ObjectDB Database Search

to the TimeSerie entity - I currently have to retrieve the whole timerserie since beginning of time ... . More generally: 1- is ObjectDB suitable for large time series? 2/ If so - any example would be helpful - on how to organise the data. Thanks  EKK     EKK Emmanuel Keskes ObjectDB can manage time

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there, the XML validation failed at enhance time . How does it appear in the package.jdo file used ... circumstance, and doesn't work most of the time . It turns out that specifiying and retrieving the Sequence is only working, as above, when accessing an ObjectDB file for the first time . If I access

me what to check br   Tomasz Tomasz Wozniak Hi i've changed enhacment from the load time to compile time ... more details about the load time enhancement that didn't work - did you use javaagent? which JVM ... I must give additional option?   To Enhance classes in load time i did sth like this com

= System.currentTimeMillis(); System.out.printf("Load Time %s ms\n", (end-start)); Java 1.7.0_51-b13 (MacOS X) Output: Load Time 30629 ms Java 1.6.0_65 (MacOS X) Output: Load Time 329 ms Also see a similar execution time when closing the entity manager, however any operations once loaded appear

is terminated with System.exit . support Support Sorry for the delay in response time - been busy ... time , stopping the program, and modifying code for extended time and all variations in between ... IDE. Each time the application is terminated it is done so by using the 'X' on the window produced

"user". "user" is loaded each time from the DB (tested by changing data in explorer and reading in ... each time , even though user 5 has been previously loaded by find by id and its class is @Cacheable. Shouldn't just 6 and 7 be returned fresh (the first time , then loaded from L2 Cache each time )? I

.phsp.pojcs.Identifiable; import org.joda. time .LocalDate; import org.joda. time .Period; import org.joda. time .PeriodType; /** * * @author Dr. M. H. B. Ariyaratne, MBBS, PGIM Trainee for MSc(Biomedical ... to get the results in milliseconds rather than 3 seconds" was that the execution time should be much faster

.' The JRebel technology is helping to save me months of development time per year, and it helps avoid ... and other ObjectDB enhancement techniques, just javaagent, compile time enhancement may offer a way ahead ... , for the first time in years (I had tried JRebel many times before but the clashes with ObjectDB

of data objects called tracks. These tracks change very frequently over time (every 10-15 seconds ... more embedded objects whenever possible. Delaying the delete operations to time with less or no activity ... together and they get persisted to the database in the wrong order causing a period of time where the current set

with expiration time . For example, if you know that transactions that need that specific lock take no more than 1-2 seconds to complete, then setting an expiration time of 5 seconds should be safe ... ), the locking time will still be short. We can add support of either expiration time for locks, or

state as some basepoint (which is also taking quite lot of time on bigger files ... , but need to keep them separately. And I think, that we would need to truncate transaction files time to time .  Allowing it on runtime by replying transactions to the last basepoint

temporal types: java.sql.Date - representing date with no time . java.sql. Time - representing time with no date. java.sql.Timestamp - representing both data and time . If possible, you should use these types

 odb file and inserts 200 records at a time . The transaction obtained from the PersistentManager ... the same issue. Also if I close the PersistenceManager every time I commit a transaction and open new ... . If you think there is a change in the situation, I will have to arrange heap dump upload(last time

_ of database adds over a great period of time , and occasional querying.  No record in our database ... the most CPU time and spotted these after letting it collect data for about 20 minutes: com.objectdb.o.SFL ... being cleared out at all, and our memory profile rises steadily throughout run- time . This climb is exacerbated

, if the database is opened again for a longer time . Is that the case? btc_es BTC EmbeddedSystems ... is automatically rebuild, if the database is opened again for a longer time . Is that the case? Yes ... of it and a few other things that would otherise cause serious issues. At the same time , it looks like adding

: I discovered to my horror (using Java decompilers and .class file time stamp checks ... enhanced -  they are indeed enhanced (as one can prove using time -stamp checks and the decompiler ... operations. I checked the timestamp of the enhanced entity classes, and they are time -stamped

within Tomcat and uses ObjectDB. Each time I upload a new version of the web ... ;           TIME CMD 20256   pts/0    00:00:00 bash 20928 ... ;         TIME CMD 24450     ?      00:07:21

'}? The only solution is keep time and date i other fields and do that same wiht DAY_OF_WEEK? Solek Henryk ... .Timestamp, java.util.Date with @Temporal(TemporalType.DATE), @Temporal(TemporalType. TIME ... all the date/ time types support the same functionality. If you still have issues with working

Inspiration entities in database right now. With 'cold' db file execution time of this query is between 1.9 sec and 2.8 sec. On 'hot' db file  without query result in cache, execution time is between 500ms and 1.2 sec. The same query without counting products runs in 15-30ms each time . My question

to perform backups more often, several times a day, in order to always have a backup that's closer ... the previous backup, allowing us to go back to a previous backup time and not necessarily be stuck ... , allowing us to go back to a previous backup time and not necessarily be stuck with the last one. Yes

and then redeployment solve the problem. You may also try using build time enhancement ... and redeployment several times , but the exception is still there. I added a call to enhance directly into ... you for the update. Build time enhancement is always preferred when possible. support Support

We are for a some time using joining the thread ODB-IndexActivation to prevent issues ... we've run into issue, that in some database the Index rebuild takes a lot of time (e.g. 20 minutes ... finishes, the process will restart the next time the application is started. support Support

.stepNumber = ? Can you explain why the first query needs so much time or do you have a hint ... with the bottlenecks of the query execution. Why the compareTo() calls need so much time ?   @Entity @Access ... that it may take some time for a new index in a large database to become active as it requires background indexing

enhancement methods are listed in the manual . Build time enhancement is preferred, since it enables ... the enhancer outside the development and build environments. support Support Build time enhancement is tricky since the path will change depending on which environment the jar is run on. Load time enhancement

and do enhance them at runtime, not compile time .. ?   Alex quasado Alexander Adam Multiple processes ... during enhancement, so the enhancement has to be performed before deployment (at compile time ). This works ... time , and in that case we should look for an alternative solution that matches your specific needs

Ran into this error for the first time (after many years of using odb): Caused by: com.objectdb.o ... 2 instead of 3) Also the first time I'm using odb in C/S mode rather than embedded ... , I don't expect more than one thread to access a database at any one time , and in the rare case

We have a new performance bottleneck, if we use EM.find() on the same entity type 10.000 times in ... times we cannot see a performance bottleneck. @Entity public class EntityA { @Id @Access (AccessType ... The information in the screenshot is limited, but maybe it indicates spending too much time in

to around 400000 entities of one class (database file size around 1.5 GByte). The response time of standard ... , and query execution time . support Support Object class is defined like this (indexes are defined ... = '(CU)' and (c.classIdentifier = '(RG)' and c.objectName = 'CAM-MILLING') and o.type = 0 Time

applications at the same time on one machine - each application is using an ODB file (each one is using ... bk FROM OBN bk ORDER BY bk. time ASC", OBN); ) 2/ after a little while - some of the applications ... .mrg file - but b/c there are several applications running at the same time - maybe one application

1. Is it possible to run async objectDb queries for long time operations and stop them if it necessary? 2. Is it possible to stop sync ObjectDb query from another thread for long time operation ... . You will also need a separate EntityManager for that thread. Stopping a running query is not supported but restricting execution time is supported. support Support

reading/writing of large data fewer times ) or the DB file is only a big container in which every DB ... of small data more often, so the seek- time is the most crucial and not the transfer-rate) ? jakab ... the seek time . support Support That was my guess too, but I wanted to confirm it. Thanks! jakab Gergely Jakab

Date/ Time Information maybe: .. /Users/backup/mybackup.objectdb   2. What about the $odb File ... of the database file, and it would be located in a sub folder whose name reflects the date and time . Additional ... objects, so there is no need for the whole bunch of backup files over the time . And our customers

a record for a specific time . The hint property is: "javax.persistence.lock.timeout" I have a situation ... at a time . The System works, however, sometimes it throws this exception: Failed to update object com.x

time . I provided the zip file mentioned above. But them it throws an error that source not found ... of my existing project. I added the Objectdb.jar file in build path. There were no compile time errors

the entities?  Thank you. peric.emil Emil Perić At this time , the exact cause of the issue ... . Report attached. This time , we couldn't resolve it and had to migrate to another database

Hi, From time to time we are getting following error in our project when trying to insert/update a record in database [ObjectDB 2.4.6_13] javax.persistence.RollbackException 10:29:14,880 ERROR [stderr] (http--10.23.3.98-8081-5) Failed to commit transaction: Object 'pbdmodel.impl.OrgJedinicaImpl#8

this exception occurs around 2 times a week:   [ObjectDB 2.7.6] Unexpected exception (Error ... the exception is expected to be thrown immediately. If you see the same exception repeating many times in a short time , maybe this is caused by repeating the failed operation many times (automatically or

I found the following stack trace in my log files; it's cropped up a number of times : [2013-08-23 ... shows up a number of times , and today at 10:14 AM PDT we started getting the mismatch client-server ... time (I think 2 years?) without these issues, two possible factors may be relevant: Your move from

hours of my time . Please attend to this as soon as possible and fix this carefully. I look forward ... , initialization of collections, etc. - because extra operations take extra time and ObjectDB is selected by ... the application programmer has to do it with his/her hands in tedious code each time .   webel

period of time . This happens in all versions   hgzpincher Hans-Georg Zwicker The problem ... on this issue) is shown (log #127), but that also happens at the same time of a query execution ... seconds timeout set. At the times when the timeout happens the system is very slow hgzpincher Hans

, But how can that be because we're talking of the same class type.. the one that works at the first time but fails the second time and works third time again so I would doubt

.close(); } } Run it twice, and it will run to completion the first time but bomb out with NullPointerException the second time . Entity class, in package testcase: package testcase; public class Thing ... package; you can verify that it is being read at run- time by introducing an error such as an invalid

of different Db files at the same time , each with own entitiy manager and open transaction holding ... Lochmann support Support  we open up to lots of different Db files at the same time How many databases? Do you need all of them open at the same time ? support Support

) { this.loaded = loaded; } No matter whether using javaagent run- time enhancement or post-compile enhancement ... (an no matter whether using compile-on-save or not) I get at run- time this error (and for every subclass ... = loaded; } I don't have time to offer an isolated test case, but I found the result reproducible

to store String, and Joda DateTime.  However the test code at this time is just storing ... application for your review.  Please advise. CAPdev CAP Dev This time it seems that the problem is in ... is performing very well now that I have adjusted my executor and allowed for enough time for the worker

that you have reported till now are related to using flush extensively (many times until commit). You should avoid ... flush extensively (many times until commit). Before testing build .._10, as a separate topic. Just ... . Thanks for attending to this bug, and for taking the care this time to compare with the offered test case

did already. But after adding new ChangeSet instances it gets corrupted all the time . So I repair ... . New database copy is ready at: db/smartcal.odb.fixed I enabled Recording so next time I will be able ... Markus Ritter Yes, please keep a copy of the repaired database that you just created, and next time

times per day we have a simple object remove (entityManager.remove) that takes more than 5 minutes ... unfortunately it cannot be reproduced as it just happens spuriously several times a day. the class ... addition to this slow behaviour we have several times a day the situation that a normal select

environment, but now in field. Object DB version was upgraded maybe two times in the last months in ... version 2.8.4 that fixed that issue. support Support I think the schema may changed 2-5 times ... for us to reproduce or write tests for. It has happened several times - this is something which should never happen