ObjectDB Database Search

A connection to a database is represented by an EntityManager instance, which also provides methods for performing database operations. Many applications require multiple database connections ... connection by using a separate EntityManager instance for each HTTP request. The main role

In JPA, a database connection is represented by the EntityManager interface ... . createEntityManager (); The EntityManager instance represents a connection to the database ... , application-wide EntityManagerFactory . When the connection to the database is no longer needed

The server does not appear to release broken connections . My typical development pattern ... logs: [odb:server:fatal] com.objectdb.o.UserException: Too many open connections (100) at com.objectdb ... setting that would tell the server to close connections after a period of inactivity. Also, how does

configuration file contains the following element: The element The element specifies how clients can connect ... connections . The default port is 6136 . If you use a different port, clients must also specify it in the connection URL string, as explained in the JPA Overview section. The max attribute specifies

after editing the file to set the paths to objectdb.jar and the JVM. Connecting to the database Opening a database connection To open a local database file in embedded mode, use the File Open Embedded... command and select the file. To open a database in client-server mode, select File Open C/S Connection

how do you handle connection pooling?  I don't understand how to open and close connection ... ; The element specifies how clients can connect to the server:     The port attribute specifies a TPC port on which the server is listening for new connections . Usually the default port 6136

down and database lost connection with the JBOSS AS, several restarts got it up and running finally.  It seems when the database loses network connection it shutdowns but we cant be sure. Usualy database stops once a day with no apperent reason. Second cause we suspect is the number of network connections

Upon initializing our ObjectDB database on a node that does not have a connection to the outside ... .UnknownHostException: java.sun.com at java.net.PlainSocketImpl. connect (Unknown Source) at java.net.SocksSocketImpl. connect (Unknown Source) at java.net.Socket. connect (Unknown Source) at java.net.Socket. connect

with multiple foreign keys. Indeed, it returns the following error: Failed to connect to server 35.181.88.206:6136 ( connect timed out) (error 522) at com.objectdb.jpa.EMF.createEntityManager(EMF.java:152 ... .main(RemoteTestRunner.java:206) Caused by: com.objectdb.o.UserException: Failed to connect to server 35

I am having trouble setting up the birt points.odb sample with a client/server connection . I can connect to points.odb with the explorer.  I added a "Data Source" that works fine with local file.  The connection using the server url fails the ping test.  I get (Failed to connect

.mydomain.com 6136 (worked fine, is able to connect ...) My db was configured below: On my application ... With all these configuration, I am still not able to connect on remote server. I am pretty sure that defaultObjectDBPersistenceUnit was used on my app. Also, if my app was able to connect

Hello, i am trying to set up the SSL for connections to objectDB server. I cannot connect the Client, when SSL is enabled. I can connect from Explorer, when "Use SSL" is checked, isn't there some ... .objectdb.o.CST.o(CST.java:150) thamal Tomas Hamal I can connect from Explorer, when "Use SSL" is checked

after an undetermined period. Caused by: com.objectdb.o.UserException: Connection is closed at com ... out of connections ? Or is there something obvious that I am not seeing? I am using objectdb-2.2.6_03   ... what is written there... com.objectdb.o.UserException: Too many open connections (100) at com.objectdb.o

sure about the connection url for the code, and for the explorer. I tried this: Transactor.emf ... .odb created under db-files/ nor can I connect to it from explorer. So, how does one set up odb as a server, and how does one connect to it from code, and from explorer? dmoshal David Moshal

Hi! Does ObjectDB keeps and reuses a pool of connections as MySQL JDBC driver does? I mean ... . Every EntityManagerFactory instance manages a pool of connections and reuses them when it creates new EntityManager instances. By default the maximum connection pool size is 50. You can change it in

. Exception in thread "main" [ObjectDB 2.2.7_08] javax.persistence.PersistenceException Connection is closed ... .java:308) Caused by: com.objectdb.o.UserException: Connection is closed at com.objectdb.o.MSG.d(MSG ... .PersistenceException Connection is closed (error 526) at com.objectdb.jpa.JpaQuery.getResultList(JpaQuery

I've got a master/slave cluster set up with just a master and a slave.  I can connect to the master with a client app no problem.  My slave can connect to the master and replicate no problem.  But when I use a client app to connect to the slave like this: objectdb://slaveserverurl

It is easy to change the properties in persistence.xml file to connect to an ObjectDB server ... the client-server connection url with an embedded connection url, e.g. an absolute file path. See this documentation section regarding client-server and embedded connection urls. support Support

.objectdb.o._JdoUserException: Failed to validate xml file \RTDLogger.jar#package.jdo: Connection timed out: connect NestedThrowables: java.net.ConnectException: Connection timed out: connect The same

Hello, We bought a license, but the server is not connected to the Internet ... require an Internet connection . The output of the activation console application is a url that you can open on another computer that is connected to the Internet, in order to retrieve the activation code

My questions is about : 1-) Can objectdb server handle 200.000+ connections at the same time concurrently ? Does it have queue and cache ? 2-) is it dangerous to use that system on many online users ... connections , but they are limited by practical factors such as thread numbers (depending on your operating

lifecycle, database connections , and transactional contexts within your application. The following diagram ... Lifecycle Management Manage database connections and entity lifecycles with these interfaces ... -detection mode. Direct JDBC Connection Access The following functional interfaces are part of the JPA

that it is connected to the intended server and not an imposter, which prevents a man-in-the-middle attack. Conversely, the server might allow connections from any client that provides a valid username ... must also authenticate the client. Connecting using SSL Connecting to an SSL-enabled ObjectDB server

. Up to 9,223,372,036,854,775,808 entities per database file. Unlimited database connections ... products . Connection Pooling Automatic connection pool managed by EntityManagerFactory. Configurable - minimum/maximum connections and timeout. Caching L1 entity cache (per EntityManager). L2 shared

when the user connects to the server. The optional ip attribute, if specified, allows the user to connect to the server only from the specified IP addresses. For example, "127.0.0.1" (the local computer ... of "192.18.0.0-192.18.194.255,127.0.0.1" allows connections from any IP address in the range 192.18.0.0

and password attributes. The slave server uses these credentials to connect to the master server ... server. Connecting to the database cluster The configuration example shows a master database managed ... this example. However, if the first URL becomes unavailable, the connection automatically and temporarily

transfer Your personal information in connection with, or during negotiations of, any merger, sale ... connection with the Service Protect the personal safety of Users of the Service or the public

that represents a local or remote connection to the database: em.createQuery("objectdb backup ... . If you specify the target argument as a java.io.File instance in a client-server connection , the backup

StoredProcedureQuery EntityManagerFactory Since: Jakarta Persistence (JPA) 1.0 The Database Connection using JPA ... ( ConnectionFunction function ) Call the given function and return its result using the database connection underlying this EntityManager . Usually, the connection is a JDBC connection , but a provider might support

tests. The content of these temporary databases is deleted when you use the drop URL connection

. Up to 9,223,372,036,854,775,808 entities per database file. Unlimited database connections (limited by operating system resources).

Contributor in connection with its distribution of the Program in a commercial product offering

connection URL. This can be an embedded URL (for example, c:\points.odb ) or a client-server URL

method (preferred over JUnit). Use embedded mode to connect to the ObjectDB database directly

connections is also specified in the server configuration , but you can override it with a command-line

: - the connection type, usually java.sql. Connection An executable action which makes use of a native database connection . The connection is usually a JDBC connection . See Also: ConnectionFunction ... Methods void accept ( C connection ) Execute the action using the given connection . Parameters: connection

: - the connection type, usually java.sql. Connection A function which makes use of a native database connection to compute a result. The connection is usually a JDBC connection . See Also: ConnectionConsumer ... Instance Methods T apply ( C connection ) Compute a result using the given connection . Parameters

(    ConnectionConsumer action ) Type Parameters: - the connection type, usually java.sql. Connection Execute the given action using the database connection underlying this EntityManager . Usually, the connection is a JDBC connection , but a provider might support some other native connection

- the connection type, usually java.sql. Connection Call the given function and return its result using the database connection underlying this EntityManager . Usually, the connection is a JDBC connection , but a provider might support some other native connection type, and is not required to support

._PersistenceException: Connection is closed due to UserException: Connection is closed com.objectdb.o ... and just writing the condition to a log file, because if the database connection is closed, further attempts to close it are not necessary. support Support

a connection to the ObjectDB server. It happens on every start of the Context. If it fails ... restart tomcat. Other JPA providers are able to fetch the Metamodel without connecting to the DB. I ... getMetmodel works. If invoked before first connection to the server - the persistence unit model is analyzed locally on the client side. support Support

Connections to the database are represented in BIRT as data sources. To create an ObjectDB data ... the database connection url: Download and save the points.odb  database file (from the Quick Start tutorial ). Specify an ObjectDB connection url - either embedded (e.g. c:\points.odb ) or client

, IOException { // Obtain a database connection : EntityManagerFactory emf = (EntityManagerFactory ... , response); } finally { // Close the database connection : if (em.getTransaction().isActive()) em ... connection ) is constructed. If a new guest has registered (using a JSP form that is shown in

, HttpServletResponse response) throws ServletException, IOException { // Obtain a database connection ... .getRequestDispatcher("/guest.jsp") .forward(request, response); } finally { // Close the database connection ... , and then an EntityManager (representing a database connection ) is constructed. If a new guest has registered

{ // Injected database connection : @PersistenceContext private EntityManager em; // Stores a new guest

connection : @PersistenceContext private EntityManager em; // Stores a new guest: @Transactional public

(String[] args) { // Open a database connection // (create a new database if it doesn't exist

a database connection // (create a new database if it doesn't exist yet): EntityManagerFactory emf

connection : @PersistenceContext private EntityManager em; // Stores a new guest: @Transactional public

; @Stateless public class GuestDao { // Injected database connection : @PersistenceContext private