Sun Microsystems GlassFish Enterprise Server 2.1 Administration Manual page 84

Managing Connector Connection Pools
On Any Failure
Transaction Support
Connection Validation
Click Save.
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Click Load Defaults if you want to restore the default values of all the settings.
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84 Sun GlassFish Enterprise Server 2.1 Administration Guide • December 2008
If you select the checkbox labelled Close All
Connections, if a single connection fails, then the
application server will close all connections in the
pool and then reestablish them. If you do not select
the checkbox, then individual connections will be
reestablished only when they are used.
Use the Transaction Support list to select the type of
transaction support for the connection pool. The
chosen transaction support overrides the transaction
support attribute in the resource adapter associated
with this connection pool in a downward compatible
way. In other words, it can support a lower transaction
level than that specified in the resource adapter or the
same transaction level as that specified in resource
adapter, but it cannot specify a higher level. The
transaction support options include the following.
The None selection from the Transaction Support
menu indicates that the resource adapter does not
support resource manager local or JTA transactions
and does not implement XAResource or
LocalTransaction interfaces. For JAXR resource
adapters, you need to choose None from the
Transaction Support menu. JAXR resource adapters
do not support local or JTA transactions. Local
transaction support means that the resource adapter
supports local transactions by implementing the
LocalTransaction interface. Local transactions are
managed internal to a resource manager and involve
no external transaction managers. XA transaction
support means that the resource adapter supports
resource manager local and JTA transactions by
implementing the LocalTransaction and
XAResourceinterfaces. XA transactions are controlled
and coordinated by a transaction manager external to
a resource manager. Local transactions are managed
internal to a resource manager and involve no
external transaction managers.
Select the Required checkbox to enable connection
validation.