ObjectDB Database Search

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Query filter comparing Dates

case. Working with dates could be very tricky due to time zones. In this specific test case ... ;// GregorianCalendar calendar = new GregorianCalendar(); All date and time values are stored in the database as time (e.g. in milliseconds) since 1.1.1970 UTC. For  TemporalType.DATE the hours

Pre-detach loading: retrieval by navigation not working in if statement

help me, as every time you inspect a variable it triggers loading of it, preventing discovery ... interpreter as well. Have you tried build time enhancement instead of using -javaagent? Please post relevant byte code after enhancement. support Support  Have you tried build time enhancement

ObjectDB is opening too many sockets

it instead of increasing system limits. We are using Ubuntu 18.04.5 LTS and after some time ... of time . java    17888  odb   14u  IPv6           ... indefinitely, but still I don't get, why some times it openes 70 sockets at once, and if I tried same

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds) for following code long time = System.currentTimeMillis(); m_EntityMgrFactory = Persistence ... (); LOGGER.info( String.format( "took [%d] ms", System.currentTimeMillis() - time ) ); Does exist any way

persisting object with long[][] arrays of array

;  @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL) public long[] time ;    ... ;     public TESTObject(String ids, long[] time , long[][] a1, long[][] a2, long[][] b1 ... ;    this. time = time ;         this.a1 = a1;  

Modifying something with Explorer -> app JPQL with Enum doesn't work anymore

. In this case rerunning the project many times doesn't help at all. Problem: the number of entities ... class or a standalone class. Part- time solution: run the project twice after the modification ... , because sometimes it doesn't work, but you don't know. It's the second time when I encounter this bug in 2

Wrong data stored in date only fileds

Hi, we have an object with the following fields:   private Date startDateTime; // Time stamp: start of recording in local time zone private Date startDate; // Date: date part of startDateTime private Date startTime; // Time : time part of startDateTime @Basic(optional = false) @Temporal

Occasionally slow requests in load testing

response times from the DB, around 10 - 15 seconds. Looking at the DB server process with AppDynamics ... is large - execution time may also be much longer than 10-15 seconds. The other stack trace (com ... in some cases and is slow in others. Also, the slow response times occur in wide variety

Mismatch client-server protocol prefix

:757) I checked multiple times if the versions match. They do. DB server version 2.6.2. Client ... checked the DB two times and installed the copy generated by the Doctor. It found no errors. We use ... . This method is called thousands of times a day by different daemons and webapps. It only fails in

TemporalType injection with Calendar using JPA

an embedded object as a primary key, which has time fields which I have annotated with TemporalType ... .foo.bar.jpa.enity.TimePeriod[ day, java.util.GregorianCalendar[ time =1306779283031,areFieldsSet=true ... .GregorianCalendar[ time =1306779283031,areFieldsSet=true,areAllFieldsSet=true,lenient=true,zone=sun.util

Join performance in Objectdb

can predict the time for such counting? TIA gzdillon Lai Yang Now, after 2 hours ... AND e.page=p Anyway, this still doesn't justify execution time of hours. Since you didn't provide a test ... select count(e.id) from Page e 1 java.lang.Long: 161143 Time : 23.889999 JPQL select count(e.sUrl

First query takes 4+ minutes to complete

part of startDateTime private Date startTime; // Time : time part of startDateTime : private String ... for about 60 seconds. By this time a number of new records are already being added by one of the threads. Then we run one of the above query and time it until we get the result set of 50 records. To run

Soft Reference Object Cache Recommendation

; All seemed to be lost, but then I reloaded the webpage a few times and started another "Post Reply ... .  The attachment upload reported a failure again.  This time I captured a screenshot.  ... -XX:InitialHeapSize=2000M -XX:MaxHeapSize=2000M -XX:+UseG1GC -XX:SoftRefLRUPolicyMSPerMB= time

virtual servers and one file

and compare the response time . I don't know the data structure of the objectdb file to force access ... Server 2016. If only 1-2 people work with the software at the same time , everything runs as fast as you would expect. However, as soon as more than 3 people are working at the same time , database queries

Grouping by date()

Hi, For some time now we can use date and time function in queries to extract part of date time ...  in queries: DATE(ts) - Extracts the date part (year, month, day) as a Date instance. TIME (ts) - Extracts the time part (hour, minute, second, millisecond) as a Date instance. Please try

Auto Date for Creation and Update

these time /date fields in a JPA lifecycle event methods . support Support Hi, Using the proposed solution I ... and time when book author has been created. */ @Temporal(TemporalType.TIMESTAMP) private Timestamp created; /** * Adjusting the field to UTC date and time before being persisted. */ @PrePersist public

Homepage and forum nearly inaccessible

times I have up to 15 seconds waiting time for a request to complete. Sometimes it doesn't even load at all. Sometimes it happens to load fast, but most of the time it's slow or very slow. Buy proper ... Canada too - one or two second response time . Thank you ObjectDB for your quick fix

Lock prevents PersistenceManager.close when retainValues = false

: TIMED _WAITING at java.lang.Object.wait(Native Method) - waiting on (a java.util.TaskQueue) at java ... : - None "JMX server connection timeout 18" - Thread t@18 java.lang.Thread.State: TIMED _WAITING at java.lang ... synchronizers: - None "JMX client heartbeat 2" - Thread t@14 java.lang.Thread.State: TIMED _WAITING

Connection is closed Caused by: java.io.EOFException

I am getting this exception on a regular basis, after a period of time of repeating the same code ... again for another period of time until same exception is encountered again.  I cannot pin down a pattern e.g. after a certain period of time ,  because the time  periods between exceptions are not

Vacuum - Reclaiming Unused Space In Odb

.  Our odb files are about 50Gb in size and are written to about a million times a day ... you for this information.  We have executed the doctor a couple times on some larger database ... We are trying to optimize the database size due to the time it takes to perform an online backup

TimeSeries and ObjectDB

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

openejb jpa jaas module

.*; /** * Created with IntelliJ IDEA. * User: apple * Date: 31.01.2013 * Time : 06:01 * To change this template ... : apple * Date: 02.02.2013 * Time : 23:15 * To change this template use File | Settings | File Templates ... with IntelliJ IDEA. * User: apple * Date: 27.01.2013 * Time : 02:30 * To change this template use File

JDO sequences from ORM file

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

evictAll() behavior

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

Java 6/7 Performance Comparison

= 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

Out of memory

Support Something is really wrong with new build. First, every time I run Doctor or server, ODB ... .hplxtool.beans.InspirationServiceImpl.getLastModifiedInspirations(10) execution time : 214 ms 2012-09-20 ... .hplxtool.beans.ReportingServiceImpl.getProductQuantitiesPerInspiration() execution time : 612 ms 2012

InternalError on multiple AND and JOIN Query

- Will use the pattern time _example-%d{yyyy-MM-dd}.log for the active file 09:30:08,884 |-INFO in c.q.l ... file name pattern ' time _example-%d{yyyy-MM-dd}.log'. 09:30:08,884 |-INFO in c.q.l.core.rolling ... .RollingFileAppender[TIMEBASED_ROLLING_APPENDER] - Active log file name: time _example.log 09:30:08,908

Master database switching to read-only mode, possibly caused by slave failure

of events was: 13:20 - our monitoring reported GC time per minute on the SLAVE instance over 30 seconds. The GC time on the slave instance continued to grow rapidly until it reached almost 1 minute ... requests sent to master after this time have failed with the same exception. 13:25:59 - the slave

Filename.odb$ Persisting Issue

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

Level 2 cache not hit in @ManyToOne

"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

General Performance Issues Illustrated with a Specific Method

.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

JRebel integration feature

.' 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

Optimization Question

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

Pessimestic Locking doesn't release when application unexpectedly terminates.

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

Failed to synchronize replicated database

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

Calendar in Criteria Querys

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

javax.persistence.EntityExistsException

may be thrown at flush or commit time . The current transaction, if one is active and the persistence

Freeze during save

.State: TIMED _WAITING at java.lang.Object.wait(Native Method) - waiting on (a [I) at com.sun.jmx ... : - None "Timer-1" - Thread t@27 java.lang.Thread.State: TIMED _WAITING at java.lang.Object.wait(Native ... .RolloverFileOutputStream" - Thread t@25 java.lang.Thread.State: TIMED _WAITING at java.lang.Object.wait

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

ObjectDB version doesn't look related, it may be simply the exact timing in which each thread dump was  ... , the customer now urges to switch to another database. we try to agree on a bit more time ... time the system is obviously overloaded? ObjectDB uses less CPU than most DBMS but eventually in

missing merger

, at least for some time . In addition, please clarify what do you mean by "system is completely unusable" in ... special activity today at the time that these errors start please report.  We are using Java 17 ... ; support Support If there is any other clue regarding special activity today at the time

combined index not used

without executing it is guessing. Think of the progress bar and the evaluation of time remained ... the actual execution time of each query plan from the best evaluated to the worst evaluated ... with multiple JOIN operations with very slow execution time you may be able to manually select the best

java 8 LocalDateTime is not working in query

My entity class has a field of type java. time .LocalDateTime. I'm able to persist entities and I'm ...   but it's working fine: SELECT t FROM Test t Joe Joe Khan New Java 8 date/ time types are not ... how you can use Java 8 date/ time using @Convert , we may be able to add this support. support Support

Query fails with failed to read

2-3 times per day we have a query that fails with:   Failed to read from file 'F:\Hummingbird ... is thrown? Any other special activity at that time ? Please post a full stack trace of the exception (strange ... we have it now 5-10 times per day. There is not any backup activity active during these times . It always happens

Best practise loading big data

We have scenarios in which we open up to lots of different Db files at the same time , each ... , even if at some time the GC collects the unused entities. When reading further, the cache size and the number ... are freed or that from time to time . the cache is cleaned up. Our scenario uses just one open

Server out of memory exceptions

. There shouldn't be more than 12 threads accessing the server at anyone time - if you're seeing ... the thread list on each iteration so you're right - the number of threads is growing each time I've changed ... play at any one time . I've run the test with -Xms256m -Xmx512m and the server with -Xms256m -Xmx256m

ObjectDB 2.6.5

property method names . Fixed a bug in retrieving pure time values (java.sql. Time ). Fixed a bug in MEMBER ... request #1658 ). Fixed a bug in persisting dates ( TemporalType.DATE ) based on time close to clock change . Fixed a bug in indexing java.sql.Date fields during time / time zone change . Fixed a bug in detachment of embedded objects ( if enabled ).

Exception makes the system unusable for several minutes

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

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds) for following code long time = System.currentTimeMillis(); m_EntityMgrFactory = Persistence ... (); LOGGER.info( String.format( "took [%d] ms", System.currentTimeMillis() - time ) ); Does exist any way

Negative snapshot user count exception

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

PersistenceManager.makePersistent(pc) - JDO Method

). But at commit time , the reachability algorithm is run again, and instances made provisionally