Error: log file .\ib_logfile0 is of different size 零 56623104 bytes

Error: log file .\ib_logfile0 is of different size 0 56623104 bytes

SQL code

  
120827 14:08:19 [Note] Plugin 'FEDERATED' is disabled.
120827 14:08:19 InnoDB: The InnoDB memory heap is disabled
120827 14:08:19 InnoDB: Mutexes and rw_locks use Windows interlocked functions
120827 14:08:19 InnoDB: Compressed tables use zlib 1.2.3
120827 14:08:19 InnoDB: Initializing buffer pool, size = 4.0G
120827 14:08:20 InnoDB: Completed initialization of buffer pool
InnoDB: Error: log file .\ib_logfile0 is of different size 0 56623104 bytes
InnoDB: than specified in the .cnf file 0 268435456 bytes!
120827 14:08:20 [ERROR] Plugin 'InnoDB' init function returned error.
120827 14:08:20 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
120827 14:08:20 [ERROR] Unknown/unsupported storage engine: INNODB
120827 14:08:20 [ERROR] Aborting

120827 14:08:20 [Note] C:\Program Files\MySQL\MySQL Server 5.5\bin\mysqld: Shutdown complete

我的my.ini配置如下，我的电脑是64bit win7

SQL code

  

#*** INNODB Specific options ***


# Use this option if you have a MySQL server with InnoDB support enabled
# but you do not plan to use it. This will save memory and disk space
# and speed up some things.
#skip-innodb

# Additional memory pool that is used by InnoDB to store metadata
# information.  If InnoDB requires more memory for this purpose it will
# start to allocate it from the OS.  As this is fast enough on most
# recent operating systems, you normally do not need to change this
# value. SHOW INNODB STATUS will display the current amount used.
innodb_additional_mem_pool_size=20M

# If set to 1, InnoDB will flush (fsync) the transaction logs to the
# disk at each commit, which offers full ACID behavior. If you are
# willing to compromise this safety, and you are running small
# transactions, you may set this to 0 or 2 to reduce disk I/O to the
# logs. Value 0 means that the log is only written to the log file and
# the log file flushed to disk approximately once per second. Value 2
# means the log is written to the log file at each commit, but the log
# file is only flushed to disk approximately once per second.
innodb_flush_log_at_trx_commit=2

# The size of the buffer InnoDB uses for buffering log data. As soon as
# it is full, InnoDB will have to flush it to disk. As it is flushed
# once per second anyway, it does not make sense to have it very large
# (even with long transactions).
innodb_log_buffer_size=4M

# InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and
# row data. The bigger you set this the less disk I/O is needed to
# access data in tables. On a dedicated database server you may set this
# parameter up to 80% of the machine physical memory size. Do not set it
# too large, though, because competition of the physical memory may
# cause paging in the operating system.  Note that on 32bit systems you
# might be limited to 2-3.5G of user level memory per process, so do not
# set it too high.
# memlock
innodb_buffer_pool_size=4G

# Size of each log file in a log group. You should set the combined size
# of log files to about 25%-100% of your buffer pool size to avoid
# unneeded buffer pool flush activity on log file overwrite. However,
# note that a larger logfile size will increase the time needed for the
# recovery process.

innodb_log_file_size=256M
# innodb_log_files_in_group = 2

# Number of threads allowed inside the InnoDB kernel. The optimal value
# depends highly on the application, hardware as well as the OS
# scheduler properties. A too high value may lead to thread thrashing.
innodb_thread_concurrency=10
innodb_lock_wait_timeout=500

请先说明你是什么原因出现这个问题的