从 Windows 10 中 XAMP 中备份的“数据”文件夹中恢复 InnoDB 数据库

问题描述 投票：0回答：2

我从 mysql 文件夹复制了 data 目录并卸载了 XAMPP，因为 MySQL 没有启动。我安装了相同版本的XAMPP并将data文件夹备份到mysql数据目录中。起初只将所需的数据库文件夹复制到 mysql 数据目录中，名为 product 。 PhpMyAdmin 正确显示了表，尽管那里没有记录/行，并且显示“引擎中不存在表”。然后我将DATA文件夹中的所有内容复制到mysql数据文件夹中，现在它无法启动。 现在的问题是 MySQL 没有启动。我尝试设置 innodb_force_recovery但是启动mysql失败。

错误日志如下：

2021-06-11  0:08:23 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2021-06-11  0:08:23 0 [Note] InnoDB: Uses event mutexes
2021-06-11  0:08:23 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2021-06-11  0:08:23 0 [Note] InnoDB: Number of pools: 1
2021-06-11  0:08:23 0 [Note] InnoDB: Using SSE2 crc32 instructions
2021-06-11  0:08:23 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2021-06-11  0:08:23 0 [Note] InnoDB: Completed initialization of buffer pool
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\applied.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`applied``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`applied` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\data.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`data``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`data` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\data_employer.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`data_employer``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`data_employer` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\education.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`education``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`education` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\education_list.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`education_list``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`education_list` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\industry.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`industry``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`industry` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\jobs.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`jobs``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`jobs` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\login.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`login``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`login` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\login_admini.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`login_admini``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`login_admini` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\login_employer.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`login_employer``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`login_employer` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\resume.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`resume``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`resume` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\jobs\selected.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``jobs`.`selected``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `jobs`.`selected` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\projects\entries.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``projects`.`entries``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `projects`.`entries` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\projects\geoname.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``projects`.`geoname``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `projects`.`geoname` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\projects\geonamebackup.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``projects`.`geonamebackup``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `projects`.`geonamebackup` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\projects\pincodes.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``projects`.`pincodes``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `projects`.`pincodes` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\projects\specifier.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``projects`.`specifier``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `projects`.`specifier` because it could not be opened.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 3 in a file operation.
2021-06-11  0:08:23 0 [ERROR] InnoDB: The error means the system cannot find the path specified.
2021-06-11  0:08:23 0 [ERROR] InnoDB: If you are installing InnoDB, remember that you must create directories yourself, InnoDB does not create them.
2021-06-11  0:08:23 0 [ERROR] InnoDB: Cannot open datafile for read-only: '.\projects\users.ibd' OS error: 203
2021-06-11  0:08:23 0 [ERROR] InnoDB: Operating system error number 203 in a file operation.
2021-06-11  0:08:23 0 [Note] InnoDB: Some operating system error numbers are described at https://mariadb.com/kb/en/library/operating-system-error-codes/
2021-06-11  0:08:23 0 [ERROR] InnoDB: Could not find a valid tablespace file for ``projects`.`users``. Please refer to https://mariadb.com/kb/en/innodb-data-dictionary-troubleshooting/ for how to resolve the issue.
2021-06-11  0:08:23 0 [Warning] InnoDB: Ignoring tablespace for `projects`.`users` because it could not be opened.
2021-06-11  0:08:23 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2021-06-11  0:08:23 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2021-06-11  0:08:23 0 [Note] InnoDB: Setting file 'D:\Program Files\XAMP\mysql\data\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2021-06-11  0:08:23 0 [Note] InnoDB: File 'D:\Program Files\XAMP\mysql\data\ibtmp1' size is now 12 MB.
2021-06-11  0:08:23 0 [Note] InnoDB: Waiting for purge to start
2021-06-11  0:08:23 0 [Note] InnoDB: 10.4.19 started; log sequence number 1515509790; transaction id 611499
2021-06-11  0:08:23 0 [Note] InnoDB: Loading buffer pool(s) from D:\Program Files\XAMP\mysql\data\ib_buffer_pool
2021-06-11  0:08:23 0 [Note] Plugin 'FEEDBACK' is disabled.
2021-06-11  0:08:23 0 [Note] Server socket created on IP: '::'.
mysql innodb recovery data-recovery
2个回答
1
投票

就我而言，这个解决方案有效：

如果id*文件被删除，并且没有快照/备份，则需要重新初始化mysql，

  1. 在任何更改之前拍摄快照

  2. 如果已经 mysqldump 所有数据库，跳到步骤 2

    mkdir /tmp/mysql

vi /etc/my.cnf（如果存在则删除以下变量：innodb_file_per_table、innodb_force_recovery）

mysqld --console --user=mysql --initialize --datadir=/tmp/mysql
cp -p /tmp/mysql/ib* /var/lib/mysql
vi /etc/my.cnf

添加一行：

innodb_force_recovery=6

systemctl start mysql
mysqldump --all-databases > alldb.sql

  1. 初始化mysql

    rm -Rf /var/lib/mysql/*

    vi /etc/my.cnf（如果存在则删除变量：innodb_file_per_table、innodb_force_recovery）

    mysqld --console --user=mysql --initialize --datadir=/var/lib/mysql

    （输出将显示临时密码，例如，“为 root@localhost 生成临时密码：MWq.j0>RMdV>”）

    systemctl启动mysql

    mysql -u root -p

（使用临时密码登录，并设置 root 密码 - 将“7layer”替换为您当前在 ~/.my.cnf 中拥有的默认密码）

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '7layer';
mysql> exit;

  1. 恢复数据

    mysql< alldb.sql

（如果需要替换sql文件名）

  1. 恢复用户权限

    mysql> 刷新权限；

0
投票

能够取回数据。

  1. 将 mysql/data 目录中除 mysql 和 
    performance_schema
    目录之外的所有文件移动到 data_old 目录。
  2. 从备份目录复制回 
    ibdata1
    文件，同时复制回具有要恢复的数据库名称的文件夹。
  3. 现在启动mysql，你就可以看到数据库了。使用 mysqldump 导出到 sql 文件。
  4. 卸载mysql/xampp。重新安装xampp。
  5. 使用备份数据库的名称创建一个数据库。并使用mysqldump恢复数据。

另请记住，删除数据库后，phpMyAdmin 可能无法工作，因此您可能需要切换到控制台。

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