Question

我正在备份和还原到系统。

对于使用以下代码制作Backup im：

textInformacao.Text = "";


        Environment.SetEnvironmentVariable("PGPASSWORD", ConfiguracaoSistema.Password);

        ProcessStartInfo psi = new ProcessStartInfo();
        psi.FileName = @Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\backup\\pg_dump.exe";
        psi.RedirectStandardInput = true;
        psi.RedirectStandardOutput = false;
        psi.CreateNoWindow = true;
        psi.Arguments = string.Format(@"-h {0} -p {1} -U {2} -F c -b -v -f {3} {4}", caminhoServidor, ConfiguracaoSistema.Port, ConfiguracaoSistema.UserName, arquivoSaida, ConfiguracaoSistema.NomeDataBase);
        psi.UseShellExecute = false;

        p = Process.Start(psi);
        p.StartInfo.RedirectStandardError = true;
        p.StartInfo.RedirectStandardOutput = true;
        p.EnableRaisingEvents = true;
        p.StartInfo.UseShellExecute = false;
        p.StartInfo.CreateNoWindow = true;
        p.OutputDataReceived += new DataReceivedEventHandler((s, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += e.Data + "\r\n"; textInformacao.ScrollToEnd(); })); });
        p.ErrorDataReceived += new DataReceivedEventHandler((s, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += e.Data + "\r\n"; textInformacao.ScrollToEnd(); })); });
        p.Exited += (sender, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += "Processo Finalizado!"; })); };
        p.Start();
        p.BeginOutputReadLine();
        p.BeginErrorReadLine();

如果我得到此文件并打开pgAdmin，则一切正常，数据库将恢复。

使用以下代码进行即时还原：

textInformacao.Text = "";

        Environment.SetEnvironmentVariable("PGPASSWORD", ConfiguracaoSistema.Password);

        string caminhoArquivo = @Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\testesigep_vs.backup";



        ProcessStartInfo psi = new ProcessStartInfo();
        psi.FileName = @Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\backup\\pg_restore.exe";
        psi.RedirectStandardInput = true;
        psi.RedirectStandardOutput = false;
        psi.CreateNoWindow = true;
        psi.Arguments = string.Format(@"-h {0} -p {1} -U {2} -c -d {3} -v {4}", caminhoServidor, ConfiguracaoSistema.Port, ConfiguracaoSistema.UserName, ConfiguracaoSistema.NomeDataBase, caminhoArquivo);
        psi.UseShellExecute = false;


        p = Process.Start(psi);
        p.StartInfo.RedirectStandardError = true;
        p.StartInfo.RedirectStandardOutput = true;
        p.EnableRaisingEvents = true;
        p.StartInfo.UseShellExecute = false;
        p.StartInfo.CreateNoWindow = true;
        p.OutputDataReceived += new DataReceivedEventHandler((s, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += e.Data + "\r\n"; textInformacao.ScrollToEnd(); })); });
        p.ErrorDataReceived += new DataReceivedEventHandler((s, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += e.Data + "\r\n"; textInformacao.ScrollToEnd(); })); });
        p.Exited += (sender, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += "Processo Finalizado!"; })); };
        p.Start();
        p.BeginOutputReadLine();
        p.BeginErrorReadLine();

运行此代码时，我遇到一个“大问题”，所有行都是重复的。看起来我的数据库已恢复：

Database picture

外观图片，外观ID列具有两个相同的值。

如何解决此问题？为什么在PgAdmin Restore中没有问题，而在c＃中出现此问题？

EDIT ::::::::::::::::::::::::::::::::::::::::::::::::: :::::: 开始还原

pg_restore：连接到数据库以进行还原 pg_restore：删除数据库sigep_vs pg_restore：[存档（db）]处理目录时出错： pg_restore：[归档器（db）]来自TOC条目2949的错误； 1262 158041数据库sigep_vs sigep pg_restore：[存档（db）]无法执行查询：错误：无法删除当前打开的数据库命令是：DROP DATABASE sigep_vs;

pg_restore：创建数据库“ sigep_vs” pg_restore：[存档（db）]无法执行查询：错误：数据库“ sigep_vs”已存在命令是：CREATE DATABASE sigep_vs WITH TEMPLATE = template0 ENCODING ='UTF8'LC_COLLATE ='C'LC_CTYPE ='C';

Environment.SetEnvironmentVariable("PGPASSWORD", ConfiguracaoSistema.Password);

        string caminhoArquivo = @Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\testesigep_vs.backup";

        ProcessStartInfo psi = new ProcessStartInfo();
        psi.FileName = @Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\backup\\pg_restore.exe";
        psi.RedirectStandardInput = true;
        psi.RedirectStandardOutput = false;
        psi.CreateNoWindow = true;
        psi.Arguments = string.Format(@"-h {0} -p {1} -U {2} -d {3} -v {4}", caminhoServidor, ConfiguracaoSistema.Port, ConfiguracaoSistema.UserName, ConfiguracaoSistema.NomeDataBase, caminhoArquivo);
        psi.UseShellExecute = false;

        p = new Process { StartInfo = psi };

        p.StartInfo.RedirectStandardError = true;
        p.StartInfo.RedirectStandardOutput = true;
        p.EnableRaisingEvents = true;
        p.StartInfo.UseShellExecute = false;
        p.StartInfo.CreateNoWindow = true;
        p.OutputDataReceived += new DataReceivedEventHandler((s, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += e.Data + "\r\n"; textInformacao.ScrollToEnd(); })); });
        p.ErrorDataReceived += new DataReceivedEventHandler((s, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += e.Data + "\r\n"; textInformacao.ScrollToEnd(); })); });
        p.Exited += (sender, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += "Processo Finalizado!"; })); };
        p.Start();
        p.BeginOutputReadLine();
        p.BeginErrorReadLine();

Answer 1

现在，正在工作：

Environment.SetEnvironmentVariable("PGPASSWORD", ConfiguracaoSistema.Password);

        string caminhoArquivo = @Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\testesigep_vs.backup";

        ProcessStartInfo psi = new ProcessStartInfo();
        psi.FileName = @Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\backup\\pg_restore.exe";
        psi.RedirectStandardInput = true;
        psi.RedirectStandardOutput = false;
        psi.CreateNoWindow = true;
        psi.Arguments = string.Format(@"-h {0} -p {1} -U {2} -d {3} -v {4}", caminhoServidor, ConfiguracaoSistema.Port, ConfiguracaoSistema.UserName, ConfiguracaoSistema.NomeDataBase, caminhoArquivo);
        psi.UseShellExecute = false;

        p = new Process { StartInfo = psi };

        p.StartInfo.RedirectStandardError = true;
        p.StartInfo.RedirectStandardOutput = true;
        p.EnableRaisingEvents = true;
        p.StartInfo.UseShellExecute = false;
        p.StartInfo.CreateNoWindow = true;
        p.OutputDataReceived += new DataReceivedEventHandler((s, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += e.Data + "\r\n"; textInformacao.ScrollToEnd(); })); });
        p.ErrorDataReceived += new DataReceivedEventHandler((s, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += e.Data + "\r\n"; textInformacao.ScrollToEnd(); })); });
        p.Exited += (sender, e) => { Dispatcher.BeginInvoke(new Action(() => { textInformacao.Text += "Processo Finalizado!"; })); };
        p.Start();
        p.BeginOutputReadLine();
        p.BeginErrorReadLine();`

恢复数据库PostgreSQL重复行

1 个答案: