Sun Microsystems Sun GlassFish Enterprise Server 2.1, Руководство администратора

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Lazy Association Connections are lazily associated when an operation is performed on them. Also,
they are disassociated when the transaction is completed and a component
method ends, which helps reuse of the physical connections. Default value is false.
Lazy Connection
Enlistment Enable this option to enlist a resource to the transaction only when it is actually
used in a method.
Associate with Thread Enable this option to associate a connection with the thread such that when the
same thread is in need of a connection, it can reuse the connection already
associated with it, thereby not incurring the overhead of getting a connection from
the pool. Default value is false.
Match Connections Use this option to switch on/off connection matching for the pool. It can be set to
false if the administrator knows that the connections in the pool will always be
homogeneous and hence a connection picked from the pool need not be matched
by the resource adapter. Default value is false.
Max Connection Usage Specify the number of times a connection should be reused by the pool. Once a
connection is reused for the specified number of times, it will be closed. This is
useful, for instance, to avoid statement-leaks. The default value of 0 implies that
this attribute is not enabled.
Click Save for the changes to take effect.
Click Load Defaults if you want to restore the default values of all the settings.
Using the asadmin commands to change connection pool properties.
You can use the
asadmin get
and
set
commands to view and change the values of the
connection pool properties.
To list all the connector connection pools in the server:
asadmin list domain.resources.connector-connection-pool.*
To view the properties of the connector connection pool, you can use the following command:
asadmin get domain.resources.connector-connection-pool. conectionpoolname .*
To set a property of the connector connection pool, you can use the following command:
asadmin set
domain.resources.connector-connection-pool.
conectionpoolname .validate-atmost-once-period-in-seconds=3
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More Information
Managing Connector Connection Pools
Sun GlassFish Enterprise Server 2.1 Administration Guide • December 2008 86