MySQL組態檔my.ini的使用解讀

# CLIENT SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by MySQL client applications.
# Note that only client applications shipped by MySQL are guaranteed
# to read this section. If you want your own MySQL client program to
# honor these values, you need to specify it as an option during the
# MySQL client library initialization.
#
[client]

port=3306

[mysql]

default-character-set=gb2312

# SERVER SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by the MySQL Server. Make sure that
# you have installed the server correctly (see above) so it reads this
# file.
#
[mysqld]

# The TCP/IP Port the MySQL Server will listen on
port=3306


#Path to installation directory. All paths are usually resolved relative to this.
basedir="E:/Java/Mysql/"

#Path to the database root
datadir="C:/ProgramData/MySQL/MySQL Server 5.5/Data/"

# The default character set that will be used when a new schema or table is
# created and no character set is defined
character-set-server=gb2312

# The default storage engine that will be used when create new tables when
default-storage-engine=INNODB

# Set the SQL mode to strict
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

# The maximum amount of concurrent sessions the MySQL server will
# allow. One of these connections will be reserved for a user with
# SUPER privileges to allow the administrator to login even if the
# connection limit has been reached.
max_connections=100

# Query cache is used to cache SELECT results and later return them
# without actual executing the same query once again. Having the query
# cache enabled may result in significant speed improvements, if your
# have a lot of identical queries and rarely changing tables. See the
# "Qcache_lowmem_prunes" status variable to check if the current value
# is high enough for your load.
# Note: In case your tables change very often or if your queries are
# textually different every time, the query cache may result in a
# slowdown instead of a performance improvement.
query_cache_size=0

# The number of open tables for all threads. Increasing this value
# increases the number of file descriptors that mysqld requires.
# Therefore you have to make sure to set the amount of open files
# allowed to at least 4096 in the variable "open-files-limit" in
# section [mysqld_safe]
table_cache=256

# Maximum size for internal (in-memory) temporary tables. If a table
# grows larger than this value, it is automatically converted to disk
# based table This limitation is for a single table. There can be many
# of them.
tmp_table_size=35M


# How many threads we should keep in a cache for reuse. When a client
# disconnects, the client's threads are put in the cache if there aren't
# more than thread_cache_size threads from before.  This greatly reduces
# the amount of thread creations needed if you have a lot of new
# connections. (Normally this doesn't give a notable performance
# improvement if you have a good thread implementation.)
thread_cache_size=8

#*** MyISAM Specific options

# The maximum size of the temporary file MySQL is allowed to use while
# recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE.
# If the file-size would be bigger than this, the index will be created
# through the key cache (which is slower).
myisam_max_sort_file_size=100G

# If the temporary file used for fast index creation would be bigger
# than using the key cache by the amount specified here, then prefer the
# key cache method.  This is mainly used to force long character keys in
# large tables to use the slower key cache method to create the index.
myisam_sort_buffer_size=69M

# Size of the Key Buffer, used to cache index blocks for MyISAM tables.
# Do not set it larger than 30% of your available memory, as some memory
# is also required by the OS to cache rows. Even if you're not using
# MyISAM tables, you should still set it to 8-64M as it will also be
# used for internal temporary disk tables.
key_buffer_size=55M

# Size of the buffer used for doing full table scans of MyISAM tables.
# Allocated per thread, if a full scan is needed.
read_buffer_size=64K
read_rnd_buffer_size=256K

# This buffer is allocated when MySQL needs to rebuild the index in
# REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE
# into an empty table. It is allocated per thread so be careful with
# large settings.
sort_buffer_size=256K

#*** 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=3M

# 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=1

# 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=2M

# 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.
innodb_buffer_pool_size=107M

# 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=54M

# 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=18

[client]  
port=3306  

[mysql]  
default-character-set=gbk  

[mysqld]
port = 3306
socket = /tmp/mysql.sock
# 設定mysql的安裝目錄
basedir=F:\Hzq Soft\MySql Server 51GA
# 設定mysql資料庫的資料的存放目錄，必須是data，或者是\xxx-data
datadir=F:\Hzq Soft\MySql Server 51GA\data
#innodb_log_arch_dir 預設datadir
#innodb_log_group_home_dir  預設datadir
# 設定mysql伺服器的字元集，預設編碼
default-character-set=utf8

#連線數的作業系統監聽佇列數量，如果經常出現「拒絕連線」錯誤可適當增加此值
back_log = 50
#不使用接聽TCP / IP埠方法，mysqld通過命名管道連線
#skip-networking
# 最大連線數量
max_connections = 90
#開啟表的執行緒數量限定，最大4096，除非用mysqld_safe開啟限制
table_open_cache = 2048
#MySql 服務接收針對每個程序最大查詢包大小
max_allowed_packet = 16M
#作用於SQL查詢單筆處理使用的記憶體快取，如果一筆操作的二進位制資料超過了限定大小，將會在磁碟上開闢空間處理，一般設為 1-2M即可，預設1M
binlog_cache_size = 2M
#單個記憶體表的最大值限定
max_heap_table_size = 64M
#為每個執行緒分配的排序緩衝大小
sort_buffer_size = 8M
#join 連表操作的緩衝大小,根據實際業務來設定，預設8M
join_buffer_size = 32M
#操作多少個離開連線的執行緒的快取
thread_cache_size = 8
#並行執行緒數量，預設為8，可適當增加到2倍以內。如果有多個CPU可以乘 上CPU的數量。雙核CPU可以乘 上當前最核數再乘 上70%-85%
thread_concurrency = 16
#專用於具體SQL的快取，如果提交的查詢與幾次中的某查詢相同，並且在query快取中存在，則直接返回快取中的結果。
query_cache_size = 64M
#對應上一條設定，當查詢的結果超過下面設定的大小時，將不會趣入到上面設定的快取區中，避免了一個大的結果佔據大量快取。
query_cache_limit = 2M
#設定加全文檢索中的最小單詞長度。
#ft_min_word_len = 4
#CREATE TABLE 語句的預設表型別，如果不自己指定型別，則使用下行的型別
default-storage-engine = InnoDB
#執行緒堆疊大小，mysql說它自己用的堆疊大小不超過64K。這個值可適當設高一點（在RCA的專案中都是共用同一個資料庫連線的），預設192K
thread_stack = 800K
#設定事務處理的級別,預設 REPEATABLE-READ，一般用它就即可，以下二行按順序對應，
#可讀寫未提交的資料，建立未提交的資料副本讀寫，未提交之前可讀不可寫，只允許序列序列招行事務。
# READ-UNCOMMITTED, READ-COMMITTED, REPEATABLE-READ, SERIALIZABLE
transaction_isolation = REPEATABLE-READ
#單一記憶體臨時表在記憶體中的大小，超過此值自動轉換到磁碟操作
tmp_table_size = 64M
#啟動二進位制紀錄檔功能，可通過它實現時間點恢復最新的備份
#log-bin=mysql-bin
#二進位制紀錄檔格式，對就上一條，-建議混合格式
#binlog_format=mixed
#轉換查詢為緩慢查詢
slow_query_log
#對應上一條，如果一個查詢超過了下條設定的時間則執行上一條。
long_query_time = 2
#自定義主機ID識別符，用於主從或多伺服器之間識別，為 一個 int 型別
server-id = 1
#一般用來快取MyISAM表的主鍵，也用於臨時的磁碟錶快取主鍵，上面多次出現臨時磁碟表，所以就算不用MyISAM也最好為其設定一個不小的值，預設32M
key_buffer_size = 56M
#全表掃描MyISAM表時的快取，每個執行緒擁有下行的大小。
read_buffer_size = 2M
#排序操作時與磁碟之間的快取，分到每個執行緒，預設16M
read_rnd_buffer_size = 16M
#MyISAM使用特殊樹形進行批次插入時的快取，如insert ... values(..)(..)(..)
bulk_insert_buffer_size = 64M
#MyISAM索引檔案的最大限定，
myisam_max_sort_file_size = 12G
#如果一個myisam表有一個以上的索引， MyISAM可以使用一個以上執行緒來排序並行它們。較耗硬體資源，如果你的環境不錯，可以增加此值。
myisam_repair_threads = 2
#自動檢查和修復無法正確關閉MyISAM表。
myisam_recover
# *** INNODB Specific options ***
#開啟下條將會禁用 INNODB
#skip-innodb
#一般不用設定或者說設了也沒多大用，InnoDB會自己與作業系統互動管理其附加記憶體池所使用InnoDB的儲存資料的大小
innodb_additional_mem_pool_size = 16M
#innodb整體緩衝池大小，不宜過大，設為本地記憶體的 50%-75% 比較合適,在本機開發過程中可以設得較小一點如 64M,256M
innodb_buffer_pool_size = 256M
#InnoDB的資料儲存在一個或多個資料檔案組成的表空間
innodb_data_file_path = ibdata1:10M:autoextend
#用於非同步IO操作的執行緒數量，預設為 4 ，可適當提高
innodb_file_io_threads = 8
#執行緒數內允許的InnoDB核心,不宜太高
innodb_thread_concurrency = 14
#InnoDB的事務紀錄檔快存行為,預設為 1，為0可減輕磁碟I/0操作，還有以為2
innodb_flush_log_at_trx_commit = 1
#InnoDB的用於的緩衝紀錄檔資料的大小
innodb_log_buffer_size = 16M
#紀錄檔檔案，可設定為25%-90%的總體快取大小，預設 256M. 修改此項要先刪除datadirib_logfileXXX
innodb_log_file_size = 256M
#紀錄檔組數量，預設為3
innodb_log_files_in_group = 3
#InnoDB的紀錄檔檔案位置。預設是MySQL的datadir
#innodb_log_group_home_dir
#InnoDB最大允許的髒頁緩衝池的百分比，預設90
innodb_max_dirty_pages_pct = 90
#事務死鎖超時設定
innodb_lock_wait_timeout = 120

[client]
port = 3306
socket = /tmp/mysql.sock
# 設定mysql使用者端的字元集
default-character-set=utf8

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

# Only allow UPDATEs and DELETEs that use keys.
#safe-updates

[WinMySQLAdmin]
# 指定mysql服務啟動啟動的檔案
Server=F:\myweb\MySql Server\bin\mysqld.exe