Explanation of the JCA JDBC pool statistics for JBoss EAP

Issue

• What are the meanings of the data-source statistics reported by the CLI statistics read command?
• How are datasource metrics calculated?

[standalone@localhost:9990 /] /subsystem=datasources/data-source=ExampleDS/statistics=pool:read-resource(include-runtime=true)
{
    "outcome" => "success",
    "result" => {
        "ActiveCount" => 1,
        "AvailableCount" => 20,
        "AverageBlockingTime" => 0L,
        "AverageCreationTime" => 110L,
        "AverageGetTime" => 114L,
        "AveragePoolTime" => 0L,
        "AverageUsageTime" => 0L,
        "BlockingFailureCount" => 0,
        "CreatedCount" => 1,
        "DestroyedCount" => 0,
        "IdleCount" => 1,
        "InUseCount" => 0,
        "MaxCreationTime" => 110L,
        "MaxGetTime" => 114L,
        "MaxPoolTime" => 0L,
        "MaxUsageTime" => 0L,
        "MaxUsedCount" => 1,
        "MaxWaitCount" => 0,
        "MaxWaitTime" => 0L,
        "TimedOut" => 0,
        "TotalBlockingTime" => 0L,
        "TotalCreationTime" => 110L,
        "TotalGetTime" => 114L,
        "TotalPoolTime" => 0L,
        "TotalUsageTime" => 0L,
        "WaitCount" => 0,
        "XACommitAverageTime" => 0L,
        "XACommitCount" => 0L,
        "XACommitMaxTime" => 0L,
        "XACommitTotalTime" => 0L,
        "XAEndAverageTime" => 0L,
        "XAEndCount" => 0L,
        "XAEndMaxTime" => 0L,
        "XAEndTotalTime" => 0L,
        "XAForgetAverageTime" => 0L,
        "XAForgetCount" => 0L,
        "XAForgetMaxTime" => 0L,
        "XAForgetTotalTime" => 0L,
        "XAPrepareAverageTime" => 0L,
        "XAPrepareCount" => 0L,
        "XAPrepareMaxTime" => 0L,
        "XAPrepareTotalTime" => 0L,
        "XARecoverAverageTime" => 0L,
        "XARecoverCount" => 0L,
        "XARecoverMaxTime" => 0L,
        "XARecoverTotalTime" => 0L,
        "XARollbackAverageTime" => 0L,
        "XARollbackCount" => 0L,
        "XARollbackMaxTime" => 0L,
        "XARollbackTotalTime" => 0L,
        "XAStartAverageTime" => 0L,
        "XAStartCount" => 0L,
        "XAStartMaxTime" => 0L,
        "XAStartTotalTime" => 0L,
        "statistics-enabled" => true
    }
}

Note that available statistics will vary with JBoss EAP version.