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 ×îÐÂÎÄÕ : mysql

Mysql innodb Îóɾ³ýÊý¾Ý¿âÊÇ·ñ¿É»Ö¸´

¿ÉÒÔ£¬µ«ÊÇÍêÈ«»Ö¸´ËùÓÐµÄ±í²»Ò»¶¨¿ÉÒÔ
¹¤¾ß: innodb-recovery
Official Website: http://code.google.com/p/innodb-tools/
This set of tools could be used to check InnoDB
tablespaces and to recover data from damaged tablespaces or from
dropped/truncated InnoDB tables.
Õâ¸ö¹¤¾ßÓÃÀ´¼ì²éInnoDB¿Õ¼ä±íºÍ»Ö¸´ÓÉÓÚdrop ÒÔ¼°truncateÒý·¢µÄË𻵿ռä±íµÄÊý¾Ý¿âÃÅ
´Ë¹¤¾ßʹÓÃÐèÒª°²×°PerlµÄһЩ²å¼þ£¬ÓÐ:
DBI
Mysql::DBD
»Ö¸´Ç°Ìá,ÌáÁËÒÔÉϵIJå¼þÍ⣬Èç¹ûÔÚʹÓÃʱÓб¨ÉÙ²å¼þ£¬ÔòÐèÒªÕÒµ½ÉٵIJå¼þ£¬ÔÙ°²×°
ÁíÍâ, »Ö¸´Êý¾ÝµÄÇ°ÌáÊÇ£¬Êý¾Ý¿âʹÓõÄÊÇinnodbÒýÇ棬µ±ÓÃ'DROP DATABASE DBNAME'ºó£¬Ã»ÓÐÔÙ×öÆäËü²Ù×÷£¬±£Ö¤ibdata1ÎļþµÄÍêÕûÐÔ¼°²»±»ºóÐøдÊý¾ÝÆÆ»µ
Ö´Ðлָ´µÄ¹ý³ÌÖУ¬ÓÐÒ»²½ÊÇÐèҪעÒâµÄ£¬¾ÍÊÇ"Recovery steps: Preparing the code for recovery"
ĬÈÏÉú³ÉµÄ±í½á¹¹ÖеÄһЩÁÐÊôÐԵĸñʽÊDz»¾«È·µÄ£¬ÄãÐèÒª¾«È·ÕâЩÊôÐÔ£¬»Ö¸´µÄ¸ÅÂʲŻáÌá¸ß
######################
Note that this is a translation of the table format into what InnoDB Tools use internally as a C program.
You may need to edit this file later on, to forc ......

jdbc Óë mysqlÁ¬½Ó

JDBCÁ¬½ÓMySQL
JDBCÁ¬½ÓMySQL
¼ÓÔؼ°×¢²áJDBCÇý¶¯³ÌÐò
Class.forName("com.mysql.jdbc.Driver");
Class.forName("com.mysql.jdbc.Driver").newInstance();
JDBC URL ¶¨ÒåÇý¶¯³ÌÐòÓëÊý¾ÝÔ´Ö®¼äµÄÁ¬½Ó
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MySQLµÄJDBC URL¸ñʽ£º
jdbc:mysql//[hostname][:port]/[dbname][?param1=value1][&param2=value2]….
 
ʾÀý£ºjdbc:mysql://localhost:3306/sample_db?user=root&password=your_password
 
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user                       Óû§Ãû
password                  ÃÜÂë
autoReconnect                  Áª»úʧ°Ü£¬ÊÇ·ñÖØÐÂÁª»ú£¨true/false£©
maxReconnect     ......

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¡¡ 4¡¢°²×°Íê³Éºó£¬Mysql server instance config wizardÓ¦¸ÃÊÇÆô¶¯²»Á˵ģ¬ÏÂÃæµÄ¹¤×÷¾ÍÊÇΪÁ˽â¾öÕâ¸öÎÊÌâµÄ£¬ÒòΪÕâÊÇÅäÖÃMysqlµÄΨһ;¾¶¡£
¡¡ 5¡¢ÏÂÔØResource HackerµÃ¼òÌåÖÐÎÄ°æ(Èç¹ûÄã¿´µÄ¶®Ó¢ÎÄ£¬ÄǾÍÖ±½ÓÏÂÔ­°æµÄ)¡£
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¡¡ 7¡¢´ò¿ªMySQLInstanceConfig.exe (ÔÚ°²裝 MySQL µÄbin Ŀ¼ÖÐ) £¬¿ÉÒÔÓÃÊó±êÖ±½Ó°ÑexeµÈ×ÊÔ´ÎļþÍϵ½Resource Hacker´°ÌåÉÏÃæ¡£
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JavaÁ¬½ÓmysqlÊý¾Ý¿â

Ê×ÏÈ£¬´ò¿ªMySQL Query Browser£¬ÔÚµ±Ç°TestÊý¾Ý¿âÏ£¬Ð½¨Ò»¸östudent±í£¬ÓÐÈçÏÂÊôÐÔ£º
create table student (name varchar(10),id int(2),sex varchar(10));
 
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package com.JDBC;
import java.sql.*;
public class JDBCTest {
public static void main(String[] args) {String driver = "com.mysql.jdbc.Driver"; // Çý¶¯³ÌÐòÃû
String url = "jdbc:mysql://localhost/test"; // URLÖ¸ÏòÒª·ÃÎʵÄÊý¾Ý¿âÃûscutcs
String user = "root"; // MySQLÅäÖÃʱµÄÓû§Ãû
String password = "123456"; // MySQLÅäÖÃʱµÄÃÜÂë
try {
Class.forName(driver); // ¼ÓÔØÇý¶¯³ÌÐò
Connection conn = DriverManager.getConnection(url, user, password); // Á¬ÐøÊý¾Ý¿â
if (!conn.isClosed())
System.out.println("Succeeded connecting to the Database!"); // ÑéÖ¤ÊÇ·ñÁ¬½Ó³É¹¦
Statement statement = conn.createStatement(); // statementÓÃÀ´Ö´ÐÐSQLÓï¾ä
String sql = "select * from student"; // ÒªÖ´ÐеÄSQLÓï¾ä
ResultSet rs = statement.executeQuery(sql); // ½á¹û¼¯
System.out.println("-----------------------------------------");
Syste ......

JavaÁ¬½ÓmysqlÊý¾Ý¿â

Ê×ÏÈ£¬´ò¿ªMySQL Query Browser£¬ÔÚµ±Ç°TestÊý¾Ý¿âÏ£¬Ð½¨Ò»¸östudent±í£¬ÓÐÈçÏÂÊôÐÔ£º
create table student (name varchar(10),id int(2),sex varchar(10));
 
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package com.JDBC;
import java.sql.*;
public class JDBCTest {
public static void main(String[] args) {String driver = "com.mysql.jdbc.Driver"; // Çý¶¯³ÌÐòÃû
String url = "jdbc:mysql://localhost/test"; // URLÖ¸ÏòÒª·ÃÎʵÄÊý¾Ý¿âÃûscutcs
String user = "root"; // MySQLÅäÖÃʱµÄÓû§Ãû
String password = "123456"; // MySQLÅäÖÃʱµÄÃÜÂë
try {
Class.forName(driver); // ¼ÓÔØÇý¶¯³ÌÐò
Connection conn = DriverManager.getConnection(url, user, password); // Á¬ÐøÊý¾Ý¿â
if (!conn.isClosed())
System.out.println("Succeeded connecting to the Database!"); // ÑéÖ¤ÊÇ·ñÁ¬½Ó³É¹¦
Statement statement = conn.createStatement(); // statementÓÃÀ´Ö´ÐÐSQLÓï¾ä
String sql = "select * from student"; // ÒªÖ´ÐеÄSQLÓï¾ä
ResultSet rs = statement.executeQuery(sql); // ½á¹û¼¯
System.out.println("-----------------------------------------");
Syste ......

mysqlÓÅ»¯£º ÄÚ´æ±íºÍÁÙʱ±í


mysqlÓÅ»¯£º ÄÚ´æ±íºÍÁÙʱ±í
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    ÕâÑùÒ»ÏëÄÚ´æ±í²»ÊÇÒ²ÊÇ´æÔÚÔÚÄÚ´æÖÐÂð£¬ÄÇôËûºÍÁÙʱ±íÓÐʲôÇø±ð£¿ËûÃǵÄËÙ¶ÈÊÇʲôÑù×Ó£¿
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The MEMORY storage engine creates tables with contents that are stored in memory. Formerly, these were known as HEAP tables. MEMORY is the preferred term, although HEAP remains supported for backward compatibility.
Each MEMORY table is associated with one disk file. The filename begins with the table name and has an extension of .frm to indicate that it stores the table definition.
ÓÉ´Ë¿ÉÒÔ¿´³öÀ´ÄÚ´æ±í»á°Ñ± ......

MySQLÒýÇæ¼ò½é

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³µÊÖÄܸù¾Ý²»Í¬µÄ·¿ö£¬µØÐÎËæÊÖ¸ü»»ÓëÖ®×îÊÊÒ˵ÄÒýÇ棬ÄÇôËûÃǽ«´´ÔìÆæ¼£¡£È»¶øÄ¿Ç°ËûÃÇ»¹×ö²»µ½ÄÇÑù±ã½ÝµÄ¸ü»»ÒýÇ棬µ«ÊÇÎÒÃÇÈ´¿ÉÒÔ£¡
     Ëùν֪¼ºÖª±Ë·½¿É°ÙÕ½²»´ù£¬ÒªÏ뽫ËüÃÇ·¢»Óµ½¼«Ö£¬Ê×ÏÈÎÒÃÇÓ¦¸ÃÀ´ÈÏʶһÏÂMySQLÌṩ¸øÎÒÃǵÄÕ⼸ÖÖÒýÇæ¡£
    
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