ObjectDB Database Search

Hi all,   Honestly, I'm fairly new with JPA2 Criteria queries - but as far as code effort goes, it has saved me a bit of pain. I'm writing a dynamic query builder (only 1 level deep for basic entities) - but  even though I get most queries to work, I am getting the following error

to be more dynamic , and then schema evolution will be more natural and this issue will not exist. support Support

); I am afraid that retrieving pages that contain all the terms requires building a dynamic query

Hello, How can I save data dynamically such as "List" in Java - ArrayList, LinkedList, etc. thanks Seena Abdollahi Seena Abdollahi Software Engineer sabdollahi Seena Abdollahi Lists are persisted automatically as fields of entity classes. See chapter 2 and 3 of the manual for more details. support Support

analyzing the dynamic behavior we can see from the thread dump that a lot of our threads that are just doing simple queries (just selects, no update or delete ...) show locks like these (question is: why there are locks and how could we get rid of that):   log1: "qtp1523553211-271" #271 prio

must be selected dynamically like getDBForTenant(String tenantId). Is this possible or

 optimization is expected to be small, and irrelevant for criteria queries which are dynamic (i.e

approach  and generate persistence units dynamically for every tested combination of a DBMS and a JPA implementation. support Support

customed dynamic class ... but i'm not a specialist of java reflection and injection stuff. So i opened

that is similar to the current online backup (i.e. by running a special query against the database). support Support

, allow to close individual or all. c. Buttons to restart database, hot backup (remote server to local

again it should be recovered automatically. In addition you may use replication and online backup

via PMF? Switching is automatic - between a main url and backup urls, which may also reference

for backup and I read the docs many times but I'm still not sure I understand.  

ObjectDB 2.1 has been released and it includes important additions and fixes: Added Online Backup utility ( issue #16 ). Added Master-Slave  Replication / Clustering (issue #17 ). Added a PDF version of the ObjectDB manual (included in the download). Added sample (tutorials) Maven projects

unused space in ObjectDB database files when I back them up or restore them from a backup

, since the last breakpoint (i.e. an available db backup ), e.g. for debugging. In replication

, deployment, backup ). A site license should also cover rented / leased server machines (under some terms

, so it should be fine to change it (after a backup , to be on the safe side), but you will have to create a new database

Hello, I would like to know if it's possible to copy the content of a table representing one class of object to another table whithout having to use java object (no object instantiation) ? In fact, I would like to execute a native query like "select * into T0 from T1" My purpose is to backup

version did not have. So we replaced the file with a backup from older code and it works now fine.  Thanx! jakab Gergely Jakab

. You may try opening a backup of the database file (not in production) in the Explorer of the last ObjectDB version. support Support

). This is useful mainly for load balancing (by directing read operations to slaves) and backup

(and full backup ), it would be probably better to start it again with recovery enabled

you restore it manually, e.g. from backup ) but you should be able to persist a new entity of the same

database? Moreso, does Objectdb have backup tools to back up the singular object database file

default) but to support durability (the D in ACID). But a server with electricity backup (UPS

? We are using JDO for our application except backups which are done using JPA. I was playing with server

maintenance (e.g. backup ). Using external files might improve performance for very large files (e.g

Database max-threads objectdb.conf Settings Option" "How to do an Offline Database Backup

and known (as its schema is already stored in the database) then ObjectDB builds the class dynamically

as an exceptional arrangement in situations in which the object model is dynamic but it will require

Hello, we renamed a superclass and removed one of the subclass. If we then try to open the Database (with ObjectDB-Explorer) we get a "Failed to generate dynamic type ..."   Small Example: Generate Database public static void main(String[] args) { EntityManagerFactory emf = Persistence

use case for this? This is indeed unusual in Java, but may be more relevant to JVM dynamic type

Added support of enhancing classes with Java 11 dynamic constants. Added a warning if an expired activation is found in the configuration ( issue #2817 ). Fixed the error message when required enhancement is missing ( issue #2828 ). Fixed recording of large transactions over 2GB in size ( issue

online backup with no arguments . Added option for running the Doctor without activating disabled indexes. Fixed a Doctor bug in fixing old (

database and you can go back to the last backup before running the statistics query previously

) and some issues with a particular index, which was also flagged when I ran the database doctor on a backup

can be restored from recording files. Enabling replication , generating a live backup database

on a recent backup of the production database) and check if there are errors in the report. If you have any

Added support for manual starting of online backup threads ( feature request #2855 ). Improved query plan evaluation. Fixed a regressing performance issue in build 2.8.9_01.

when connecting. Additional servers are only used later, as backup , and not initially during connecting

property access mode. Fixed a bug in allowing page sizes larger than 64KB (which are not supported by ObjectDB). Fixed an issue of very slow online backup .

Fixed a bug in the new option to slow backup in client-server mode (see feature request #2681 ).

of reflection mode (no enhancement) by minimising  tracking backups . Improved concurrency by using

Added Online Backup utility ( issue #16 ). Added Master-Slave  Replication / Clustering (issue #17 ). Added a PDF version of the ObjectDB manual (included in the download). Added sample (tutorials) Maven projects (included in the download). Added support of disabling optimistic locking

ObjectDB Replication will enable managing the same ObjectDB database using multiple ObjectDB nodes or servers. This could be useful for distributed applications (e.g. in cloud computing), for load balancing, for improving durability, for backup , etc. support Support Master-Slave replication

Added a new Doctor.run(srcPath, dstPath) static method. Added an option to exclude inherited @Id fields in embeddable classes. Added support for manual starting of online backup threads ( feature request #2855 ). Added support for distinct mapped-by (inverse) fields. Improved query plan

also the removal of content that you want to bring back (which is impossible with no backup if changes

EntityManager conflict checks in NO DETACH mode . Fixed a bug in online backup of databases larger