mysql CPU¹ý¸ß
mysql ÔÚ²éѯһÌõÓï¾äʱ Èôij¸ö×Ö¶ÎÈç content ÓÐ22ÍòµÄÖÐÎÄ£¬²éѯʱ»áʹCPUÕ¼Óôï100%£¬¸ÄÈçºÎÓÅ»¯£¿£¿
ÊÇÒ»Ìõ¼Ç¼ÖÐcontent×Ö¶ÎÓÐ22Íò¸öÖÐÎÄ×Ö£¬²»ÄÜÓÅ»¯Ã´£¿·þÎñÆ÷²ÎÊýÉÏ£¿ÀýÈçtmp-table_size
ÓÐÎÊÌâ...
22ÍòµÄÖÐÎÄ£¿
Õâ¶«Î÷·ÅÊý¾Ý¿âÀï³É´óÎÊÌ⣬½¨Òé´æÎªÎļþ£¬Êý¾Ý¿âÄÚ·ÅÎļþµØÖ·¡¡
È«ÎÄË÷Òý
Ïà¹ØÎÊ´ð£º
ÎÒµÄMysql ʹÓõÄʱºò ÓÃdos½¨Á¢µÄÊý¾Ý±í ÔÚdosÖÐÄÜÏÔʾ³öÖÐÎÄ
µ«ÊÇÔÚ ÆäËûµÄ¿ÉÊÓÒ³Ãæ ºÍÍøÒ³Öж¼ÏÔʾÂÒÂë ÈçºÎ½â¾ö£¿
ÔÚmysql¿ØÖÆÌ¨:show variables like 'char%';Ìù½á¹û³öÀ´¿´¿´¡£
mysqlÃüÁîÐÐģʽÏÂ: ......
ÎÒµÄmysqlÔõôûÓа취дÈëÖÐÎÄÊý¾Ý£¿Ö»ÒªÊÇÊý¾ÝдÈëÊý¾Ý¿âʱ ¾Í»á±ä³ÉÈý¸öÎʺŠ£¿Çë½Ì¸ßÈË£¡£¡
linux? ÔõôдÈëµÄ
ÔÚmysqlÖÐÖ´ÐÐ show variables like 'character%'Ìù½á¹û³öÀ´¡£
ÔÚ°²×°MYSLQʱ½«Êý¾Ý¿âµÄ×Ö· ......
ÏÈÉÏ´íÎó
ÎÞ·¨Áª½ÓÊý¾Ý¿â
java.sql.SQLException: Before start of result set
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910)
at com.mysql.jdbc.ResultSet.checkRowPos(ResultSet.java: ......
CREATE DATABASE ADDRESSLIST;
USE ADDRESSLIST;
DROP TABLE IF EXISTS FRIEND;
CREATE TABLE FRIEND
(FRIEND_ID INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY ,
FRIEND_NAME VARCHAR(20) NOT N ......
±¾ÈËÏëÖªµÀMySqlÔõôÔÚÊý¾Ý°²×°µÄʱºò¾ÍÄÜ×Ô¶¯È¥Éú³ÉһЩĬÈϵÄÓû§ºÍȨÏÞÄØ£¨Óû§£ºClient£¬ÃÜÂ룺12345£©£¿
±ÈÈçÊDz»ÊÇÐèҪд×Ô¶¯°²×°½Å±¾°¢£¿µÈµÈ£¬Ð»Ð»£¡
MySQLµÄ±ê×¼°²×°£¬»òÕ߷ǰ²×°°æ±¾Öв»»á°ïÄã´´½¨ÕâЩ ......