New JDBC Connection Pool: Add Connection Pool Optional Settings

See Also

This page of the New File wizard for defining a JDBC connection pool allows you to modify the default values for pool settings, transaction isolation, and connection validation. It is best to leave these settings at their default values and modify them later in the connection pool properties window.

The following settings can be modified in this screen:

Pool Settings

A set of physical database connections reside in the pool. When an application requests a connection, the connection is removed from the pool, and when the application releases the connection, it is returned to the pool.

Transaction Isolation

Because a database is usually accessed by many users concurrently, one transaction might update data while another attempts to read the same data. The isolation level of a transaction defines the degree to which the data being updated is visible to other transactions. For details on isolation levels, refer to the documentation of the database vendor.

Connection Validation

The application server can validate connections before they are passed to applications. Validation allows the application server to automatically re-establish database connections if the database becomes unavailable due to network failure or database server crash. Validation of connections incurs additional overhead and slightly reduces performance.

See Also
Defining a Connection Pool
Choose Database Connection
Add Connection Pool Properties

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