ObjectDB Database Search

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Difference performance in ObjectDB Explorer and in java project

other useful hints for object db? Performance is better, but still not the same 1000 ms in ... hints . If your classes are not enhanced then try enhancing them. support Support Appreciate your help Konstantin Konstantin

Memory error during commit, if @ElementCollection field contains many elements

content still requires memory space. Lazy setting in JPA is considered as a hint to the implementation, but the implementation can still load content eagerly. ObjectDB follows the lazy setting hint

Failed to write the value of field using reflection (error 363) on LAZY fetch

(e.g. a Modell has several Artikels) . When I remove the LAZY hint (query.setHint("objectdb.result ... hints ? The Mapping of class Modell and its member: @Entity class Modell { ... @OneToMany(fetch

like operator (String)

isn't a problem. The GUI related methods will add implicit a '%' character. Additional hint : 

Level 2 cache not hit in @ManyToOne

without performance penalty. You can change this behavior by setting the  "objectdb.result-fetch" query hint

Set timeout for BatchQueryItr

( unknown source ) xirt Sylvain You can set a query execution timeout as a query hint . The many

Installing a VM security fix leads to inactive DB

. It is really tiresome. As we bought the license years ago there was hinted at a automatic

Performance in SELECT statement

would be very happy if someone could give me a hint why this query tooks so long. edit: I just tried to remove

Performance issue in a query due to compareTo calls

Hello, we have a question again regarding query performance. The query: SELECT v FROM Values v WHERE v.step.stepNumber = ? is very slow in comparing to the query: SELECT v FROM Values v WHERE v.stepNumber = ? Can you explain why the first query needs so much time or do you have a hint

Change Sequcene Id

(...) method is different ( hint to improve efficiency by pre-allocating ids). But you may define a new

OutOfMemory in Server

came. Can You give some hint , why this OOM happens? jakab Gergely Jakab The memory allocation

Web Framework Recommendation for leveraging JPA + ObjectDB

+ ObjectDB" couple successfully in conjunction with a contemporary Web Framework ? Any hints

Entity can be found by find() but not by query

it then this could be very helpful in understanding this situation. support Support It seems that the hint

Apache Tomee 1.5.2: Failed to use JTA (TransactionManager is not found)

:126) ... 28 more Any hints please? Thanks a lot in advance. zmirc Mircea Chirac It seems as

Problems with Tutorials » JPA Web App (Tomcat) » NetBeans JPA Web App

hint as to where the build is failing. Regards, Erick erick.rosas Erick

ODB with Netbeans

a NetBeans forum. I didn't find these errors in Tools Options Editor Hints Java. However, please notice

LAZY @ManyToOne field functions as EAGER

(unlike EAGER ) is merely a hint . For example, ObjectDB always loads simple value fields eagerly (e.g

@Lob @Basic(fetch = FetchType.LAZY) is loaded when it's not needed

Vlad Myachikov FetchType.LAZY is a hint that JPA implementations are allowed to ignore. Currently

Query performance in general

the alternative is manual analysis of possible query plans and using hints to select a better query plan. support Support

Dependency from enhanced classes to the objectDB library

example? Then we may be able to solve the persistence unit not found exception using the hint at #2

Performance tuning, best practices

? - should we change some settings in the configuration ? - other hints or proposals  hgzwicker Hans-Georg

Out of memory

;on the server side. Maybe changing some queries, setting indexes or using the objectdb.result-fetch hint

Database Inconsistency or corruption

someone already faced a similar problem ? Any hint is welcome ?           junior

Access entity version before commit transaction

since it returns 3 here         }); Hint : transactional.execute

Deleting archive log folder causes exception

. The only way to get system working is to delete the archive file. Can you provide us some hint

Negative snapshot user count exception

a link in a private support ticket) we can try getting some hint . support Support On our Dev server

ODB-FileWriter holds unecessary entity reference after transaction and entity manager are closed

Support Thank you very much for your hint . If we enhance all entities then it works. btc_es BTC

@FetchGroup in JPA similar to JDO

as a hint that this query should return Entities with only those fields filled with data: TypedQuery

Tracking changes to new collections (in enhancement mode) after flush

A further hint is also that the affected list in the map is still a java.util.ArrayList, not an objectdb

Unexpected not reproducable exception during commit

, unfortunately we cannot reproduce this issue. Thank you for the hints . best regards BTC btc_es BTC

Internal objectdb exception when using different language on a machine

.JpaQuery.getResultList(JpaQuery.java:721) btc_es BTC EmbeddedSystems Hello, a hint

performance issues, database after adding statistics, after doctor

search values. As a temporary workaround you can use a query hint to request using

ObjectDB 2.8.4

). Added support for a new query hint for setting a preferred variable processing order ( issue #2379 )

Removed entities can be found by query in the same transaction

a complex scenario. Maybe you have a hint how we can better analyze the issue or do you have an idea

Once served to JSF page via @EJB query bean, many list fields are null (but same query ok after fresh persist in @PostConstruct)

(even though it is allowed by JPA - lazy is only a hint ),  allocating IDs during persist

InternalException when using MEMBER OF on a large list in a query

they seem to be 36 bytes). support Support Thanks for the fix. Also thanks for the hint with long keys

References to objects of missing obsolete entity classes

not occur with objectDB version 2.8.0_4. Did you change anything and do you have any hint as

Enable intern() for Retrieved Strings

Implement a setting, where the developer can specify which Strings should be loaded via the String.intern() function. Hint for this enhancement: When loading a large list of persons, the persons first names are many time the same ones (here it is Martin, Michael, Thomas, ...). Instead

Error during closing an entity manager

Support I have a further hint . We have found a workaround for Issue #306 and this workaround prevents

NullPointer when accessing entity field

. Could you provide us some hint what is the cause of this problem? Thanks Marta   Maruta M Sedlakova The cause

NullPointerException: Cannot invoke "com.objectdb.o.RFV.S()" because "" is null

Support Thanks for the hint with the query. I used the correct query in the code