GlassFish Server uses a tree structure to track monitorable objects. Within that tree, the following view is not available to obtain connection pool statistics:
server.connector-service.resource-adapter-name.connection-pool-name.* or server.jms-service.connection-factories.connection-factory-name.* (for jms-ra-related pools).
For more information, see Issue report 11256.
Use the server.resources.* view to obtain the statistics.
For more information about Monitoring, see Chapter 8, Administering the Monitoring Service, in Oracle GlassFish Server 3.0.1 Administration Guide.