious to me in client-server mode since the .jar with the object model classes is on the server side, not the client side where explorer is running. ... ahead of time. this is especially curious to me in client-server mode since the .jar with the object model classes is on the server side, not the client side where explorer is running. i can figure out how to load the ...

 
manual

Entity Management Settings

Explains settings and performance tuning of JPA entities in ObjectDB, the fast Java object database for JPA/JDO.... specifies front end settings that are relevant on the client side and in embedded mode. The default configuration file ...

 
forum_thread

use of Singleton into tomcat

hi all. i would write a class singleton that encapsulate the entitymanagerFACTORY    into it.(the entitymanagerFactory  IS A property of the only instance of class singleton. (the class singleton is not a Ejb!!!!!!!!!). into tomcat it not possible  use ejbs............. i have to manage the concurrency for the operations on db............... with a method static i can get the only instance of singleton for manage all operation on database. I get a instance of it into multiple servlet. ... methods into singleton for read, update, write at db if 2 client it call the methods on mode concurrent????? write me a example ...

 
forum_thread

Spring + Maven + persitence.xml

Hi, I tested ObjectDB embedded and it is really fast! Everything worked out of the box. Maven: <dependency>    <groupId>com.objectdb</groupId>    <artifactId>objectdb</artifactId>    <version>2.4.3</version>   </dependency> Persistence.xml ... My goal now is to realize same thing using a client version. I started the server on port 6136. Did not figured out how to ...

 
forum_thread

Log is almost empty (log level 'trace')

Hi, Using 2.4.6_01 version on Linux (2.6.18, VPS)..  Just wondering what should I suppose to see in a log file with a log level 'trace'/'debug'.. Trying to fix an issue that server version sometimes accidentally quits without any notice.. My log file (independently on whats specified in config file) has only database open/close messages, some query.compiler info but nothing more..  Is that right behaviour? Are there are server statistics API/logs available? Regards, ... sudden quit. Does the process exit? Note that in client-server mode you usually have two log files, one on the server side and the other on the client side. If there is a connection problem, an exception stack trace should ...

 
issue

query returns failed to read from database file

we have since today exceptions on executing some queries like this: Failed to read from file 'F:\Hummingbird\Objectdb\db\coreSystemDb.odb' we are using objectdb 2.7.2_05 in the objectdb log there is no message       Bug Version: 1.04 Priority: Normal Status: Active Replies: 2 Type:  Bug ...

 
issue

[ObjectDB 2.6.9] Unexpected exception (Error 990)

[2017-03-29 14:04:44 #1 client] [ObjectDB 2.6.9] Unexpected exception (Error 990)   Generated by Java HotSpot(TM) 64-Bit Server VM 1.8.0_121 (on Windows 8.1 6.3). Please report this error on http://www.objectdb.com/database/issue/new com.objectdb.o.InternalException: null com.objectdb.o.InternalException at com.objectdb.o.BYR.o(BYR.java:113) at com.objectdb.o.BYR.w(BYR.java:206) at com.objectdb.o.VUT.j(VUT.java:350) at com.objectdb.o.RST.C(RST.java:194) at com.objectdb.o.RTT.l(RTT.java:134)... [2017-03-29 14:04:44 #1 client] [ObjectDB 2.6.9] Unexpected exception (Error 990)   ...

 
issue

[ObjectDB 2.4.1] Unexpected exception (Error 990)

Hi, getting this unexpected exception, would welcome advice: ... exception (Error 990)   Generated by Java HotSpot(TM) Client VM 1.6.0_29 (on Windows 7 6.1). Please report this error on ...

 
forum_thread

Intermittent Exception "Attempt to update types in read only mode"

I have a master/slave(s) setup and I am finding on the slaves that the slave client will get this message when trying to establish an EntityManager to the slave: ... setup and I am finding on the slaves that the slave client will get this message when trying to establish an EntityManager to the ...