Answer Posted / vamsi.t

When we install spring s/w there is built-in supplied
connection pool in spring container.
Built-in connection pooling mechanism is implemented
using the appropriate classes like DriverManagerDataSource
and SingleConnectionDataSource,but these are dummy
connection pools,it can not be used in real time
applications.
There are Third party supplied connection pools like
C3P0,Apache DBCP(DataBaseConnectionPool).Spring s/w
supports these third party supplied connection pools.

There are server supplied connection pools like
weblogic server supplied connection pooling and appilcation
server supplied connection pooling.

we can define a connection factory instance that provides
the entry point for interacting with the JMS(JavaMessaging
Service). It can be used to interact with the ActiveMQ
Message Broker for creating a connection, through which a
session can be established for sending and receiving
messages


Here i have written as par as my knowledge is concerned.If
iam wrong let me know.

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