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mysql常见参数设置

2011-08-02 16:22 162 查看

mysql参数配置文件为：%mysql_home%\my.ini或my.cnf，以上讨论的内容匀可以my文件中找到。

1、mysql连接端口，默认为3306

[client]

port=3306

[mysqld]

port=3306

2、mysql字符集，支持字符集包括

mysql> SHOW CHARACTER SET;
+----------+-----------------------------+---------------------+
| Charset  | Description                 | Default collation   |
+----------+-----------------------------+---------------------+
| big5     | Big5 Traditional Chinese    | big5_chinese_ci     |
| dec8     | DEC West European           | dec8_swedish_ci     |
| cp850    | DOS West European           | cp850_general_ci    |
| hp8      | HP West European            | hp8_english_ci      |
| koi8r    | KOI8-R Relcom Russian       | koi8r_general_ci    |
| latin1   | cp1252 West European        | latin1_swedish_ci   |
| latin2   | ISO 8859-2 Central European | latin2_general_ci   |
| swe7     | 7bit Swedish                | swe7_swedish_ci     |
| ascii    | US ASCII                    | ascii_general_ci    |
| ujis     | EUC-JP Japanese             | ujis_japanese_ci    |
| sjis     | Shift-JIS Japanese          | sjis_japanese_ci    |
| hebrew   | ISO 8859-8 Hebrew           | hebrew_general_ci   |
| tis620   | TIS620 Thai                 | tis620_thai_ci      |
| euckr    | EUC-KR Korean               | euckr_korean_ci     |
| koi8u    | KOI8-U Ukrainian            | koi8u_general_ci    |
| gb2312   | GB2312 Simplified Chinese   | gb2312_chinese_ci   |
| greek    | ISO 8859-7 Greek            | greek_general_ci    |
| cp1250   | Windows Central European    | cp1250_general_ci   |
| gbk      | GBK Simplified Chinese      | gbk_chinese_ci      |
| latin5   | ISO 8859-9 Turkish          | latin5_turkish_ci   |
| armscii8 | ARMSCII-8 Armenian          | armscii8_general_ci |
| utf8     | UTF-8 Unicode               | utf8_general_ci     |
| ucs2     | UCS-2 Unicode               | ucs2_general_ci     |
| cp866    | DOS Russian                 | cp866_general_ci    |
| keybcs2  | DOS Kamenicky Czech-Slovak  | keybcs2_general_ci  |
| macce    | Mac Central European        | macce_general_ci    |
| macroman | Mac West European           | macroman_general_ci |
| cp852    | DOS Central European        | cp852_general_ci    |
| latin7   | ISO 8859-13 Baltic          | latin7_general_ci   |
| cp1251   | Windows Cyrillic            | cp1251_general_ci   |
| cp1256   | Windows Arabic              | cp1256_general_ci   |
| cp1257   | Windows Baltic              | cp1257_general_ci   |
| binary   | Binary pseudo charset       | binary              |
| geostd8  | GEOSTD8 Georgian            | geostd8_general_ci  |
| cp932    | SJIS for Windows Japanese   | cp932_japanese_ci   |
| eucjpms  | UJIS for Windows Japanese   | eucjpms_japanese_ci |
+----------+-----------------------------+---------------------+

[mysql]

default-character-set=UTF8

[mysqld]

default-character-set=UTF8

3、文件

(1)mysql_home

[mysqld]

basedir="D:/Program Files (x86)/MySQL/MySQL Server 5.1/"

(2)数据文件

#Path to the database root

datadir="%mysql_home%/Data/"

4、存储引擎，支持MyISAM、MEMORY和InnoDB

[mysqld]

default-storage-engine=INNODB

5、SQL模式，在此特别说明下

STRICT_TRANS_TABLES

，严格数据检查，关于SQL模式的具体内容，请查看官方说明

http://dev.mysql.com/doc/refman/5.5/en/server-sql-mode.html

sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

6、最大连接数

max_connections=100

7、缓存

query_cache_size=0

table_cache=256

tmp_table_size=17M

thread_cache_size=8

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

MyISAM 特别配置

myisam_max_sort_file_size=100G

myisam_sort_buffer_size=33M

key_buffer_size=24M

read_buffer_size=64K

read_rnd_buffer_size=256K

sort_buffer_size=256K

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－

INNODB 特别配置

innodb_additional_mem_pool_size=2M

innodb_flush_log_at_trx_commit=1

innodb_log_buffer_size=1M

innodb_buffer_pool_size=45M

innodb_log_file_size=23M

innodb_thread_concurrency=10

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