About Object Database

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FAQ
13

What is the Java Persistence API (JPA)?

. Using plain old Java objects (POJO) to represent persistent data can significantly simplify database ... and objects). ObjectDB is the only database management system with built in support of the Java ... The Java Persistence API (JPA) is a standard API for accessing databases from within Java
JPA Doc
13

JPA Exceptions

to retrieve entity objects from the database. For example, when a required entity object is not found: or ... JPA exceptions are represented by a hierarchy of unchecked exceptions: java.lang.Object java ... , an attempt to update the database with no active transaction is represented by: Database update
FAQ
13

What is ObjectDB?

ObjectDB is an Object Oriented Database Management System (ODBMS). It provides all the standard database management services (storage and retrieval, transactions, lock management, query processing ... objects (and graphs of objects) in an ObjectDB database directly. There's no need to define tables or
Forum
13

Soft Reference Object Cache Recommendation

size limit being exceeded before the post attempt.  =(  ) I desire to have my persistent objects ... objects before more recently accessed ones.  I attempted to use Java SoftReference to my large byte[] and instruct ObjectDB to use soft reference for its Level One (L1) object data cache.  I disable the L2
Forum
13

Time Sequence Object Command DB

We (www.s2ssystems.com) have a time-sequential object command database.  I would like ... commands are generally used to trigger creation of transient objects.  The database can be branched ... again that the database is not an object database, but rather a command database.  You can of course
Issue
13

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

objects and updates by type per minute), etc. a link for downloading the up to date 60GB database ... queries without any object manipulation in these threads we how have compiled with the 02 version ... (0x00000000bc88c318) is related to reading from the database file using the new "objectdb.temp.concurrent
Forum
12

em.flush(); em.clear(); loosing data and not persisting managed objects

objects to database. Sometimes it does other times it doesn't. Here is my Entity. import javax ... .objectdb.com/database/issue/new com.objectdb.o.InternalException: null com.objectdb.o ... tracking management system called CMVC, since I don't have direct access to that database
Forum
12

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds ... any way to speed-up open time for big databases? Definitely, it's too long for 500 Mb database! We gonna work with ObjectDb databases which may have size more than 5Gb and opening database time
Issue
12

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

, which is part of one large ObjectProperty object of 2699 bytes that was divided to two database ... we have a database shutdown, logs are showing: [2017-07-10 21:07:23 #1 store] Database 'F ... : SectionClassifier{2->merger[2699]-missing:1}     on running Doctor it hangs after reading in the database, just
Forum
12

OutofMemory error with Object DB 2.0

after persisting 200 records and then the same transaction object from the same PersistentManager ... .commit(EMImpl.java:279) at com.anritsu.eu.database.DatabaseImplementation.storeItem(Unknown Source) at com.anritsu.eu.database.DatabaseMessageStorer.newItemParsed(Unknown Source) at com.anritsu.eu