Question

xampp下的mysql启动不起来，这是错误日志，怎么解决？

121021 14:40:13 [Note] Plugin 'FEDERATED' is disabled.
121021 14:40:13 InnoDB: The InnoDB memory heap is disabled
121021 14:40:14 InnoDB: Mutexes and rw_locks use Windows interlocked functions
121021 14:40:14 InnoDB: Compressed tables use zlib 1.2.3
121021 14:40:14 InnoDB: Initializing buffer pool, size = 16.0M
121021 14:40:14 InnoDB: Completed initialization of buffer pool
121021 14:40:15 InnoDB: highest supported file format is Barracuda.
121021 14:40:16 InnoDB: Waiting for the background threads to start
121021 14:40:17 InnoDB: 1.1.8 started; log sequence number 1595675
121021 14:40:17 [ERROR] c:\xampp\mysql\bin\mysqld.exe: unknown variable 'max_used_connections=96'
121021 14:40:17 [ERROR] Aborting

121021 14:40:17 InnoDB: Starting shutdown...
121021 14:40:18 InnoDB: Shutdown completed; log sequence number 1595675
121021 14:40:18 [Note] c:\xampp\mysql\bin\mysqld.exe: Shutdown complete

Answer 1

mysql的配置文件中出现了不支持的选项（unknown variable）:
max_used_connections，应该是 max_user_connections