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forum_thread

Spring Transactions (@Transactional) within ObjectDB

Hi, We are using OBD with Spring and transactions are managed by Spring. Our spring service interfaces take list of objects and persist them and the interface service is marked as @Transactional. We iterate through the list apply business validations and persist them one by one in a loop. ( Using Spring Data) We have noticed that in a loop 1st object is persisted and then we if lookup the same object we don't get it back on lookup. ... ObjectDB IN case of hibernate I can use something like <property name="org.hibernate.FlushMode" value="auto" /> ...

 
issue

error 990 ?

This is what I got today: [ObjectDB 2.2.5] Unexpected exception (Error 990)   Generated by Java HotSpot(TM) Client VM 1.6.0_31 (on Windows 7 6.1). Please report this error on http://www.objectdb.com/database/issue/new com.objectdb.o.InternalException: null Bug Version: 2.2.5 Priority: Normal Status: Closed Replies: 1 Type:  Bug ...

 
forum_thread

ODB should auto-restart if it detects it's necessary

Hi! I find very tricky the need to restart ObjectDB server after schema modifications in a distributed environment. Moreover, not doing it does sometimes trigger ugly errors, which mean application downtime. It might be very useful to have an additional feature (that could be enabled/disabled in objectdb.config) that each time ObjectDB detects a schema change that requires restart, it should automatically restart itself. This way we save a lot of headaches from our dev. ops. Currently we have to manually do: ... This is how the error looks like if I enhance the classes before execution with: Enhancer. enhance ...

 
issue

Server crash - Mismatch client-server protocol prefix

We've been having a problem where our ObjectDB server goes unresponsive every 2 days or so.  I've reviewed the server-side logs, and there are no events logged shortly before the crash.  Once the server gets in this state, it is unresponsive to bin/server.sh restart; I have had to reboot the entire server on which it's running.  The only recorded symptom is a client-side error (which fortunately gets auto-mailed to me): ... snapshot of our database via private channel if you would like. edit ...

 
forum_thread

@Unique member combination not working

Why does the below code not enforce unique restrictions?   Person.java ... Notice that adding Unique to an existing database is like adding an index (since  Unique is implemented as an index), and ...

 
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} ... that are currently posted (already any idea how things like these can happen ? how can we go on ivestigating and fixing ?) ...

 
forum_thread

find() delay

Hi, I tried objectdb in following steps: 1, for 1 to 30 {trans.begin(); create typeC o; em.persist(o); trans.commit();} 2, for 1 to 30 {p = em.find(typeC.class, i); print(p)} So simple a test, there is no result in one go; I have to disable step 1 and run again, then Step 2 output the expected results. I tried em.flush(), em.clear(), etc.. that do not work. Any idea? TIA ... you have. Please try to generate a simple test like the one above for any other problem that you may have. Otherwise it is ...

 
forum_thread

Memory leak while merging parent with No Cascade annotation with children

Hello support, While tracking memory leak in my application i suspected a memory leak in the merging object db implementation. The test case is the following, just run and watch the "Memory Used" by comparing Cascade.ALL (or Cascade.MERGE ) to nothing. Tested with last version of Object Db ( 2.5.5_05 ) ... it is slower and it is more vulnerable for issues like this. ObjectDB Support ObjectDB - Fast ...

 
manual

GROUP BY and HAVING clauses

Explains how to use the GROUP BY and HAVING clauses in a JPA/JPQL query.... clause. The HAVING clause for the GROUP BY clause is like the WHERE clause for the FROM clause. ObjectDB supports the HAVING clause ...

 
issue

Internal exception when quering

Hello, following exception occurs when quering objectdb: ... are right. When do you plan to fix this issue? We would like to avoid checking for duplicities in every list of values in our ...