Answer Posted / suraj kumar

Connection pooling is conceptually similar to any other form
of object pooling. Database connections are often expensive to
create because of the overhead of establishing a network
connection and initializing a database connection session. In
turn, connection session initialization often requires time
consuming processing to perform user authentication, establish
transactional contexts and establish other aspects of the
session that are required for subsequent database usage.
Hence, sharing of connection object helps to both alleviate
connection management overhead and decrease development tasks
for data access. The sharing and storing mechanism of
connection object is known as connection pooling.

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