<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
      autoReload="true"
      throwExceptions="false"
      internalLogLevel="Off" internalLogFile="c:\temp\nlog-internal.log">

  <variable name="myvar" value="myvalue"/>

  <targets>
    <!--普通日志-->
    <target xsi:type="File" name="info" fileName="${basedir}/logs/log.log"
            layout="${longdate} ${uppercase:${level}} ${message}"
            maxArchiveFiles="50"
            archiveAboveSize="5242880"
            archiveNumbering="Rolling"
            />
    <!--错误日志-->
    <target xsi:type="File" name="err" fileName="${basedir}/Errors/Error.log"
            layout="${longdate} ${uppercase:${level}} ${message} --${ticks}"
            maxArchiveFiles="50"
            archiveAboveSize="5242880"
            archiveNumbering="Rolling"
            />

    <!--存入Oracle数据库-->
    <target name="database" xsi:type="Database"
              dbProvider="Oracle.ManagedDataAccess.Client.OracleConnection, Oracle.ManagedDataAccess"
              connectionString="Data Source=192.168.1.100/wifi;user id=system;password=oracle"
             >
      <!--这里的插入语句，注意最后不要加分号，否则会报错。另外，Oracle中需要用":"，用"@"会报错-->
      <commandText>
        <![CDATA[
        insert into bdcdataar.log4net_log(no,log_date,log_thread,log_level,log_location,log_message,log_exception,system_id) values(bdcdataar.log4net_log_seq.nextval,to_date(substr(:log_date,1,19),‘yyyy-mm-dd hh24:mi:ss‘),:log_thread,:log_level,:log_location,:log_message,:log_exception,‘共享查询‘)
        ]]>
      </commandText>
      <parameter name=":log_date" layout="${longdate}"  />
      <parameter name=":log_thread" layout="${threadid}"  />
      <parameter name=":log_level" layout="${level}" />
      <parameter name=":log_location" layout="${callsite:filename=true}" />
      <parameter name=":log_message" layout="${message}" />
      <parameter name=":log_exception" layout="${exception:tostring}" />
    </target>
  </targets>

  <rules>
    <!--普通日志-->
    <logger name="*" minlevel="Trace" maxlevel="Info" writeTo="info" />
    <!--错误日志-->
    <logger name="*" minlevel="Warn" maxlevel="Fatal" writeTo="err" />
    <!--所有日志-->
    <logger name="*" minlevel="Trace" maxlevel="Fatal" writeTo="database" />
  </rules>
</nlog>

public class LogHelper
{
    public static NLog.Logger nlog = NLog.LogManager.GetCurrentClassLogger();

    /// <summary>
    /// 普通的文件记录日志
    /// </summary>
    /// <param name="info">信息</param>
    public static void WriteLog(string info)
    {
        nlog.Debug(info);
    }
}

create table bdcdataar.log4net_log
(
       no    int primary key,--序号
       log_date  date,--时间
       log_thread    int,--线程号
       log_level     varchar2(10),--日志等级
       log_location  varchar2(500),--日志位置
       log_message   clob,--消息
       log_exception clob,--异常
       system_id varchar2(50)  --系统id，用于标识不同的系统
);

create sequence bdcdataar.log4net_log_seq
minvalue 1  
maxvalue 999999999  
start with 1
increment by 1;