Jdbc JBoss池的IdleCount值为负值

有时，在检查JBoss 7.1连接池状态（JDBC）时，我会看到IdleCount的值为负值，如下面的示例所示，其中“IdleCount”=>-7

有人能给我解释一下这个负值的含义吗

"pool" => {
"ActiveCount" => 13,
"AvailableCount" => 230,
"AverageBlockingTime" => 1L,
"AverageCreationTime" => 76L,
"AverageGetTime" => 2L,
"AveragePoolTime" => 306L,
"AverageUsageTime" => 241L,
"BlockingFailureCount" => 0,
"CreatedCount" => 13,
"DestroyedCount" => 0,
"IdleCount" => -7,
"InUseCount" => 20,

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IdleCount是使用ActiveCout-InUseCount计算的

e、 g.IdleCount=ActiveCount-InUseCount=>13-20=-7

这就是为什么它在池统计中显示-7

参考