重启后 XAMPP MySQL 服务崩溃

Question

我刚刚安装了一个XAMPP 7.3.6-2-VC15 for Win64，安装后就没事了，MySQL从控制面板启动没有错误，一切正常。

重新启动我的电脑后，Apache 仍在工作，但 MySQL 拒绝启动！我尝试重新安装 XAMPP，但它完全一样。 MySQL 工作正常，重启后停止工作。

这是我仅有的几条日志...

在控制面板中：

09:48:10  [mysql]   Attempting to start MySQL app...
09:48:10  [mysql]   Status change detected: running
09:48:11  [mysql]   Status change detected: stopped
09:48:11  [mysql]   Error: MySQL shutdown unexpectedly.
09:48:11  [mysql]   This may be due to a blocked port, missing dependencies, 
09:48:11  [mysql]   improper privileges, a crash, or a shutdown by another method.
09:48:11  [mysql]   Press the Logs button to view error logs and check
09:48:11  [mysql]   the Windows Event Viewer for more clues
09:48:11  [mysql]   If you need more help, copy and post this
09:48:11  [mysql]   entire log window on the forums

在日志文件中：

2019-07-02  9:48:10 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-07-02  9:48:10 0 [Note] InnoDB: Uses event mutexes
2019-07-02  9:48:10 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-07-02  9:48:10 0 [Note] InnoDB: Number of pools: 1
2019-07-02  9:48:10 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-07-02  9:48:10 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-07-02  9:48:10 0 [Note] InnoDB: Completed initialization of buffer pool
2019-07-02  9:48:10 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=1834407
2019-07-02  9:48:10 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-07-02  9:48:10 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-07-02  9:48:10 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-07-02  9:48:10 0 [Note] InnoDB: Setting file 'C:\xampp\mysql\data\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-07-02  9:48:10 0 [Note] InnoDB: File 'C:\xampp\mysql\data\ibtmp1' size is now 12 MB.
2019-07-02  9:48:10 0 [Note] InnoDB: Waiting for purge to start
2019-07-02  9:48:10 0 [Note] InnoDB: 10.3.16 started; log sequence number 1834416; transaction id 265
2019-07-02  9:48:10 0 [Note] InnoDB: Loading buffer pool(s) from C:\xampp\mysql\data\ib_buffer_pool
2019-07-02  9:48:10 0 [Note] InnoDB: Buffer pool(s) load completed at 190702  9:48:10
2019-07-02  9:48:10 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-07-02  9:48:10 0 [Note] Server socket created on IP: '::'.

我尝试以下方法：

• 将端口更改为 3306 以外的端口 => 不成功
• 以管理员身份运行 xamp 控制面板 => 不成功
• 删除临时表 ibdata1 和 ibtmp1 => 不成功

如果有人有想法...

编辑：我尝试以管理员身份通过管理面板安装为 Windows 服务。所以，我在日志中有一些新行。似乎用户表已损坏...我该如何修复？

2019-07-02 10:04:41 0 [ERROR] mysqld.exe: Table '.\mysql\user' is marked as crashed and should be repaired
2019-07-02 10:04:41 0 [ERROR] mysqld.exe: Index for table '.\mysql\user' is corrupt; try to repair it
2019-07-02 10:04:41 0 [ERROR] Couldn't repair table: mysql.user
2019-07-02 10:04:41 0 [ERROR] Fatal error: Can't open and lock privilege tables: Index for table 'user' is corrupt; try to repair it

Answer 1

这个对我有帮助：

从控制面板打开 shell 并使用以下命令启动 mysql：

mysqld –-console –-skip-grant-tables –-skip-external-locking

从控制面板打开另一个shell并使用以下命令修复数据库：

mysqlcheck -r --databases mysql --use-frm

停止mysql，关闭shell并正常重启mysql。

基于：Re: Corrupt mysql.users How to fix

Answer 2

我和你一样遇到了这个问题。我已经解决了这个问题，如下所示。

Copy from xampp/mysql/backup folder and paste in xampp/mysql/data folder except ibdata1 file.

如果您从 xampp/mysql/data 替换 ibdata1 文件，那么某些数据库您将得到错误表不存在。