MySQL休眠读取超时

Question

我特别使用 hibernate.c3p0 和属性 idle_test_period ， preferredTestQuery 和 timeout 来解决问题会话已关闭！！但是现在，我遇到了读取超时的问题，当我执行Web服务时，未返回响应。在的配置下> hibernate.cfg.xml 和配置mysql 数据库

List<string> mainList = new List<string>(new string[]
{
    "bool",
    "byte",
    "char",
    "decimal",
    "double",
    "float",
    "int",
    "long",
    "sbyte",
    "short",
    "uint",
    "ulong",
    "ushort"
});
foreach (string item in mainList)
{
    Console.WriteLine("Size of {0} : {1}", item, sizeof(ITEM_STRING_TO_TYPE));
    // like this
    Console.WriteLine("Size of int: {0}", sizeof(int));
}

我的数据库配置超时：

<session-factory>
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
    <property name="hibernate.connection.url">jdbc:mysql://xxxxxx:xx/xx</property>
    <property name="hibernate.connection.username">xxx</property>
    <property name="hibernate.connection.password">xxx</property>
    <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
    <property name="show_sql">true</property>

     <property name="use_sql_comments">true</property>
     <property name="hibernate.c3p0.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>                
    <property name="hibernate.c3p0.acquire_increment">1</property> 
    <property name="hibernate.c3p0.idle_test_period">60</property>
    <property name="hibernate.c3p0.max_size">50</property> 
    <property name="hibernate.c3p0.max_statements">100</property>           
    <property name="hibernate.c3p0.min_size">5</property> 
    <property name="hibernate.c3p0.timeout">1800</property>
    <property name="hibernate.c3p0.preferredTestQuery">select 1;</property>