执行环境：
可以在SQLPLUS.EXE或者DOS（命令行）中执行，
DOS中可以执行时由于 在oracle 8i 中 安装目录\ora81\BIN被设置为全局路径，
该目录下有EXP.EXE与IMP.EXE文件被用来执行导入导出。
oracle用java编写，我想SQLPLUS.EXE、EXP.EXE、IMP.EXE这俩个文件是被包装后的类文件。
SQLPLUS.EXE调用EXP.EXE、IMP.EXE他们所包裹的类，完成导入导出功能。 继续阅读“oracle数据库的备份与还原（本地及远程操作）”
MFC通过ADO连接Oracle数据库
程序的代码如下：
1、在”StdAfx.h”文件中导入库：
#import "C:\Program Files\Common Files\System\ado\msado15.dll" no_namespace rename ("EOF", "adoEOF")
2、在类里添加成员变量：
_ConnectionPtr m_pCnn;
3、连接数据库：
m_pCnn.CreateInstance(__uuidof(Connection));
try{
m_pCnn->ConnectionTimeout = 5; //设置连接时间
m_pCnn->Open(_bstr_t(sConn),strUserID,strPwd,adModeUnknown);
return true;
}
catch(_com_error e){
AfxMessageBox(e.Description());
return false;
}
在调试时如果出现以下错误： 继续阅读“MFC通过ADO连接Oracle数据库”
MS SQL的服务器连接、远程同步数据
MS SQL的服务器连接的创建：
exec sp_addlinkedserver @server='服务器连接名',@SRVPRODUCT='连接的数据库名',@PROVIDER=N'SQLOLEDB',@DATASRC='POSSERVER DB的IP'
EXEC SP_ADDLINKEDSRVLOGIN '服务器连接名','FALSE',NULL,'登录名','登录密码'
从远程的MS SQL同步数据到本地：
INSERT INTO 数据库表名
SELECT *
FROM OPENDATASOURCE(
'SQLOLEDB',
'Data Source=远程IP;User ID=用户名;Password=用户密码'
).数据库名.dbo.数据库表名
MS SQL数据的格式化导入与导出
bcp Beauty_Developer..LOADSTOCK_2_TMPTABLE format nul -f LOADSTOCK_2_TMPTABLE.fmt -t, -c -S10.8.0.228 -Usa -Psasa
bcp Beauty_Developer..LOADSTOCK_2_TMPTABLE in CS01.csv -f LOADSTOCK_2_TMPTABLE.fmt -t, -S10.8.0.228 -Usa -Psasa
小程序：一键隐藏多个浏览器窗口
双击运行程序后，直接隐藏多桌面右下角：
点击“关于”，可以查看到所匹配到的浏览器：
程序是用WIN32写的，无需安装！
老板键是：Ctrl+Alt+F9， 注册码（用户名：iawen, 注册码:0C26-E82C-B3F5-E7F9）
如下：
ClossAllWebBrowser.rar
Oracle的审计功能(简单记录)
切换权限用户：
SQLPLUS> connect / AS SYSDBA;
1、查看状态
SQLPLUS> show parameter audit;
2、修改状态（用户SYS）：
SQLPLUS> alter system set audit_trail=DB,Extended scope=spfile;
3、重启Oracle
SQLPLUS> shutdown normal;
SQLPLUS> startup;
4、查看审计状态（用户SYS）
SQLPLUS> show parameter audit;
5、设置审计（用户SYS）
SQLPLUS> audit DELETE, INSERT,SELECT, UPDATE on edms.t_audit_demo by access Whenever successful;
audit insert table by MFDB;
audit update table by MFDB;
audit delete table by MFDB;
6、关闭审计
SQLPLUS> noaudit DELETE, INSERT,SELECT, UPDATE on edms.t_audit_demo;
7、查询已经添加的审计
SELECT USER_NAME, AUDIT_OPTION, SUCCESS, FAILURE FROM DBA_STMT_AUDIT_OPTS;
8、查看记录
SELECT * FROM sys.aud$
一路欢笑影溪二月风
芦笛群，元帅当首哨
各路好汉，四方妹子 齐声叫
继续阅读“一路欢笑影溪二月风”
[转载]关于mysql处理百万级以上的数据时如何提高其查询速度的方法
以下是网上流传比较广泛的30种SQL查询语句优化方法：
1、应尽量避免在 where 子句中使用!=或<>操作符，否则将引擎放弃使用索引而进行全表扫描。
2、对查询进行优化，应尽量避免全表扫描，首先应考虑在 where 及 order by 涉及的列上建立索引。
3、应尽量避免在 where 子句中对字段进行 null 值判断，否则将导致引擎放弃使用索引而进行全表扫描，如：
select id from t where num is null
可以在num上设置默认值0，确保表中num列没有null值，然后这样查询：
select id from t where num=0
继续阅读“[转载]关于mysql处理百万级以上的数据时如何提高其查询速度的方法”
C#获取硬件信息类
using System;
using System.Runtime.InteropServices;
using System.Management;
namespace Hardware
{
public class MyClass
{
static void Main()
{
HardwareInfo hardInfo = new HardwareInfo();
Console.WriteLine("机器名: "+hardInfo.GetHostName());
Console.WriteLine("CPU编号: "+hardInfo.GetCpuID());
Console.WriteLine("第一块硬盘编号: "+hardInfo.GetHardDiskID());
Console.WriteLine("MAC地址: "+hardInfo.GetMacAddress());
return;
}
}
public class HardwareInfo
{
//取机器名
public string GetHostName()
{
return System.Net.Dns.GetHostName();
}
//取CPU编号
public String GetCpuID()
{
try
{
ManagementClass mc = new ManagementClass("Win32_Processor");
ManagementObjectCollection moc = mc.GetInstances();
String strCpuID = null;
foreach (ManagementObject mo in moc)
{
strCpuID = mo.Properties["ProcessorId"].Value.ToString();
break;
}
return strCpuID;
}
catch
{
return "";
}
}//end method
//取第一块硬盘编号
public String GetHardDiskID()
{
try
{
ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
String strHardDiskID = null;
foreach (ManagementObject mo in searcher.Get())
{
strHardDiskID = mo["SerialNumber"].ToString().Trim();
break;
}
return strHardDiskID;
}
catch
{
return "";
}
}//end
public enum NCBCONST
{
NCBNAMSZ = 16, /* absolute length of a net name */
MAX_LANA = 254, /* lana's in range 0 to MAX_LANA inclusive */
NCBENUM = 0x37, /* NCB ENUMERATE LANA NUMBERS */
NRC_GOODRET = 0x00, /* good return */
NCBRESET = 0x32, /* NCB RESET */
NCBASTAT = 0x33, /* NCB ADAPTER STATUS */
NUM_NAMEBUF = 30, /* Number of NAME's BUFFER */
}
[StructLayout(LayoutKind.Sequential)]
public struct ADAPTER_STATUS
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
public byte[] adapter_address;
public byte rev_major;
public byte reserved0;
public byte adapter_type;
public byte rev_minor;
public ushort duration;
public ushort frmr_recv;
public ushort frmr_xmit;
public ushort iframe_recv_err;
public ushort xmit_aborts;
public uint xmit_success;
public uint recv_success;
public ushort iframe_xmit_err;
public ushort recv_buff_unavail;
public ushort t1_timeouts;
public ushort ti_timeouts;
public uint reserved1;
public ushort free_ncbs;
public ushort max_cfg_ncbs;
public ushort max_ncbs;
public ushort xmit_buf_unavail;
public ushort max_dgram_size;
public ushort pending_sess;
public ushort max_cfg_sess;
public ushort max_sess;
public ushort max_sess_pkt_size;
public ushort name_count;
}
[StructLayout(LayoutKind.Sequential)]
public struct NAME_BUFFER
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.NCBNAMSZ)]
public byte[] name;
public byte name_num;
public byte name_flags;
}
[StructLayout(LayoutKind.Sequential)]
public struct NCB
{
public byte ncb_command;
public byte ncb_retcode;
public byte ncb_lsn;
public byte ncb_num;
public IntPtr ncb_buffer;
public ushort ncb_length;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.NCBNAMSZ)]
public byte[] ncb_callname;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.NCBNAMSZ)]
public byte[] ncb_name;
public byte ncb_rto;
public byte ncb_sto;
public IntPtr ncb_post;
public byte ncb_lana_num;
public byte ncb_cmd_cplt;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
public byte[] ncb_reserve;
public IntPtr ncb_event;
}
[StructLayout(LayoutKind.Sequential)]
public struct LANA_ENUM
{
public byte length;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.MAX_LANA)]
public byte[] lana;
}
[StructLayout(LayoutKind.Auto)]
public struct ASTAT
{
public ADAPTER_STATUS adapt;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = (int)NCBCONST.NUM_NAMEBUF)]
public NAME_BUFFER[] NameBuff;
}
public class Win32API
{
[DllImport("NETAPI32.DLL")]
public static extern char Netbios(ref NCB ncb);
}
public string GetMacAddress()
{
string addr = "";
try
{
int cb;
ASTAT adapter;
NCB Ncb = new NCB();
char uRetCode;
LANA_ENUM lenum;
Ncb.ncb_command = (byte)NCBCONST.NCBENUM;
cb = Marshal.SizeOf(typeof(LANA_ENUM));
Ncb.ncb_buffer = Marshal.AllocHGlobal(cb);
Ncb.ncb_length = (ushort)cb;
uRetCode = Win32API.Netbios(ref Ncb);
lenum = (LANA_ENUM)Marshal.PtrToStructure(Ncb.ncb_buffer, typeof(LANA_ENUM));
Marshal.FreeHGlobal(Ncb.ncb_buffer);
if (uRetCode != (short)NCBCONST.NRC_GOODRET)
return "";
for (int i = 0; i < lenum.length; i++)
{
Ncb.ncb_command = (byte)NCBCONST.NCBRESET;
Ncb.ncb_lana_num = lenum.lana[i];
uRetCode = Win32API.Netbios(ref Ncb);
if (uRetCode != (short)NCBCONST.NRC_GOODRET)
return "";
Ncb.ncb_command = (byte)NCBCONST.NCBASTAT;
Ncb.ncb_lana_num = lenum.lana[i];
Ncb.ncb_callname[0] = (byte)'*';
cb = Marshal.SizeOf(typeof(ADAPTER_STATUS)) + Marshal.SizeOf(typeof(NAME_BUFFER)) * (int)NCBCONST.NUM_NAMEBUF;
Ncb.ncb_buffer = Marshal.AllocHGlobal(cb);
Ncb.ncb_length = (ushort)cb;
uRetCode = Win32API.Netbios(ref Ncb);
adapter.adapt = (ADAPTER_STATUS)Marshal.PtrToStructure(Ncb.ncb_buffer, typeof(ADAPTER_STATUS));
Marshal.FreeHGlobal(Ncb.ncb_buffer);
if (uRetCode == (short)NCBCONST.NRC_GOODRET)
{
if (i > 0) addr += ":";
addr = string.Format("{0,2:X}:{1,2:X}:{2,2:X}:{3,2:X}:{4,2:X}:{5,2:X}",
adapter.adapt.adapter_address[0],
adapter.adapt.adapter_address[1],
adapter.adapt.adapter_address[2],
adapter.adapt.adapter_address[3],
adapter.adapt.adapter_address[4],
adapter.adapt.adapter_address[5]);
}
}
}
catch
{ }
return addr.Replace(' ', '0');
}
}
}
LINQ的INNER，GROUP BY语法
LINQ的语法：
var reportList = from sr in context.SYS_REPORT
join srf in context.SYS_REPORT_FORM
on sr.REPORT_ID equals srf.REPORT_ID
group sr by new { sr.REPORT_ID, sr.NAME } into p
orderby p.FirstOrDefault().ENAME
select new { p.FirstOrDefault().REPORT_ID, p.FirstOrDefault().NAME };
对待的SQL语法：
SELECT SR.REPORT_ID, SR.NAME FROM SYS_REPORT SR
INNER JOIN SYS_REPORT_FORM SRF ON SR.REPORT_ID=SRF.REPORT_ID
GROUP BY SR.REPORT_ID, SR.NAME
IIS7的应用程序池设置
iis7 应用程序池回收设置，可以通过特定时间的设置来控制定时回收应用程序池，Application_End事件也会被调用。也可以如下设置：
1、回收——固定时间间隔（分钟） 改为 0
——虚拟/专用内存限制（KB） 改为 0
2、进程模型——闲置超时（分钟） 改为 0
这样子，一般情况下程序池就不会被自动回收了，后台一些简单的计算线程就会正常工作。