XAMPP 中的 MySQL 无法启动

Question

当 XAMPP 软件在后台运行时，我重新启动了计算机(之前已经这样做过多次)。当我再次启动XAMPP时，MySQL无法启动!

如何在不丢失任何数据库的情况下解决此问题？我使用的是 Windows 10。

2017-10-24 16:40:56 2244 InnoDB: Warning: Using innodb_additional_mem_pool_size is DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator.
2017-10-24 16:40:56 8772 [Note] InnoDB: innodb_empty_free_list_algorithm has been changed to legacy because of small buffer pool size. In order to use backoff, increase buffer pool at least up to 20MB.

2017-10-24 16:40:56 8772 [Note] InnoDB: Using mutexes to ref count buffer pool pages
2017-10-24 16:40:56 8772 [Note] InnoDB: The InnoDB memory heap is disabled
2017-10-24 16:40:56 8772 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2017-10-24 16:40:56 8772 [Note] InnoDB: _mm_lfence() and _mm_sfence() are used for memory barrier
2017-10-24 16:40:56 8772 [Note] InnoDB: Compressed tables use zlib 1.2.3
2017-10-24 16:40:56 8772 [Note] InnoDB: Using generic crc32 instructions
2017-10-24 16:40:56 8772 [Note] InnoDB: Initializing buffer pool, size = 16.0M
2017-10-24 16:40:56 8772 [Note] InnoDB: Completed initialization of buffer pool
2017-10-24 16:40:56 8772 [Note] InnoDB: Highest supported file format is Barracuda.
2017-10-24 16:40:56 8772 [Note] InnoDB: The log sequence number 1835037 in ibdata file do not match the log sequence number 1835127 in the ib_logfiles!
2017-10-24 16:40:56 8772 [Note] InnoDB: Restoring possible half-written data pages from the doublewrite buffer...
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table mysql/gtid_slave_pos in the InnoDB data dictionary has tablespace id 10, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table mysql/innodb_index_stats in the InnoDB data dictionary has tablespace id 2, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table mysql/innodb_table_stats in the InnoDB data dictionary has tablespace id 1, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table mysql/slave_master_info in the InnoDB data dictionary has tablespace id 4, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table mysql/slave_relay_log_info in the InnoDB data dictionary has tablespace id 3, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table mysql/slave_worker_info in the InnoDB data dictionary has tablespace id 5, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__bookmark in the InnoDB data dictionary has tablespace id 11, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__central_columns in the InnoDB data dictionary has tablespace id 27, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__column_info in the InnoDB data dictionary has tablespace id 12, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__designer_settings in the InnoDB data dictionary has tablespace id 28, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__export_templates in the InnoDB data dictionary has tablespace id 29, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__favorite in the InnoDB data dictionary has tablespace id 16, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__history in the InnoDB data dictionary has tablespace id 13, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__navigationhiding in the InnoDB data dictionary has tablespace id 25, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__pdf_pages in the InnoDB data dictionary has tablespace id 14, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__recent in the InnoDB data dictionary has tablespace id 15, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__relation in the InnoDB data dictionary has tablespace id 18, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__savedsearches in the InnoDB data dictionary has tablespace id 26, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__table_coords in the InnoDB data dictionary has tablespace id 19, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__table_info in the InnoDB data dictionary has tablespace id 20, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__table_uiprefs in the InnoDB data dictionary has tablespace id 17, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__tracking in the InnoDB data dictionary has tablespace id 21, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__userconfig in the InnoDB data dictionary has tablespace id 22, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__usergroups in the InnoDB data dictionary has tablespace id 24, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [ERROR] InnoDB: Table phpmyadmin/pma__users in the InnoDB data dictionary has tablespace id 23, but tablespace with that id or name does not exist. Have you deleted or moved .ibd files? This may also be a table created with CREATE TEMPORARY TABLE whose .ibd and .frm files MySQL automatically removed, but the table still exists in the InnoDB internal data dictionary.
InnoDB: Please refer to
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html
InnoDB: for how to resolve the issue.
2017-10-24 16:40:56 8772 [Note] InnoDB: 128 rollback segment(s) are active.
2017-10-24 16:40:56 8772 [Note] InnoDB: Waiting for purge to start
2017-10-24 16:40:56 11080 [ERROR] InnoDB: Failed to find tablespace for table '"mysql"."innodb_index_stats"' in the cache. Attempting to load the tablespace with space id 2.
2017-10-24 16:40:56 2b48  InnoDB: Operating system error number 3 in a file operation.
InnoDB: The error means the system cannot find the path specified.
2017-10-24 16:40:56 11080 [ERROR] InnoDB: Could not find a valid tablespace file for 'mysql/innodb_index_stats'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2017-10-24 16:40:56 11080 [ERROR] InnoDB: Failed to find tablespace for table '"mysql"."innodb_table_stats"' in the cache. Attempting to load the tablespace with space id 1.
2017-10-24 16:40:56 2b48  InnoDB: Operating system error number 3 in a file operation.
InnoDB: The error means the system cannot find the path specified.
2017-10-24 16:40:56 11080 [ERROR] InnoDB: Could not find a valid tablespace file for 'mysql/innodb_table_stats'. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting-datadict.html for how to resolve the issue.
2017-10-24 16:40:56 8772 [Note] InnoDB:  Percona XtraDB (http://www.percona.com) 5.6.36-82.0 started; log sequence number 1835127
2017-10-24 16:40:56 10092 [Note] InnoDB: Dumping buffer pool(s) not yet started
2017-10-24 16:40:56 8772 [Note] Plugin 'FEEDBACK' is disabled.
2017-10-24 16:40:56 8772 [ERROR] Could not open mysql.plugin table. Some plugins may be not loaded
2017-10-24 16:40:56 8772 [ERROR] Can't open and lock privilege tables: Table 'mysql.servers' doesn't exist
2017-10-24 16:40:56 8772 [Note] Server socket created on IP: '::'.
2017-10-24 16:40:56 8772 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist

Answer 1

16M 对于 innodb_buffer_pool_size 来说太小了。你有多少内存？好吧，现在将 buffer_pool 设置为 200M(在 my.cnf 中)。