What is difference between connection pool and DataSource?

Applications access a data source using a connection, and a DataSource object can be thought of as a factory for connections to the particular data source that the DataSource instance represents. When an application closes a connection that is pooled, the connection is returned to a pool of reusable connections.

What is the difference between DataSource and XA DataSource?

An XA datasource is used instead of the datasource if the target Jboss application: Uses the Java Transaction API (JTA) Includes multiple database updates within a single transaction. Accesses multiple resources, such as a database and the Java Messaging Service (JMS), during a transaction.

What is a XA connection?

Interface XAConnection An object that provides support for distributed transactions. An XAConnection object may be enlisted in a distributed transaction by means of an XAResource object. A transaction manager, usually part of a middle tier server, manages an XAConnection object through the XAResource object.

What is javax SQL XADataSource?

public interface XADataSource extends CommonDataSource. A factory for XAConnection objects that is used internally. An object that implements the XADataSource interface is typically registered with a naming service that uses the Java Naming and Directory Interface™ (JNDI).

What is a connection pool in database?

A connection pool is a cache of database connection objects. The objects represent physical database connections that can be used by an application to connect to a database. At run time, the application requests a connection from the pool.

What is difference between XA and non-XA datasource?

A non-XA transaction always involves just one resource. An XA transaction involves a coordinating transaction manager, with one or more databases (or other resources, like JMS) all involved in a single global transaction.

What is XA transaction Java?

XA is a two-phase commit protocol that is natively supported by many databases and transaction monitors. It ensures data integrity by coordinating single transactions accessing multiple relational databases. The Resource Manager manages a particular resource such as a database or a JMS system.

How do I enable XA transactions?

Procedure

Select Control Panel > Administrative Tools > Component Services.
Select Component Services > Computers and right-click My Computer, and select Properties.
Click the MSDTC tab, and then click Security Configuration.
Select the Enable XA Transactions check box, and then click OK.

How do I enable XA in DTC?

Right-click Local DTC and then select Properties. Click the Security tab on the Local DTC Properties dialog box. Select the Enable XA Transactions check box, and then click OK.

Why do we use connection pool?

Using connection pools helps to both alleviate connection management overhead and decrease development tasks for data access. Each time an application attempts to access a backend store (such as a database), it requires resources to create, maintain, and release a connection to that datastore.

What is a SQL connection pool?

A connection pool is a set of idle, open, and reusable database connections maintained by the database server so that the connections can be reused when the database receives future requests for data, instead of exclusively opening a new connection.

What’s the difference between xa and DataSource?

XA Data Source– its a data source where applications requires double phase commit transaction. connection pool data source– where applications require single phase commit transactions. Also know, what is the difference between DataSource and connection pool?

What is the difference between xa and non Xa in WebLogic?

An application uses the connection object in the same way that it uses a connection. Similarly, what is XA and non Xa in Weblogic? An XA transaction is a “global transaction” that may span multiple resources. A non-XA transaction always involves just one resource.

What’s the difference between a non-Xa and XA transaction?

When to use connection pooling with database drivers?

It depend’s on your application, many database drivers take a long time to create a new connection with database, If your application is going to create too many connection’s ( very frequently ). use connection pooling. Thanks for contributing an answer to Stack Overflow!