Oracle Connection Pool Explained

In Oracle database, the connection pool is a mechanism used to manage the database connections. It allows applications to obtain a database connection from a pre-created connection pool when needed, instead of creating a new one each time. This can improve the performance and efficiency of the application, while reducing the workload on the database server.

The connection pool will pre-create a certain number of database connections and maintain their status. When the application needs to access the database, it can obtain an idle database connection from the pool, and after use, return the connection to the pool instead of closing it. This can reduce the process of creating and destroying connections, improving the efficiency of database access.

The connection pool can also control the number and lifespan of connections, avoiding issues such as high database server load or connection leaks caused by too many connections from the application. By configuring the connection pool, parameters such as the maximum number of connections, minimum number of connections, and idle connection retention time can be set to better manage the use of database connections.