正在填写wildfly数据库池

Question

我在wildfly 8.2.1上运行了一些应用程序，并且每天都在填充数据库池

<xa-datasource jndi-name="java:jboss/datasources/etenderDS" pool-name="etenderDS" use-ccm="true">
  <xa-datasource-property name="ServerName">
    host
  </xa-datasource-property>
  <xa-datasource-property name="PortNumber">
    5432
  </xa-datasource-property>
  <xa-datasource-property name="DatabaseName">
    dbname
  </xa-datasource-property>
  <driver>postgresql</driver>
  <xa-pool>
    <min-pool-size>10</min-pool-size>
    <max-pool-size>2000</max-pool-size>
    <capacity>
      <decrementer class-name="org.jboss.jca.core.connectionmanager.pool.capacity.MinPoolSizeDecrementer"/>
    </capacity>
    <prefill>false</prefill>
    <use-strict-min>false</use-strict-min>
    <flush-strategy>Gracefully</flush-strategy>
  </xa-pool>
  <security>
    <user-name>username</user-name>
    <password>password</password>
  </security>
  <recovery>
    <recover-plugin class-name="org.jboss.jca.core.recovery.ValidatingManagedConnectionFactoryRecoveryPlugin"/>
  </recovery>
  <validation>
    <valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLValidConnectionChecker"/>
    <background-validation>true</background-validation>
    <exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.postgres.PostgreSQLExceptionSorter"/>
  </validation>
  <timeout>
    <idle-timeout-minutes>15</idle-timeout-minutes>
  </timeout>
</xa-datasource>

我的问题：这是正常的吗？为什么wildfly需要很多泳池？我怎样才能减少野生蝇池？