xampp下mysql不能启动，错误日志如下

Question

2014-08-23 16:02:45 9692 [Note] Plugin 'FEDERATED' is disabled.
2014-08-23 16:02:45 257c 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.
2014-08-23 16:02:45 9692 [Note] InnoDB: Using atomics to ref count buffer pool pages
2014-08-23 16:02:45 9692 [Note] InnoDB: The InnoDB memory heap is disabled
2014-08-23 16:02:45 9692 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2014-08-23 16:02:45 9692 [Note] InnoDB: Compressed tables use zlib 1.2.3
2014-08-23 16:02:45 9692 [Note] InnoDB: Not using CPU crc32 instructions
2014-08-23 16:02:45 9692 [Note] InnoDB: Initializing buffer pool, size = 16.0M
2014-08-23 16:02:45 9692 [Note] InnoDB: Completed initialization of buffer pool
2014-08-23 16:02:45 9692 [Note] InnoDB: Highest supported file format is Barracuda.
2014-08-23 16:02:45 9692 [Note] InnoDB: 128 rollback segment(s) are active.
2014-08-23 16:02:46 9692 [Note] InnoDB: Waiting for purge to start
2014-08-23 16:02:46 9692 [Note] InnoDB: 5.6.16 started; log sequence number 1600664
2014-08-23 16:02:46 9692 [Note] Server hostname (bind-address): '*'; port: 3306
2014-08-23 16:02:46 9692 [Note] IPv6 is available.
2014-08-23 16:02:46 9692 [Note]   - '::' resolves to '::';
2014-08-23 16:02:46 9692 [Note] Server socket created on IP: '::'.
2014-08-23 16:02:46 9692 [Warning] InnoDB: Cannot open table mysql/slave_master_info from the internal data dictionary of InnoDB though the .frm file for the table exists. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting.html for how you can resolve the problem.
2014-08-23 16:02:46 9692 [Warning] Info table is not ready to be used. Table 'mysql.slave_master_info' cannot be opened.
2014-08-23 16:02:46 9692 [Warning] InnoDB: Cannot open table mysql/slave_worker_info from the internal data dictionary of InnoDB though the .frm file for the table exists. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting.html for how you can resolve the problem.
2014-08-23 16:02:46 9692 [Warning] InnoDB: Cannot open table mysql/slave_relay_log_info from the internal data dictionary of InnoDB though the .frm file for the table exists. See http://dev.mysql.com/doc/refman/5.6/en/innodb-troubleshooting.html for how you can resolve the problem.
2014-08-23 16:02:46 9692 [Warning] Info table is not ready to be used. Table 'mysql.slave_relay_log_info' cannot be opened.
2014-08-23 16:02:46 9692 [ERROR] Event Scheduler: Failed to open table mysql.event
2014-08-23 16:02:46 9692 [ERROR] Event Scheduler: Error while loading from disk.
2014-08-23 16:02:46 9692 [Note] Event Scheduler: Purging the queue. 0 events
2014-08-23 16:02:46 9692 [ERROR] Aborting

2014-08-23 16:02:46 9692 [Note] Binlog end
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'partition'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_METRICS'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_CMPMEM'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_CMP'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_LOCKS'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'INNODB_TRX'
2014-08-23 16:02:46 9692 [Note] Shutting down plugin 'InnoDB'
2014-08-23 16:02:46 9692 [Note] InnoDB: FTS optimize thread exiting.
2014-08-23 16:02:46 9692 [Note] InnoDB: Starting shutdown...
2014-08-23 16:02:48 9692 [Note] InnoDB: Shutdown completed; log sequence number 1600674
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'BLACKHOLE'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'ARCHIVE'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'MRG_MYISAM'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'MyISAM'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'MEMORY'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'CSV'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'sha256_password'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'mysql_old_password'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'mysql_native_password'
2014-08-23 16:02:48 9692 [Note] Shutting down plugin 'binlog'
2014-08-23 16:02:48 9692 [Note] h:\xampp\xampp\mysql\bin\mysqld.exe: Shutdown complete

mysql running3秒后自动停止，apache端口设为8081,443和3306端口都未被占用。apache能够正常使用，mysql不能启动

Answer 1

我以前在win7装xmapp也遇到过，原因是是以前机器上装过一个mysql，与xampp的mysql发生了冲突。想启动xampp的mysql必须在服务中关掉以前装的mysql服务。

Answer 2

两个mysql数据库冲突了