About time

forum_thread

Queries are slow on a large database

Hi, I have a 12GB database with 787603 entries. It is much larger than usual and there are performances issues. I am doing small queries and they take much longer than I expect, i.e.: Get the total number of entries Get 25 consecutive entries (i.e. 0-25) Get one specific entry On average each query needs 4 to 5 minutes to return a result. I have been adviced to use indexes but they are already used through the JDO Metadata file. For instance I use this class: ... Reference Page... , with very fast execution time. Similarly to get MAX/MIN values: SELECT MAX ( m ...

 
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objectdb-2.6.9_02 (with "objectdb.temp.no-enhancement-crc-check") vs. generic classes with interfaces: detailed investigation

objectdb-2.6.9_02 (with "objectdb.temp.no-enhancement-crc-check" system property) The following is a detailed report on investigation of multiple issues that have been mentioned in the following forum postings and issue reports (but please do not visit them from here now, the diagnostics there are now obsolete): - Issue #282 - ObjectDB-2.6.9: Failed to commit transaction: Failed to set numeric value of field property Element.id using reflection ... to my horror (using Java decompilers and .class file time stamp checks) that when running my "console" test app in NetBeans IDE ... they are indeed enhanced (as one can prove using time-stamp checks and the decompiler), so the log message is inaccurate . ...

 
forum_thread

NullPointerException while setting a new property value

Hello, we are using ObjectDB version 2.4.4 and we are unable to resolve following NPE on enhanced entity: java.lang.NullPointerException at com.objectdb.o.ENT.beforeModifyMember(ENT.java:1099) at model.PluginMetaData.__odbSet_maxAllowedDownloads(PluginMetaData.java:1) at model.PluginMetaData.setMaxAllowedDownloads(PluginMetaData.java:268) at model.PluginMetaData.setPluginDescriptor(PluginMetaData.java:94) PluginMetaData looks like this (nothing extraordinary, no relationship to other @entities): ... No problem. We will try it tomorrow. Time to sleep for now :-). Thank you for your support. ...

 
issue

again merger missing logs + objectdb exception

we are facing similar problems as we had before, in the log we have a lot of entries merger ... missing + an objectdb exception. Some objects in the system behave strange. This is a part of the log: ... [2017-09-26 12:16:14 #1222 store] SectionClassifier: SectionClassifier{238146996->merger[3309]-missing:1} [2017-09-26 12:16:25 #1223 store] SectionClassifier: SectionClassifier{238146996->merger[3309]-missing:1} ... should we use for recording (we have heavy traffic all the time serving hundreds of clients, so the mode all option could be a problem) ... and copy the database 2 days ago, there was not enough time to do a repair)   ...

 
forum_thread

Missing Data on Retrieval (0, null values)

I try  to export all Objects in an Flatfile-Hiearchy (.csv). But only the first exported Table contains all necessary Data. Most of the others  contains all  Object-Rows', but most Values of the Columns are missing. With a  em.clear() inside the Loop, all tables are exported correctly but the Enity-Keys do not match. I can't get the point - what am i doing wrong?   emf = Persistence.createEntityManagerFactory(dbFile); em = emf.createEntityManager(); ... So i don't have to take my Laptop with me every time. edit ...

 
forum_thread

Error 363 - Failed to read value of inverse relationship

I've got two objects: @Entity public class EEvent { @Id @GeneratedValue(strategy = GenerationType.AUTO) private long id; @ManyToOne(optional=false) private ETown town; public ETown getTown() { return town; } public void setTown(ETown town) { this.town = town; } } And: ... I need to know the answer as soon as possible due to time constraints and submission deadline. The error log is as follows: ...

 
forum_thread

Performance issues on aggregate query

we are using this aggregate query to collect some data: ... results with all the eagerly reachable objects take more time than just executing the query (i.e. when every result object requires ...

 
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explorer NullPointerException

I studied ObjectDB a few hours ago and got some problems when use explorer . I run it and right-click in 'Open local database' window,and the all the pop menu item is gray and disabled,such as ‘new database’,'new directory','cut','copy' ... if I click 'tools---oprions' before open database, the errot I got is: [2012-05-21 09:51:11 #1 explorer] java.lang.NullPointerException at com.objectdb.o.CNC.p(CNC.java:253) at com.objectdb.o.EHL.d(EHL.java:55) at com.objectdb.o.VPN.(VPN.java:60) at com.objectdb.o.OPD.(OPD.java:69) at com.objectdb.o.OPD.(OPD.java:42) ... is normal。 2、what I mean is that: the time when I want to creat a new database,[file>open embedded],right click, ...

 
forum_thread

Possible issue with String fields

Hi I'm brand new to objectdb and I'm trying to create an objectdb from a sample db via jdbc. The code all works and for a few thousand records but when I increase the number of records I get the following " #1 2012-04-18 07:00 Hi I'm brand new to objectdb and I'm trying to create an objectdb from a sample db via jdbc. ...

 
issue

Threaded Test - Failed to commit transaction: Unexpected internal exception

Hi I'm trying to create a simple producer-consumer queue scenario but am getting the followin exception: ... from the "queue" database based on a priority and creation time. The query looks like: SELECT p FROM IdPoint p ORDER ... Apologies for taking up so much of your time! TestMultiLock.java ...