ObjectDB Database Search

is reading/ writing the files. The tests are showing that the HW RAID5/6 of HDDs deliver comparable ... files, so in fact it means sequential reads/ writes . If it is tested on small files the speed is getting ... ObjectDB read/ write the DB files by large chunks and then it parses it within the RAM (so it would mean

pessimistic exceptions, but it is more efficient to remain with optimistic locking (which is the default

a queue) you will need multiple  PersistenceManager instances. In ObjectDB 1.x pessimistic locks

to commit transaction: Failed to write the value of field field image.URI.baURI using reflection (error ... .objectdb.o.UserException: Failed to write the value of field field image.URI.baURI using reflection ... : Failed to write the value of field field image.URI.baURI using reflection at com.objectdb.o.MSG.d(MSG

, in which WRITE requests are served by one master server and READ requests can be served by ... data is divided between nodes. All the servers handle WRITE requests and READ requests of data ... for one server and when there is a need for more than one server to handle WRITE requests. support

down the application will still be able to read from the slaves but writes will not be allowed ... cart because that would require a database write . If the master is down for even an hour ... marker so it decides to write to A. Well there you go .. you have a high probability of database

.entities.instance.ProjectSnapshot smuessemeier Stefan Müssemeier Maybe you are writing to a database ... of the writing . But the writing is ok. Everything is written correctly as far as I can tell. When I ... only one persistence unit and writing without the added ;drop in the connectionURL. Still the error occurs

availability and fault tolerance? Unless the application is read only and no write , as long as ... ; So basically both read and write will always be going to the master and the load ... , not even read load) - Not for Read+ Write failover?   Thank you. Trianglehead Json Error Not

SELECT: TypedQuery query = em.createQuery(     "SELECT p FROM Point p WHERE p.id = " + element.getId(), Point.class); List points = query.getResultList(); WRITE : em.persist(p ... than the write method, in my very simple benchmark. I guess the reason there is no SQL in the write method

] javax.persistence.RollbackException Failed to commit transaction: Failed to write the value of field ... ) Caused by: com.objectdb.o._PersistenceException: Failed to write the value of field test.Squad ... ) ... 1 more Caused by: com.objectdb.o.UserException: Failed to write the value of field test.Squad

.   I'm getting this error: Caused by: com.objectdb.o._PersistenceException: Failed to write ... and write on d drive as everything is running on c drive.   Thanks, Eitan eitane Eitan Eibschutz Build 2.3.4_04 should fix the new "Failed to write to file" error. Thank you for the "mvn

data into the database. What I mean is that we have to write code that is different each time (or write some methods, but still varying input each time), and execute some main method to get blocks ... , MySQL workbench. We can write methods to batch the process, but this becomes annoying if we need

, and you will have to write code for making this schema change. support Support Thanks for your reply. Could you please elaborate more on the nature and complexity of the code that one has to write in the second ... "Could you please elaborate more on the nature and complexity of the code that one has to write in order to develop an application?" support Support

the error 'Failed to write the value of field field TestEmbeddableMap$MyAttributeItem.id using enhanced ... ; Exception in thread "main" [ObjectDB 2.6.4_03] javax.persistence.PersistenceException Failed to write ... .java:40) Caused by: com.objectdb.o.UserException: Failed to write the value of field field

(JpaQuery.java:719) ... 1 more While I wouldn't write the query with different expressions as shown ... ? The error does mean some pain in the neck since it's quite uncomfortable to write these queries by ... will probably work around the issue by writing these queries by hand - although this is not really nice

and compare. If I disable NetBeans compile-on-save (which seems to use the internal compiler to write .sig ... internal ObjectDB system property that you can set (on your web application) in order to write enhanced ... that you can set (on your web application) in order to write enhanced classes  to files: -Dobjectdb.code

overflow during string writing . What are the sizes of strings in that object and what character set is used? Maybe there is a bug in writing specific type of characters. Can you update this specific object ... when writing a HashMap in another PlacementBlockModel. The issue is rather connected to the size

(build 25.131-b11, mixed mode)   Running sample jar: - To generate data ( write ):     java -jar demo-0.0.1-SNAPSHOT.jar write /path/to/file.odb - To read data ( write ):   

cache, ie 10mb worse than 0mb? 2) (separate issue) I'm noticing that write queries are around 20-50x ... operations might be much faster because of using the cache (which is less effective in writing

all the committed updates to the slave. There are solutions that enable full cluster even with the ability to write ... databases on different nodes. support Support Hi I wanted test cluster so I ran 4 threads 2 for writing

in reading but not in writing . You can see this in the JPAB benchmark (compare 1 thread to 5 threads ). ObjectDB is faster than the alternatives also when using multithreading in writing but the gap

Please check the update urls and write them here (copy & paste from png doesn't work). I tried the first ... ) unless you use the Source button and write HTML explicitly. support Support Looking at your graphic, look

has _odbTracker field added) So, instead of DB write a standard serialization mechanizm is triggered. Finnally ... (and stack trace if available).  So, instead of DB write a standard serialization mechanizm

it won't scale enough, furthermore we'll always have a SPOF with odb server due the master- write ... cannot write to the same ObjectDB database concurrently. Future versions may remove this limitation

down to the leaf. The obvious design solution is to write the transactions to the database in sequence.  This is very efficient in that database writes are always appends to the end of the file.  

.    support Support Ok, thanks. I also after several failed attempts, I decided to write ... response but I solved this way, a function that does all the database.  I write the solution

even though there was no writing to the DB, they double in size exactly the amount of the resize value. This means everytime ... have recording set to write only.   bensteele Ben Steele From your description it does seems as

) to make database access for write . Nothing special here I guess: public synchronized void saveCollection ... while database thread is writing new data. I guess that the enhanced code should handle it somehow.  

Is there a way to show the executed Sql/Jpql in the console? wua Andreas Wurm You can set the log element in ObjectDB configuration to write logging also to the console:      ... to the console. To write query execution to the log, add the following logger element to the configuration

Sandeep Dhamale Currently, migrating data between ObjectDB and other data stores requires writing ... have to write java module with JPA to retrieve entity and then using some kind of ORM or direct JDBC persist

server and not for the slave server. To save space please try limiting recording to write operations ... something is blocking ObjectDB from writing changes and transactions to the disk. So the master database is not

) PS. Now I'm writing from IE. zmirc Mircea Chirac To check if this is a cache issue ... neither. I restarted the machine as well, but nothing. I'm writing thanks to IE now. zmirc Mircea Chirac

Hello, I just wanted to write another anotation to my key field so I can have a really simple index. This is the original code: @Entity public class ObjectDbEntity implements DataItemProvider ... to perform massive reads? ksii13 E ObjectDB is faster than other DBMS, not just in writing but also in

Added support for using ObjectDB with JBoss AS 6.0 / 6.1 . Fixed several bugs in handling eager fetch. Fixed a pessimistic locking bug . Fixed a bug in using primary key fields in queries. Fixed a bug in queries on deleted objects before commit / flush.

O'Hare It seems as a separate issue. Maybe related to pessimistic locking. Can you provide a test

UnsupportedOperationException  error message. Fixed a pessimistic lock timeout bug ( issue #520 ). Fixed

instead of Long ) and then updated. Fixed retrieval with pessimistic lock to bypass cache and to force refresh.

Added JPA XML validation schema files to Maven/JEE objectdb.jar. Added automatic release of pessimistic locks on client-server connection failure. Fixed an OptimisticLockException bug on commit after flushing a removed modified entity object. Fixed a  NullPointerExeption on new index building

Fixed a bug in using AS in SELECT NEW (breaks some Spring Data JPA queries). Fixed a bug in tracking changes to new collections after flush ( issue #2640 ). Fixed a StackOverflowError on no access permission to objectdb.conf ( issue #2643 ). Fixed a bug in managing pessimistic locks after using

-2.4.4.jar:] at com.objectdb.jpa.criteria.JpqlWriter. write (JpqlWriter.java:94) [objectdb-2.4.4.jar ... :] at com.objectdb.jpa.criteria.JpqlWriter. write (JpqlWriter.java:90) [objectdb-2.4.4.jar:] at com ... .jpa.criteria.JpqlWriter. write (JpqlWriter.java:94) [objectdb-2.4.4.jar:] at com.objectdb.jpa.criteria

into when the limit is hit. What would be a preferred action? Stopping writing to the log? Ignoring the limit and continuing writing to same file? Or maybe just improving the error message to indicate that it is writing to a log archive directory that failed? support Support Agreed

which blew out the logs: Attempt to commit a transaction after failure in writing to database file 'F ... to commit a transaction after failure in writing to database file 'F:\calculationservice\objectdb\dbs ... .objectdb.o.UserException: Attempt to commit a transaction after failure in writing to database file 'F

to the database.  When the client application starts writing , several of the threads throw the above exception but most of the threads are able to do their writes without issue.  CAPdev CAP Dev ... several threads. Please try build 2.4.4_10 that should solve this issue. By the way, writing

message itself doesn't provide much information. Alternatively we can release a new build that will write ... also to change database content, i.e. to write to the database? Build 2.7.5_05 included in addition ... rather than read- write lock in previous builds, when "objectdb.temp.concurrent-file-read" is enabled

( ) piped. write (13) piped.flush() sleep(100) piped.println( ) piped. write (13) piped.flush() sleep(100) piped.println( ) piped. write (13) piped.flush() } }   Now here's the strange bit, the license url

to try now. support Support I would recommend to write a test case for this scenario. We currently ... More details are needed in order to write a test case that can catch such an issue. We already have tests ... for us to reproduce or write tests for. It has happened several times - this is something which should never happen

. The attached test writes data to a db. Then it starts up 2 groups of 10 threads, one group ... performance. If the cache is not used (e.g. in code that only write new objects and never read) caching

after failure in writing to database file 'C:\Users\Home\workspace\Object.Test\test\persistTest.odb ... : Attempt to commit a transaction after failure in writing to database file 'C:\Users\Home\workspace

/ writing to objectdb. The issue occurs just once during our test, other instances of this enhanced class ... : for single read/ write /update/delete: - we create new EntityManager, do the operation in transaction

such entity class could be either accessible for READ or for both READ and WRITE . More ideas and feedback ... might be to look at it in terms of CRUD as opposed to READ/ WRITE . ThreaT Ashton Hogan