ObjectDB Database Search

am writing to seek your urgent assistance regarding performance issues we are facing after migrating ... performance . Server and Configuration Details: Server : The VM is running on Ubuntu 20.04 with 70GB ... the usage of resources like RAM and CPUs. We have taken several steps to improve performance

Hello, we have a question again regarding query performance . The query: SELECT v FROM Values v ... ; @OneToOne (fetch = FetchType.EAGER) private TCStep step; //For performance reasons, we use a list ... are always slower because multiple entities are involved. You can improve the performance of queries by using

Hi ObjectDB team, we are currently investigating performance issues that affect some ... and the documentation says, that should be fine for most applications. Are there scenarios you know of, that perform ... . The order of the expressions in a query should not affect performance . ObjectDB checks different orders

embedded mode based on the console tutorial, there seems to be a bit of a performance gap running ... to perform comparably. I've tried running this on a brand new machine as well as my main dev machine ... differences in performance so looking for some advice to see if there is something I have missed or

; Now the question is: - how can we tune for performance ? - do we need more processors ... if the performance issue is due to load of several concurrent clients, or maybe same slow performance ... - the best way to improve performance is to explore that query, rephrase it if possible and/or define additional indexes. support Support

the performance . But we don't see any performance improvements. Is there any possibility to improve the query performance with parallel threads? We use the ObjectDB as an embedded database ... are fine. A parallel query execution doesn't necessarily improve performance , if the serial execution

Care Centres across Sri Lanka. We've recently migrated to ObjectDB to improve performance . Despite the migration, we're experiencing general performance issues across all transactions. As requested in ... ObjectDB. You can achieve much better performance by applying minor modifications to the object model

Hi, we have a strange performance problem with ObjectDB 2.5.3_01 and JBoss 7.1.1 ... separate test environment its speed is very good. We did a performance analysis on our 2 linux ... . We pinpointed that from he 53 record performances degrades significantly. On other queries threshold

can improve performance by reducing file fragmentation that can result from frequent resize operations ... , the recovery file can be used to repair it. ObjectDB automatically performs recovery when it opens ... file on separate storage devices, such as different disks, can improve performance . The max attribute

of, publicly display, publicly perform , distribute and sublicense the Contribution of such Contributor ... . That Contributor is then a Commercial Contributor. If that Commercial Contributor then makes performance claims, or offers warranties related to Product X, those performance claims and warranties

policy, however, affects performance . Eager retrieval can minimize round trips to the database and improve performance , but retrieving unnecessary entities that are not in use decreases performance

performance . Reducing Development Time and Costs ObjectDB makes database programming easier and faster ... to shorter time to market and saving in the total development time and costs. Improving Performance ... driver. Obviously, elimination of conversions, translations and other intermediate operations leads to better performance .

  Boost your application database performance . Database performance is critical as it is the bottleneck in most applications. ObjectDB is extremely fast and much faster than any other JPA ... and eliminates the ORM layer. The result is better performance and faster applications, especially

performance and can sometimes reduce the amount of Java code needed. Note that query results ... results might affect performance , depending on the size of the query result list and other factors. SELECT

); Flushing changes to the database before every query execution can significantly affect performance . Therefore, you should consider this issue when performance is important. Lock mode (setLockMode

of the Company, to perform services related to the Service or to assist the Company in analyzing ... . For the performance of a contract , including the development, compliance and undertaking

Core Jakarta Persistence (JPA) types provide the foundation for bootstrapping the persistence engine and performing CRUD operations in ObjectDB. These interfaces and classes manage the entity ... ) and close it upon shutdown. The primary interface for performing CRUD operations, building queries

As noted above, using ObjectDB instead of a relational database and ORM combination is easier and leads to better performance . ORM tools, however, are very useful where the use ... performance and use a JPA ORM provider (Hibernate, TopLink, EclipseLink or DataNucleus) to access relational

for performing database operations. Many applications require multiple database connections ... the database (such as storing, updating, or deleting data) must be performed within an active transaction

using reflection, which can affect performance . The possible values of the reflection attribute ... their persistent content lazily when they are accessed can improve performance . However, for some applications

) that are performed on all the objects or object tuples in the group. Aggregate calculations ... WHERE 'Europe' MEMBER OF c.continents GROUP BY c.currency Because this query performs grouping on a path

for both, such the variable type. An enumeration defining the type of join to perform : INNER (default) or LEFT . JOIN FETCH virtual variables Fetch joins optimize performance by pre-fetching specified related data 

ObjectDB Software develops, markets and supports the ObjectDB Object-Oriented Database Management System (ODBMS). ObjectDB Software is the market leader in providing a very high performance ... . When database performance matters - ObjectDB Software provides the most effective solution. ObjectDB

Works of, publicly display, publicly perform , sublicense, and distribute the Work and such Derivative

, using property access can have performance benefits. This isn't the case with ObjectDB

performance problems. For example, consider the following query execution and result iteration

to perform optimistic locking checks. Enum mapping Configure how Java enumerated types are persisted and used

matches the field order in the WHERE clause, ObjectDB can perform a more efficient range scan

Jakarta Persistence (JPA) Entity Graphs optimize query performance by specifying which attributes should be loaded eagerly. Graph definitions Use the following interfaces to define the hierarchy and scope of your fetch plans: The root interface for defining a fetch plan. An EntityGraph serves

The ObjectDB Enhancer is a post-compilation tool that improves performance by modifying the bytecode of compiled classes. Enhancement applies mainly to user-defined persistable classes ( entity classes , embeddable classes , and mapped superclasses ) and is usually optional

performs the filtering during the FROM iteration. In the previous population query, if an index

that modify database content, such as storing, updating, and deleting entities, must be performed

Named entity graphs provide a static mechanism for defining fetch plans using annotations on entity classes. These graphs optimize database performance by specifying which attributes and relationships should be loaded eagerly, overriding default lazy loading behavior. Graph Definitions Define

progress - see issue tracking (requires login). Performance and Speed ObjectDB is extremely fast

(relative to a retrieval followed by a separate lock), these methods perform retrieval and locking as

This chapter demonstrates basic ObjectDB and JPA concepts by introducing a simple example program. After reading this chapter, you will be able to write basic programs that create, open, and close ObjectDB databases and perform basic CRUD (Create, Retrieve, Update, and Delete) operations

. For example, you can increase the maximum JVM heap size and improve performance by using the HotSpot JVM

can significantly improve query performance : @Entity public class Event { @EmbeddedId EventId id

the persistence context or refreshed. This is useful for initializing transient fields or performing post

to perform operations that affect the state of the persistence context, or that modify the lifecycle state ... , the persistence provider must perform optimistic version checks when obtaining the database lock ... mode type is pessimistic and the entity has a version attribute, the persistence provider must perform

); } } GuestServlet performs the following operations on every http request: The EntityManagerFactory

The Guest entities will be stored in an ObjectDB database, which will be represented by a JPA's EntityManagerFactory instance with a global application scope. We have to register a ServletContextListener to perform initialization and cleanup operations: The database will be opened (or created

Operations on the database will be performed by an instance of a session bean (EJB) class that we will define in this step: Open the [New Session Bean] dialog box by right clicking the guest package node (in the [Projects] window), selecting New Other... Java EE (or Enterprise JavaBeans) Session

Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Projects] window under Source Packages) and selecting New

Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting  New Class

(request, response); } } GuestServlet performs the following operations on every http request

The Guest entities will be stored in an ObjectDB database, which will be represented by a JPA's EntityManagerFactory instance with a global application scope. We have to register a ServletContextListener to perform initialization and cleanup operations: The database will be opened (or created

Operations on the database will be performed by an instance of a session bean (EJB) class that we will define in this step: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting New Class . The package name should be guest

Guest(name)); // Display the list of guests: doGet(request, response); } } GuestServlet performs

, IOException { doGet(request, response); } } GuestServlet performs the following operations