设置连接池

 <connectionStrings>
    <add name="adchina" connectionString="Data Source=adchina;Persist Security Info=True;User ID=adchina_user;Password=adchinadb;pooling=true;Max Pool Size=2;" providerName="System.Data.OracleClient"/>
    <add name="ConnectionString" connectionString="Data Source=ADCHINA;Persist Security Info=True;User ID=ac_corp;Password=ac_corp;Unicode=True;Pooling=true;Min Pool Size=1;Max Pool Size=2" providerName="System.Data.OracleClient"/>
  </connectionStrings>