Date Created: Thu 10-Mar-2011

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In the Administrative Console click Resources > JDBC Providers > JDBC_provider > Data Sources > data_source > Connection Pool. The path for JMS queue connection factories is: Resources > JMS Providers > Default Messaging > JMS Queue Connection Factory > JMS_queue_connection_factory > Connection Pool Properties.

Minimum Connections

Specifies the minimum number of physical connections to maintain.
If the size of the connection pool is at or below the minimum connection pool size, the Unused Timeout thread does not discard physical connections. However, the pool does not create connections solely to ensure that the minimum connection pool size is maintained. Also, if you set a value for Aged Timeout, connections with an expired age are discarded, regardless of the minimum pool size setting.
For example, if the Minimum Connections value is set to 3, and one physical connection is created, the Unused Timeout thread does not discard that connection. By the same token, the thread does not automatically create two additional physical connections to reach the Minimum Connections setting.
Data type Integer, Default 1, Range 0 to max int

This JDBC connection pool setting will be influence by other connection pool settings. You need to spend time testing in a test environment to understand the effect of all combination of settings.

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