EF 配置Oracle数据库的具体操作方法

ef可以配置oracle数据库，但不知道为什么一直配置不好。

其实可以使用使用nuget管理程序包，自动配置数据库，但需要注意的时，需要安装两个包，而并不是一个，我一直以为时一个，但已启动程序就会出错。

安装后配置文件的主要的改变如下：

 <configsections>
  <!-- for more information on entity framework configuration, visit http://go.microsoft.com/fwlink/?linkid=237468 -->
  <section name="entityframework" type="system.data.entity.internal.configfile.entityframeworksection, entityframework, version=6.0.0.0, culture=neutral, publickeytoken=b77a5c561934e089" requirepermission="false" />
  <section name="oracle.manageddataaccess.client" type="oracleinternal.common.odpmsectionhandler, oracle.manageddataaccess, version=4.121.2.0, culture=neutral, publickeytoken=89b483f429c47342" />
 </configsections>
 <connectionstrings>
  <add name="defaultconnection" providername="oracle.manageddataaccess.client" connectionstring="data source=(description=(address=(protocol=tcp)(host=172.19.19.187)(port=6521))(connect_data=(service_name=easa)));user id=user;password=password;" /> 
 </connectionstrings>

<entityframework>
  <defaultconnectionfactory type="oracle.manageddataaccess.entityframework.oracleconnectionfactory, oracle.manageddataaccess.entityframework, version=6.121.2.0, culture=neutral, publickeytoken=89b483f429c47342" />
  <providers>
   <provider invariantname="oracle.manageddataaccess.client" type="oracle.manageddataaccess.entityframework.eforacleproviderservices, oracle.manageddataaccess.entityframework, version=6.121.2.0, culture=neutral, publickeytoken=89b483f429c47342" />
  </providers>
 </entityframework>
 <system.data>
  <dbproviderfactories>
   <remove invariant="oracle.manageddataaccess.client" />
   <add name="odp.net, managed driver" invariant="oracle.manageddataaccess.client" description="oracle data provider for .net, managed driver" type="oracle.manageddataaccess.client.oracleclientfactory, oracle.manageddataaccess, version=4.121.2.0, culture=neutral, publickeytoken=89b483f429c47342" />
  </dbproviderfactories>
 </system.data>
 <oracle.manageddataaccess.client>
  <version number="*">
   <datasources>
    <datasource alias="sampledatasource" descriptor="(description=(address=(protocol=tcp)(host=172.19.19.187)(port=6521))(connect_data=(service_name=easa))) " />
   </datasources>
  </version>
 </oracle.manageddataaccess.client>

 oracle.manageddataaccess.client配置节的datasource好像没有用

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