jmx-console观察连接池

 
  jboss连接池配置如下：        <connection-url>jdbc:sqlserver://192.168.1.253:1433;selectMethod=cursor;DatabaseName=YY</connection-url>
            <driver-class>com.microsoft.sqlserver.jdbc.SQLServerDriver</driver-class>
          <user-name>sa</user-name>
         <password>12345</password>
         <prepared-statement-cache-size>50</prepared-statement-cache-size>
         <min-pool-size>30</min-pool-size>
         <max-pool-size>50</max-pool-size>
         <idle-timeout-minutes>5</idle-timeout-minutes>
         <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
         <blocking-timeout-millis>60000</blocking-timeout-millis> 通过jmx-console观察一上午，得到连接池的记录情况，如下AvailableConnectionCount    : 788
BlockingTimeoutMillis       : 30000
ConnectionCount             : 30
ConnectionCreatedCount      : 2778
ConnectionDestroyedCount    : 2748
IdleTimeoutMinutes          : 5
InUseConnectionCount        : 12
MaxConnectionsInUseCount    : 25
MaxSize                     : 800
MinSize                     : 30通过观察发现：每5分钟会destory 30个连接,create 30个连接,所以导致ConnectionCreatedCount 和ConnectionDestroyedCount 一直是往上增，请问这样正常吗？