备份与还原ORACLE数据库(通过CMD命令执行)

31.1:(若用程序调用cmd，则在备份和还原 末尾语句加上 2>&1 ，直接运行则不需要加)

--备份：
     1) exp SA/"""abc@1234"""@192.168.31.1:1521/DB1 buffer=10240000 file=C:\bak\data_back.dmp log=C:\bak\data_bak_explog.txt owner=(sa,user1) 2>&1
      --还原：还原前先执行删除，后执行还原
    1)  sqlplus sa/"""abc@1234"""@192.168.31.1:1521/DB1 @C:\bak\deleteDBObjects.txt
    2)  imp SA/"""abc@1234"""@192.168.31.1:1521/DB1 file=C:\bak\data_back.dmp full=y ignore=y 2>&1

deleteDBObjects.txt内容：
                      declare vsql varchar2(2000);
                      begin
                            --删除表
                            BEGIN
                              for i in (select 'drop table '||owner||'.'||table_name||' cascade constraints' v_name
                                          from dba_tables where owner='SA' or owner='user1')
                          loop
                              vsql:=i.v_name;
                             --dbms_output.put_line(vsql);
                               execute immediate vsql;
                            end loop;
                            end;

--删除过程和函数
                            BEGIN
                              for i in (select 'drop '|| object_type||' '||owner||'.' || object_name||'' v_name
                                        from dba_objects where (object_type='PROCEDURE' or object_type='FUNCTION' or object_type='PACKAGE') and (owner='SA' or owner='user1')
                                        )
                              loop
                              vsql:=i.v_name;
                             --dbms_output.put_line(vsql);
                               execute immediate vsql;
                              end loop;
                            end;
                      end;
                      /
                      exit;

相关代码如下：

public async void ExecuteCmd()
      {
          try
          {
              Process[] MyProcess = Process.GetProcessesByName("exp");//获取已经存在的exp.exe和imp.exe进程
              MyProcess.ToList().AddRange(Process.GetProcessesByName("imp"));
              if (MyProcess.Length != 0)
              {
                  for (int i = 0; i < MyProcess.Length; i++)
                  {
                      MyProcess[i].Kill();//关闭已存在的进程
                      MyProcess[i].Dispose();
                  }
              }

string cmd = txtInput.Text;// strInput;
              System.Diagnostics.Process p = new System.Diagnostics.Process();
              p.StartInfo.FileName = "cmd.exe";// @"D:\MyOracle\Oracle11g\product\11.2.0\dbhome_1\BIN\exp.exe";
                                               //启用操作系统外壳程序执行
              p.StartInfo.UseShellExecute = false;
              p.StartInfo.RedirectStandardInput = true;
              p.StartInfo.RedirectStandardOutput = true;
              p.StartInfo.RedirectStandardError = true;
              p.StartInfo.CreateNoWindow = true;

p.OutputDataReceived += new DataReceivedEventHandler(P_OutputDataReceived);
              p.ErrorDataReceived += new DataReceivedEventHandler(P_OutputDataReceived);

p.Start();                                  //设置自动刷新缓冲并更新   
                                                          //p.StandardInput.AutoFlush = true;           //写入命令     
              p.StandardInput.AutoFlush = true;           //写入命令
              p.StandardInput.WriteLine(cmd);                             //p.StandardInput.WriteLine(strInput);
              p.StandardInput.WriteLine("exit");          //等待结束

p.BeginOutputReadLine();
              p.WaitForExit();

}
          catch (Exception ex)
          {
          }
      }

delegate void AsynUpdateUI(string msg);
      private void UpdataUIStatus(string msg)
      {
          if (InvokeRequired)
          {
              this.Invoke(new AsynUpdateUI(delegate (string argMsg)
              {

txtShow.AppendText(argMsg + Environment.NewLine);

}), msg);
          }
          else
          {
              txtShow.AppendText(msg + Environment.NewLine);
          }
      }
      private void P_OutputDataReceived(object sender, DataReceivedEventArgs e)
      {
          if (e.Data != null)
          {
              string x = e.Data.ToString();
              UpdataUIStatus(x);
          }
      }
      private void btnBAKUP_Click(object sender, EventArgs e)
      {
          Thread t = new Thread(new ThreadStart(this.ExecuteCmd));
          t.Start();
      }

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