About number

issue

Use temporary files to enable very large transactions

We have transactions in which many objects are created. These objects are no longer needed in the current transaction after creation. Unfortunately, we will receive an OutOfMemory exception because the objects are kept in the first level cache of ObjectDB. In the forum thread http://www.objectdb.com/database/forum/921 on post #4 you wrote, that ObjectDB should support very large transactions in further version. Can you implement it that ObjectDB used temporary files? ... difficulties) we will not be able to support unlimited number of Page instances. ObjectDB Support ... relevant information from the heap dump, such as type and number of instances of these byte[] elements in the heap, as well as paths ...

 
manual

JPA Entity Fields

Explains how to define and use primary keys in JPA, including composite and embedded primary keys.... Version Field ObjectDB maintains a version number for every entity object. The initial version of a new entity object ... in which an entity object is modified its version number is automatically increased by one. Version fields are used in ...

 
release

2.5.1

... Improved processing of queries with a large number of variables ( issue #114 ). Improved toString of ... Fixed a critical bug in handling a very large number of entity classes ( issue #139 ). Fixed ...

 
api-jdo

replacingFloatField(pc, field)

The replacement value of the field in the calling instance.(Method of javax.jdo.spi.StateManager)

 
release

2.5.0

... Improved processing of queries with a large number of variables ( issue #114 ). Improved toString of ... Fixed a critical bug in handling a very large number of entity classes ( issue #139 ). Fixed ...

 
manual

Database Explorer

Explains how to run and use the ObjectDB object database Explorer to view and manage Java/JPA/JDO objects visually.... In the dialog box select the entity class and specify the number of objects to construct. Click the Create and Persist button to ... This may be useful when working with classes with a large number of fields where displaying all the fields is problematic (for instance, ...

 
forum_thread

explorer NullPointerException

I studied ObjectDB a few hours ago and got some problems when use explorer . I run it and right-click in 'Open local database' window,and the all the pop menu item is gray and disabled,such as ‘new database’,'new directory','cut','copy' ... if I click 'tools---oprions' before open database, the errot I got is: [2012-05-21 09:51:11 #1 explorer] java.lang.NullPointerException at com.objectdb.o.CNC.p(CNC.java:253) at com.objectdb.o.EHL.d(EHL.java:55) at com.objectdb.o.VPN.(VPN.java:60) at com.objectdb.o.OPD.(OPD.java:69) at com.objectdb.o.OPD.(OPD.java:42) ... button after select the entity class and specify the number of objects in the dialog box, there is no response . ... the dialog box select the entity class and specify the number of objects to construct. Click the Create and Persist button to ...

 
issue

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

we have a database shutdown, logs are showing: [2017-07-10 21:07:23 #1 store] Database 'F:\Hummingbird\Objectdb\db\coreSystemDb.odb' is opened by 11028@wzbhb101 [2017-07-10 21:07:23 #2 server] Server on port 3333 has started by 11028@wzbhb101 [2017-07-14 07:08:38 #3 store] SectionClassifier: SectionClassifier{2->merger[2699]-missing:1} [2017-07-14 07:09:08 #4 store] SectionClassifier: SectionClassifier{2->merger[2699]-missing:1} Bug Version: 2.7.1 Priority: Normal Status: Closed Replies: 15 Type:  Bug ...

 
manual

Database Explorer

Explains how to run and use the ObjectDB object database Explorer to view and manage Java/JPA/JDO objects visually.... In the dialog box select the entity class and specify the number of objects to construct. Click the Create and Persist button to ... This may be useful when working with classes with a large number of fields where displaying all the fields is problematic (for instance, ...

 
forum_thread

EntityManagerFactory Fails To Swtich Over To Slave When Master Is Unavailable

I have a simple task to validate the sample code will switch over to the slave database when the master is unavailable. I simulate the master unavailable by stopping the master server; which generates the following exception below. What am I doing wrong? It appears the connection manager fails to try the second URL in the list: objectdb://10.9.2.15:9998//10.9.2.15:9999/test.odb;user=admin;password=password Thank you in advance. ... ; } }   // Find the number of Point objects in the database: Query q1 = em. ... ; } }   // Find the number of Point objects in the database: Query q1 = em. ...