Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

mysql access deined

ÎÒµÄϵͳÊÇubuntu6.06£¬×î½üÐÂ×°ºÃµÄmysqlÔÚ½øÈëmysql¹¤¾ßʱ£¬×ÜÊÇÓдíÎóÌáʾ:
# mysql -uroot -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
ʹÓÃÍøÉϽéÉܵķ½·¨ÐÞ¸ÄrootÓû§µÄÃÜÂ룺
# mysqladmin -uroot -p password 'newpassword'
Enter password:
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: YES)'
ÏÖÔÚÖÕÓÚ±»ÎÒÕÒµ½Á˽â¾ö·½·¨£¬ÈçÏ£¨ÇëÏȲâÊÔ·½·¨Èý£¬Ð»Ð»£¡£©£º
·½·¨Ò»£º
# /etc/init.d/mysql stop
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
# mysql -u root mysql
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
mysql> FLUSH PRIVILEGES;
mysql> quit
# /etc/init.d/mysql restart
# mysql -uroot -p
Enter password: <ÊäÈëÐÂÉèµÄÃÜÂënewpassword>
mysql>
·½·¨¶þ£º
Ö±½ÓʹÓÃ/etc/mysql/debian.cnfÎļþÖÐ[client]½ÚÌṩµÄÓû§ÃûºÍÃÜÂë:
# mysql -udebian-sys-maint -p
Enter password: <ÊäÈë[client]½ÚµÄÃÜÂë>
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
mysql> FLUSH PRIVILEGES;
mysql> quit
# mysql -uroot -p
Enter password: <ÊäÈëÐÂÉèµÄÃÜÂënewpassword>
mysql>
·½·¨Èý£º
ÕâÖÖ·½·¨ÎÒûÓнøÐйý²âÊÔ£¬ÒòΪÎÒµÄrootÓû§Ä¬ÈÏÃÜÂëÒѾ­±»ÎÒÐ޸ĹýÁË£¬ÄÇλÓпղâÊÔһϣ¬°Ñ½á¹û¸æËßÎÒ£¬Ð»Ð»£¡£¡
# mysql -uroot -p
Enter password: <ÊäÈë/etc/mysql/debian.cnfÎļþÖÐ[client]½ÚÌṩµÄÃÜÂë>
ÖÁ´Ë£¬À§»ó¶àʱµÄÎÊÌâ½â¾öÁË£¡


Ïà¹ØÎĵµ£º

OracleµÄNVL()º¯ÊýºÍMySQLÖеÄIfNull()º¯Êý

MS SQL ÖеÄIsNull()º¯Êý£º
IsNull ( check_expression , replacement_expression )
check_expression: ¿ÉÒÔÊÇÈκÎÀàÐÍ,½«Òª¼ì²éµÄ±í´ïʽ  ²»Îª¿Õ£¬·µ»ØËü
replacement_expression: ÀàÐͱØÐëºÍcheck_expressionÏàͬ£¬check_expressionΪnull£¬·µ»ØËü
Õâ¸öº¯ÊýµÄ×÷ÓþÍÊÇ£ºÅжÏcheck_expressionÊÇ·ñΪ¿Õ£¬Îª¿Õ¾Í·µ» ......

±¸·ÝºÍ»¹Ô­SQL Server¼°Ñ¹ËõAccessÊý¾Ý¿â

*
 * ¹¦ÄÜ˵Ã÷:±¸·ÝºÍ»Ö¸´SQL ServerÊý¾Ý¿â
 * ×÷Õß: Áõ¹¦Ñ«;
 * °æ±¾:V0.1(C#2.0);ʱ¼ä:2007-1-1
 * µ±Ê¹ÓÃSQL Serverʱ,ÇëÒýÓà COM×é¼þÖеÄ,SQLDMO.dll×é¼þ
 * µ±Ê¹ÓÃAccessÖÐ,Çëä¯ÀÀÌí¼ÓÒýÓÃÒÔÏÂÁ½¸ödll
 *          ÒýÓÃC:/Progra ......

RedhatÏ Apache, php, mysqlµÄĬÈϰ²×°Â·¾¶

apache:
Èç¹û²ÉÓÃRPM°ü°²×°£¬°²×°Â·¾¶Ó¦ÔÚ /etc/httpdĿ¼ÏÂ
apacheÅäÖÃÎļþ:/etc/httpd/conf/httpd.conf
ApacheÄ£¿é·¾¶£º/usr/sbin/apachectl
webĿ¼:/var/www/html
Èç¹û²ÉÓÃÔ´´úÂë°²×°£¬Ò»°ãĬÈϰ²×°ÔÚ/usr/local/apache2Ŀ¼ÏÂ
php:
Èç¹û²ÉÓÃRPM°ü°²×°£¬°²×°Â·¾¶Ó¦ÔÚ /etc/Ŀ¼ÏÂ
phpµÄÅäÖÃÎļþ:/etc/php.ini ......

MySQL³ÌÐòÆÊÎö£¨Profiling£©

ÎÒÃǽ«ÒªÏêϸµÄ½²µ½MySQLµÄÆÊÎö(Profiling),ÒòΪËüºÜÉÙÒÀÀµÓÚÄãµÄÓ¦Óá£Ó¦ÓúͷþÎñÆ÷¼¶±ðµÄÆÊÎöÓеÄʱºò¶¼ÊÇÓбØÒªµÄ¡£ËäȻӦÓü¶±ðµÄÆÊÎö¿ÉÒÔ¸øÄãÕû¸öÓ¦ÓÃÐÔÄܵÄ×ÜÀ¿¡££¬µ«ÊǶÔMySQLµÄÆÊÎöÌṩÁËÐÅÏ¢ÊÇ·þÎñÆ÷¼¶±ðËùÌṩ²»Á˵ġ£±ÈÈ磬¶ÔPHP´úÂë½øÐÐÆÊÎö²»»áÏÔʾMySQLÓжàÉÙÐÐÓï¾äÖ´ÐÐÁË¡£
 
ÓëÓ¦ÓÃÆÊÎöÒ»Ñù£¬Ä¿±êÊÇ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ