{"id":1172,"date":"2016-08-31T21:53:54","date_gmt":"2016-08-31T13:53:54","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=1172"},"modified":"2016-08-31T21:54:49","modified_gmt":"2016-08-31T13:54:49","slug":"mysql-%e5%b8%b8%e8%a7%81%e9%94%99%e8%af%af%e5%88%86%e6%9e%90%e4%b8%8e%e8%a7%a3%e5%86%b3%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/uncategorized\/mysql-%e5%b8%b8%e8%a7%81%e9%94%99%e8%af%af%e5%88%86%e6%9e%90%e4%b8%8e%e8%a7%a3%e5%86%b3%e6%96%b9%e6%b3%95\/","title":{"rendered":"MySQL \u5e38\u89c1\u9519\u8bef\u5206\u6790\u4e0e\u89e3\u51b3\u65b9\u6cd5"},"content":{"rendered":"

\u00a0\u4e00\u3001Can’t connect to MySQL server on ‘localhost'(10061)?<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u4e0d\u80fd\u8fde\u63a5\u5230localhost \u4e0a\u7684mysql?\u5206\u6790\uff1a\u8fd9\u8bf4\u660e\u201clocalhost\u201d\u8ba1\u7b97\u673a\u662f\u5b58\u5728\u7684\uff0c\u4f46\u5728\u8fd9\u53f0\u673a\u5668\u4e0a\u5374\u6ca1\u63d0\u4f9bMySQL\u670d\u52a1\u3002?\u9700\u8981\u542f\u52a8\u8fd9\u53f0\u673a\u5668\u4e0a\u7684MySQL\u670d\u52a1,\u5982 \u679c\u673a\u5b50\u8d1f\u8f7d\u592a\u9ad8\u6ca1\u7a7a\u76f8\u5e94\u8bf7\u6c42\u4e5f\u4f1a\u4ea7\u751f\u8fd9\u4e2a\u9519\u8bef\u3002?\u89e3\u51b3:\u65e2\u7136\u6ca1\u6709\u542f\u52a8\u90a3\u5c31\u53bb\u542f\u52a8\u8fd9\u53f0\u673a\u5b50\u7684mysql\u3002\u5982\u679c\u542f\u52a8\u4e0d\u6210\u529f\uff0c\u591a\u6570\u662f\u56e0\u4e3a\u4f60\u7684my.ini\u914d\u7f6e\u7684 \u6709\u95ee\u9898\u3002\u91cd\u65b0\u914d\u7f6e\u5176\u5373\u53ef\u3002?\u5982\u679c\u89c9\u5f97mysql\u8d1f\u8f7d\u5f02\u5e38\uff0c\u53ef\u4ee5\u5230mysql\/bin \u7684\u76ee\u5f55\u4e0b\u6267\u884cmysqladmin-uroot -p123 processlist\u6765\u67e5\u770bmysql\u5f53\u524d\u7684\u8fdb\u7a0b\u3002<\/p>\n

\u4e8c\u3001Unknown MySQL ServerHost ‘localhosadst’ (11001)<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u672a\u77e5\u7684MySQL\u670d\u52a1\u5668localhosadst?\u5206\u6790\uff1a\u670d\u52a1\u5668localhosasdst \u4e0d\u5b58\u5728\u3002\u6216\u8005\u6839\u672c\u65e0\u6cd5\u8fde\u63a5?\u89e3\u51b3\uff1a\u4ed4\u7ec6\u68c0\u67e5\u81ea\u5df1\u8bba\u575b\u4e0b\u9762\u7684.\/config.inc.php\u627e\u5230$dbhost\u91cd\u65b0\u8bbe\u7f6e\u4e3a\u6b63\u786e\u7684mysql \u670d\u52a1\u5668\u5730\u5740\u3002
\n\u00a0\u00a0\u00a0 <\/strong><\/p>\n

\u4e09\u3001Access denied for user:’roota@localhost’ (Using password: YES)<\/strong><\/p>\n

?\u7ffb\u8bd1\uff1a\u7528\u6237roota \u8bbf\u95ee localhost \u88ab\u62d2\u7edd\uff08\u6ca1\u6709\u5141\u8bb8\u901a\u8fc7\uff09?\u5206\u6790\uff1a\u9020\u6210\u8fd9\u4e2a\u9519\u8bef\u4e00\u822c\u6570\u636e\u5e93\u7528\u6237\u540d\u548c\u5bc6\u7801\u76f8\u5bf9mysql\u670d\u52a1\u5668\u4e0d\u6b63\u786e?\u89e3\u51b3\uff1a\u4ed4\u7ec6\u68c0\u67e5\u81ea\u5df1\u8bba\u575b\u4e0b\u9762\u7684 .\/config.inc.php \u627e\u5230$dbuser\u3001$dbpw\u6838\u5b9e\u540e\u91cd\u65b0\u8bbe\u7f6e\u4fdd\u5b58\u5373\u53ef\u3002
\n\u56db\u3001Access denied for user:’red@localhost’ to database ‘newbbs’?<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u7528\u6237 red\u5728localhost \u670d\u52a1\u5668\u4e0a\u6ca1\u6709\u6743\u9650\u64cd\u4f5c\u6570\u636e\u5e93newbbs?\u5206\u6790\uff1a\u8fd9\u4e2a\u63d0\u793a\u548c\u95ee\u9898\u4e09\u662f\u4e0d\u540c\u7684\u3002\u90a3\u4e2a\u662f\u5728\u8fde\u63a5\u6570\u636e\u5e93\u7684\u65f6\u5019\u5c31\u88ab\u963b\u6b62\u4e86\uff0c\u800c\u8fd9\u4e2a\u9519\u8bef\u662f\u5728\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u64cd\u4f5c\u65f6\u5f15\u8d77 \u7684\u3002\u6bd4\u5982\u5728selectupdate\u7b49\u7b49\u3002\u8fd9\u4e2a\u662f\u56e0\u4e3a\u8be5\u7528\u6237\u6ca1\u6709\u64cd\u4f5c\u6570\u636e\u5e93\u76f8\u5e94\u7684\u6743\u529b\u3002\u6bd4\u5982select \u8fd9\u4e2a\u64cd\u4f5c\u5728mysql.user.Select_priv\u91cc\u8bb0\u5f55 Y \u53ef\u4ee5\u64cd\u4f5cN \u4e0d\u53ef\u4ee5\u64cd\u4f5c\u3002?\u89e3\u51b3\uff1a\u5982\u679c\u662f\u81ea\u5df1\u7684\u72ec\u7acb\u4e3b\u673a\u90a3\u4e48\u66f4\u65b0mysql.user \u7684\u76f8\u5e94\u7528\u6237\u8bb0\u5f55\uff0c\u6bd4\u5982\u8fd9\u91cc\u8981\u66f4\u65b0\u7684\u7528\u6237\u4e3ared \u3002\u6216\u8005\u76f4\u63a5\u4fee\u6539.\/config.inc.php \u4e3a\u5176\u914d\u7f6e\u4e00\u4e2a\u5177\u6709\u5bf9\u6570\u636e\u5e93\u64cd\u4f5c\u6743\u9650\u7684\u7528\u6237?\u6216\u8005\u901a\u8fc7\u5982\u4e0b\u7684\u547d\u4ee4\u6765\u66f4\u65b0\u6388\u6743grantall privileges on dbname.* to ‘user’@’localhost’ identified by ‘password’?\u63d0\u793a\uff1a\u66f4\u65b0\u4e86mysql\u5e93\u4e2d\u7684\u8bb0\u5f55\u4e00\u5b9a\u8981\u91cd\u542fmysql\u670d\u52a1\u5668\u624d\u80fd\u4f7f\u66f4\u65b0\u751f\u6548?FLUSH PRIVILEGES;
\n\u4e94\u3001No Database Selected<\/strong><\/p>\n

?\u7ffb\u8bd1\uff1a\u6ca1\u6709\u6570\u636e\u5e93\u88ab\u9009\u62e9\u4e0a?\u5206\u6790\uff1a\u4ea7\u751f\u7684\u539f\u56e0\u6709\u4e24\u79cd?config.inc.php \u91cc\u9762$dbname\u8bbe\u7f6e\u7684\u4e0d\u5bf9\u3002\u81f4\u4f7f\u6570\u636e\u5e93\u6839\u672c\u4e0d\u5b58\u5728\uff0c\u6240\u4ee5\u5728$db->select_db($dbname); \u65f6\u8fd4\u56de\u4e86false?\u548c\u4e0a\u9762\u95ee\u9898\u56db\u662f\u4e00\u6837\u7684\uff0c\u6570\u636e\u5e93\u7528\u6237\u6ca1\u6709select\u6743\u9650\uff0c\u540c\u6837\u4f1a\u5bfc\u81f4\u8fd9\u6837\u7684\u9519\u8bef\u3002\u5f53\u4f60\u53d1\u73b0config.inc.php\u7684\u8bbe\u7f6e\u6ca1\u6709\u4efb \u4f55\u95ee\u9898\uff0c\u4f46\u8fd8\u662f\u63d0\u793a\u8fd9\u4e2a\u9519\u8bef\uff0c\u90a3\u4e00\u5b9a\u5c31\u662f\u8fd9\u79cd\u60c5\u51b5\u4e86\u3002?\u89e3\u51b3\uff1a\u5bf9\u75c7\u4e0b\u836f?\u6253\u5f00config.inc.php\u627e\u5230$dbname\u6838\u5b9e\u91cd\u65b0\u914d\u7f6e\u5e76\u4fdd\u5b58?\u540c\u95ee\u9898 \u56db\u7684\u89e3\u51b3\u65b9\u6cd5
\n\u516d\u3001Can’t open file:’xxx_forums.MYI’. (errno: 145)<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u4e0d\u80fd\u6253\u5f00xxx_forums.MYI?\u95ee\u9898\u5206\u6790\uff1a?\u8fd9\u79cd\u60c5\u51b5\u662f\u4e0d\u80fd\u6253\u5f00cdb_forums.MYI \u9020\u6210\u7684\uff0c\u5f15\u8d77\u8fd9\u79cd\u60c5\u51b5\u53ef\u80fd\u7684\u539f\u56e0\u6709\uff1a?1\u3001\u670d\u52a1\u5668\u975e\u6b63\u5e38\u5173\u673a\uff0c\u6570\u636e\u5e93\u6240\u5728\u7a7a\u95f4\u5df2\u6ee1\uff0c\u6216\u4e00\u4e9b\u5176\u5b83\u672a\u77e5\u7684\u539f\u56e0\uff0c\u5bf9\u6570\u636e\u5e93\u8868\u9020\u6210\u4e86\u635f\u574f\u3002?2\u3001\u7c7b unix \u64cd\u4f5c\u7cfb\u7edf\u4e0b\u76f4\u63a5\u5c06\u6570\u636e\u5e93\u6587\u4ef6\u62f7\u8d1d\u79fb\u52a8\u4f1a\u56e0\u4e3a\u6587\u4ef6\u7684\u5c5e\u7ec4\u95ee\u9898\u800c\u4ea7\u751f\u8fd9\u4e2a\u9519\u8bef\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1\u3001\u4fee\u590d\u6570\u636e\u8868?\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u4e24\u79cd\u65b9\u5f0f\u4fee\u590d\u6570\u636e\u8868\uff1a\uff08\u7b2c\u4e00\u79cd\u65b9 \u6cd5\u4ec5\u9002\u5408\u72ec\u7acb\u4e3b\u673a\u7528\u6237\uff09?1\uff09\u4f7f\u7528 myisamchk \uff0cMySQL\u81ea\u5e26\u4e86\u4e13\u95e8\u7528\u6237\u6570\u636e\u8868\u68c0\u67e5\u548c\u4fee\u590d\u7684\u5de5\u5177 \u2014\u2014 myisamchk \u3002\u66f4\u6539\u5f53\u524d\u76ee\u5f55\u5230MySQL\/bin \u4e0b\u9762\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u53ea\u6709\u5728\u8fd9\u4e2a\u4e0b\u9762\u624d\u80fd\u8fd0\u884c myisamchk \u547d\u4ee4\u3002\u5e38\u7528\u7684\u4fee\u590d\u547d\u4ee4\u4e3a\uff1amyisamchk-r \u6570\u636e\u6587\u4ef6\u76ee\u5f55\/\u6570\u636e\u8868\u540d.MYI\uff1b?2\uff09\u901a\u8fc7 phpMyAdmin \u4fee\u590d\uff0cphpMyAdmin \u5e26\u6709\u4fee\u590d\u6570\u636e\u8868\u7684\u529f\u80fd\uff0c\u8fdb\u5165\u5230\u67d0\u4e00\u4e2a\u8868\u4e2d\u540e\uff0c\u70b9\u51fb\u201c\u64cd\u4f5c\u201d\uff0c\u5728\u4e0b\u65b9\u7684\u201c\u8868\u7ef4\u62a4\u201d\u4e2d\u70b9\u51fb\u201c\u4fee\u590d\u8868\u201d\u5373\u53ef\u3002?\u6ce8\u610f\uff1a\u4ee5\u4e0a\u4e24\u79cd\u4fee\u590d\u65b9\u5f0f\u5728\u6267\u884c\u524d\u4e00\u5b9a\u8981\u5907\u4efd\u6570\u636e \u5e93\u3002?2\u3001\u4fee\u6539\u6587\u4ef6\u7684\u5c5e\u7ec4\uff08\u4ec5\u9002\u5408\u72ec\u7acb\u4e3b\u673a\u7528\u6237\uff09?1\uff09\u590d\u5236\u6570\u636e\u5e93\u6587\u4ef6\u7684\u8fc7\u7a0b\u4e2d\u6ca1\u6709\u5c06\u6570\u636e\u5e93\u6587\u4ef6\u8bbe\u7f6e\u4e3aMySQL \u8fd0\u884c\u7684\u5e10\u53f7\u53ef\u8bfb\u5199\uff08\u4e00\u822c\u9002\u7528\u4e8e Linux\u548c FreeBSD \u7528\u6237\uff09\u3002
\n\u4e03\u3001Table’test.xxx_sessions’ doesn’t exist<\/strong><\/p>\n

?\u7ffb\u8bd1\uff1axxxxx\u8868\u4e0d\u5b58\u5728?\u5206\u6790\uff1a\u5728\u6267\u884csql\u8bed\u53e5\u65f6\u6ca1\u6709\u627e\u5230\u8868\uff0c\u6bd4\u5982\uff1aSELECT * FROMxxx_members WHERE uid=’XX’ \u8fd9\u91cc\u5982\u679c\u8868xxx_members\u4e0d\u5b58\u5728\u4e8e$dbname\u5e93\u91cc\uff0c\u90a3\u4e48\u5c31\u4f1a\u63d0\u793a\u8fd9\u4e2a\u9519\u8bef\u3002\u5177\u4f53\u53ef\u5206\u4e3a\u4ee5\u4e0b\u4e09\u79cd\u60c5\u51b5\u6765\u8ba8\u8bba\uff1a?\u5b89\u88c5\u63d2\u4ef6\u6216\u8005hack\u65f6\u4fee\u6539\u4e86\u7a0b \u5e8f\u6587\u4ef6\uff0c\u800c\u5fd8\u8bb0\u4e86\u5bf9\u6570\u636e\u5e93\u4f5c\u76f8\u5e94\u7684\u5347\u7ea7\u3002?\u540e\u53f0\u4f7f\u7528\u4e86\u4e0d\u5b8c\u5168\u5907\u4efd\uff0c\u5bfc\u5165\u6570\u636e\u65f6\u6ca1\u6709\u5bfc\u5165\u5230\u5df2\u7ecf\u5b89\u88c5\u4e86\u76f8\u5e94\u7248\u672c\u7684\u8bba\u575b\u7684\u6570\u636e\u5e93\u4e2d\u3002?\u89e3\u51b3\uff1a \u540c\u6837\u5bf9\u75c7\u4e0b\u836f\uff0c\u4e0d\u540c\u7684\u539f\u56e0\u4e0d\u540c\u7684\u5904\u7406\u65b9\u6cd5\u3002?\u4ed4\u7ec6\u5bf9\u7167\u63d2\u4ef6\u4f5c\u8005\u63d0\u4f9b\u7684\u5b89\u88c5\u8bf4\u660e\uff0c\u628a\u9057\u6f0f\u7684\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u8865\u4e0a\uff0c\u5982\u679c\u4ecd\u7136\u4e0d\u80fd\u89e3\u51b3\u95ee\u9898\uff0c\u90a3\u4e48\u5e94\u8be5\u6000\u7591\u8be5\u63d2\u4ef6\u7684 \u53ef\u7528\u6027\u4e86\u3002\u53bb\u54a8\u8be2\u4e00\u4e0b\u63d2\u4ef6\u4f5c\u8005\uff0c\u6216\u8005\u5c06\u5176\u5378\u8f7d\u3002?\u4e0d\u8981\u5f20\u51a0\u674e\u6234\uff0c\u591a\u5927\u7684\u811a\u5c31\u7a7f\u591a\u5927\u7684\u978b\u3002\u603b\u4e4b\u4f7f\u5f97\u7a0b\u5e8f\u6587\u4ef6\u548c\u6570\u636e\u5e93\u914d\u5957\u5373\u53ef.
\n\u516b\u3001Unknown column’column_name’ in ‘field list’<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u672a\u77e5\u7684\u5b57\u6bb5\u540dcolumn_name?\u5206\u6790\uff1a\u5728\u6267\u884csql\u8bed\u53e5\u662f\u51fa\u73b0\u4e86\u6307\u5b9a\u8868\u4e2d\u6ca1\u6709\u7684\u5b57\u6bb5\u540d\u79f0\uff0c\u5c31\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u3002\u5177\u4f53\u5bfc\u81f4\u7684\u539f\u56e0\u53ef\u5206\u4e3a\u4ee5\u4e0b\u4e24\u79cd? \u5b89\u88c5\u63d2\u4ef6\u6216\u8005hack\u65f6\u4fee\u6539\u4e86\u7a0b\u5e8f\u6587\u4ef6\uff0c\u800c\u5fd8\u8bb0\u4e86\u5bf9\u6570\u636e\u5e93\u4f5c\u76f8\u5e94\u7684\u5347\u7ea7\u3002?\u7a0b\u5e8f\u6587\u4ef6\u548c\u6570\u636e\u5e93\u4e0d\u914d\u5957\uff0c\u6bd4\u5982d2.5\u7684\u6570\u636e\u5e93\u914d\u7f6e\u7ed9d4.1\u7684\u7a0b\u5e8f\u6765\u7528\u80af\u5b9a\u4f1a \u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u3002?\u89e3\u51b3\uff1a \u5bfc\u81f4\u7684\u539f\u56e0\u548c\u95ee\u9898\u516b\u76841\u548c 3\u662f\u76f8\u540c\u7684\uff0c\u6240\u4ee5\u89e3\u51b3\u65b9\u6cd5\u4e5f\u4e00\u6837\u3002
\n\u4e5d\u3001You have an error in yourSQL syntax<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u6709\u4e00\u4e2a\u8bed\u6cd5\u9519\u8bef\u5728\u4f60\u7684sql\u4e2d?\u5206\u6790\uff1a\u8bba\u575b\u6807\u51c6\u7684\u7a0b\u5e8f\u662f\u6ca1\u6709sql\u8bed\u6cd5\u9519\u8bef\u7684\u3002\u6240\u4ee5\u9020\u6210\u8fd9\u4e2a\u9519\u8bef\u7684\u539f\u56e0\u4e00\u822c\u5c31\u4e24\u7c7b?\u5b89\u88c5\u63d2\u4ef6\u6216\u64c5\u81ea\u4fee\u6539\u7a0b\u5e8f\u3002?\u4e0d\u540c \u7684\u6570\u636e\u5e93\u7248\u672c\u6570\u636e\u5e93\u5bfc\u51fa\u5bfc\u5165\uff0c\u6bd4\u5982MySQL4.1\u7684\u6570\u636e\u5728\u5bfc\u51fa\u7684\u8bed\u53e5\u5305\u542b\u4e86MySQL4.0\u6ca1\u6709\u7684\u529f\u80fd\uff0c\u50cf\u5b57\u7b26\u96c6\u7684\u8bbe\u5b9a\uff0c\u8fd9\u65f6\u5982\u679c\u5c06\u8fd9\u4e9bsql\u5bfc\u5165\u5230 MySQL4.0\u7684\u65f6\u5019\u5c31\u4f1a\u4ea7\u751fsql\u8bed\u6cd5\u9519\u8bef\u3002?\u89e3\u51b3\uff1a?\u4ed4\u7ec6\u68c0\u67e5\u770b\u5230\u5e95\u662f\u54ea\u91cc\u7684\u9519\u8bef\uff0c\u5c06\u5176\u4fee\u6b63\uff0c\u5b9e\u5728\u4e0d\u884c\u5c31\u7528\u6807\u51c6\u7a0b\u5e8f\u628a\u51fa\u9519\u7684\u7a0b\u5e8f\u66ff\u6362\u3002?\u5728\u6570\u636e\u5e93\u5907 \u4efd\u7684\u65f6\u5019\u8981\u7559\u610f\uff0c\u5982\u679c\u4e0d\u6253\u7b97\u5012\u5165\u5230\u5176\u4ed6\u7248\u672c\u7684mysql\u4e2d\u5219\u4e0d\u7528\u7279\u6b8a\u8003\u8651\uff0c\u53cd\u4e4b\u8981\u7279\u6b8a\u7684\u8bbe\u5b9a\u3002\u4f7f\u7528DZ4.1\u7684\u540e\u53f0\u6570\u636e\u5907\u4efd\uff0c\u53ef\u4ee5\u6309\u7167\u63d0\u793a\u53bb\u8bbe\u5b9a\u60f3\u8981\u7684\u683c \u5f0f\u3002\u72ec\u7acb\u4e3b\u673a\u7684\u4e5f\u53ef\u4ee5\u5728\u5230\u5904\u7684\u65f6\u5019\u5c06\u5176\u5bfc\u51fa\u4e3amysql4.0\u7684\u683c\u5f0f\u3002?mysqldump -uroot -p–default-character-set=latin1 –set-charset=gbk –skip-opt databse >test.sql
\n\u5341\u3001Duplicate entry ‘xxx’for key 1<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u63d2\u5165 xxx\u4f7f\u7d22\u5f151\u91cd\u590d?\u5206\u6790\uff1a\u7d22\u5f15\u5982\u679c\u662fprimaryunique\u8fd9\u4e24\u4e24\u79cd\uff0c\u90a3\u4e48\u6570\u636e\u8868\u7684\u6570\u636e\u5bf9\u5e94\u7684\u8fd9\u4e2a\u5b57\u6bb5\u5c31\u5fc5\u987b\u4fdd\u8bc1\u5176\u6bcf\u6761\u8bb0\u5f55\u7684\u552f\u4e00\u6027\u3002\u5426\u5219\u5c31\u4f1a\u4ea7\u751f \u8fd9\u4e2a\u9519\u8bef\u3002?\u4e00\u822c\u53d1\u751f\u5728\u5bf9\u6570\u636e\u5e93\u5199\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u4f8b\u5982Discuz!4.1\u8bba\u575b\u7a0b\u5e8f\u8981\u6c42\u6240\u6709\u4f1a\u5458\u7684\u7528\u6237\u540dusername\u5fc5\u987b\u552f\u4e00\uff0c\u5373username\u7684\u7d22 \u5f15\u662funique\uff0c\u8fd9\u65f6\u5982\u679c\u5f3a\u884c\u5f80cdb_members\u8868\u91cc\u63d2\u5165\u4e00\u4e2a\u5df2\u6709\u7684username\u7684\u8bb0\u5f55\u5c31\u4f1a\u53d1\u4e0a\u8fd9\u4e2a\u9519\u8bef\uff0c\u6216\u8005\u5c06\u4e00\u6761\u8bb0\u5f55\u7684username \u66f4\u65b0 \u4e3a\u5df2\u6709\u7684\u4e00\u4e2ausername\u3002?\u6539\u53d8\u8868\u7ed3\u6784\u7684\u65f6\u5019\u4e5f\u6709\u53ef\u80fd\u5bfc\u81f4\u8fd9\u4e2a\u9519\u8bef\u3002\u4f8b\u5982 Discuz!4.0\u8bba\u575b\u7684\u6570\u636e\u5e93\u4e2dcdb_members.username\u7684\u7d22\u5f15\u7c7b\u578b\u662findex\u8fd9\u4e2a\u65f6\u5019\u662f\u5141\u8bb8\u6709\u76f8\u540cusername\u7684\u8bb0\u5f55\u5b58\u5728 \u7684\uff0c\u5728\u5347\u7ea7\u52304.1\u7684\u65f6\u5019\uff0c\u56e0\u4e3a\u8981\u5c06username\u7684\u7d22\u5f15\u7531\u539f\u6765\u7684index\u53d8 \u4e3aunique\u3002\u5982\u679c\u8fd9\u65f6cdb_members\u91cc\u5b58\u5728\u6709\u76f8\u540c\u7684username\u7684\u8bb0\u5f55\uff0c\u90a3\u4e48\u5c31\u4f1a\u5f15\u53d1\u8fd9\u4e2a\u9519\u8bef\u3002?\u5bfc\u51fa\u6570\u636e\u636e\u65f6\u6709\u65f6\u4f1a\u56e0\u4e3a\u4e00\u4e9b\u539f\u56e0\uff08\u4f5c\u8005 \u76ee\u524d\u8fd8\u4e0d\u6e05\u695a\uff09\u5bfc\u81f4\u540c\u4e00\u6761\u8bb0\u5f55\u88ab\u91cd\u590d\u5bfc\u51fa\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5907\u4efd\u6570\u636e\u5728\u5bfc\u5165\u7684\u65f6\u5019\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u662f\u5728\u6240\u96be\u514d\u7684\u4e86\u3002?\u4fee\u6539\u4e86auto_increment\u7684\u503c\uff0c\u81f4\u4f7f \u201c\u4e0b\u4e00\u4e2aAutoindex\u201d\u4e3a\u4e00\u6761\u5df2\u7ecf\u5b58\u5728\u7684\u8bb0\u5f55?\u89e3\u51b3\uff1a \u4e24\u79cd\u601d\u8def\uff0c\u4e00\u662f\u7834\u574f\u6389\u552f\u4e00\u6027\u7684\u7d22\u5f15\u3002\u4e8c\u662f\u628a\u91cd\u590d\u7684\u6570\u636e\u8bb0\u5f55\u5e72\u6389\uff0c\u53ea\u4fdd\u7559\u4e00\u6761\u3002\u5f88\u663e\u7136\u7b2c\u4e00\u79cd\u601d\u8def\u662f\u4e0d\u53ef\u53d6\u7684\u3002\u90a3\u4e48\u6309\u7167\u4e8c\u7684\u601d\u8def\u6211\u4eec\u5f97\u51fa\u4ee5\u4e0b\u51e0\u79cd\u89e3\u51b3\u65b9\u6cd5\uff0c\u5bf9 \u5e94\u4e0a\u9762\u7684i iiiii?\u7565?\u6309\u7167\u9519\u8bef\u63d0\u793a\u91cc\u7684\u4fe1\u606f\u5230\u6570\u636e\u5e93\u4e2d\u5c06\u91cd\u590d\u7684\u8bb0\u5f55\u5220\u9664\uff0c\u4ec5\u4fdd\u7559\u4e00\u6761\u5373\u53ef\u3002\u4e4b\u540e\u7ee7\u7eed\u6267\u884c\u5347\u7ea7\u64cd\u4f5c\u3002?\u8fd9\u79cd\u60c5\u51b5\u53d1\u751f\u7684\u6982\u7387\u5f88\u5c0f\uff0c\u53ef\u4ee5\u7528\u6587\u672c\u7f16\u8f91\u5668 \u6253\u5f00\u5907\u4efd\u6587\u6863\uff0c\u67e5\u627e\u91cd\u590d\u7684\u4fe1\u606f\u3002\u5c06\u5176\u591a\u4f59\u7684\u62ff\u6389\uff0c\u4ec5\u4fdd\u7559\u4e00\u6761\u5373\u53ef\u3002?\u67e5\u8be2\u51fa\u8868\u4e2dauto_increment\u6700\u5927\u7684\u4e00\u6761\u8bb0\u5f55\uff0c\u8bbe\u7f6e auto_incerment\u6bd4\u5176\u5927\u4e00\u5373\u53ef\u3002?PS\uff1arepaire table “\u8868\u540d\u201c\uff0c\u53ef\u4ee5\u6682\u65f6\u89e3\u51b3\u95ee\u9898\u3002
\n\u5341\u4e00\u3001 Duplicate key name’xxx’<\/strong><\/p>\n

?\u7ffb\u8bd1\uff1a\u7d22\u5f15\u540d\u91cd\u590d?\u5206\u6790\uff1a\u8981\u521b\u5efa\u7684\u7d22\u5f15\u5df2\u7ecf\u5b58\u5728\u4e86\uff0c\u5c31\u4f1a\u5f15\u53d1\u8fd9\u4e2a\u9519\u8bef\uff0c\u8fd9\u4e2a\u9519\u8bef\u591a\u53d1\u751f\u5728\u5347\u7ea7\u7684\u65f6\u5019\u3002\u53ef\u80fd\u662f\u5df2\u7ecf\u5347\u7ea7\u8fc7\u7684\uff0c\u91cd\u590d\u5347\u7ea7\u5f15\u8d77\u7684\u9519\u8bef\u3002\u4e5f\u6709\u53ef\u80fd \u662f\u4e4b\u524d\u7528\u6237\u64c5\u81ea\u52a0\u7684\u7d22\u5f15\uff0c\u521a\u597d\u4e0e\u5347\u7ea7\u6587\u4ef6\u4e2d\u7684\u6240\u4ee5\u76f8\u540c\u4e86\u3002?\u89e3\u51b3\uff1a \u770b\u770b\u5df2\u7ecf\u5b58\u5728\u7684\u7d22\u5f15\u548c\u8981\u6dfb\u52a0\u7684\u7d22\u5f15\u662f\u5426\u4e00\u6837\uff0c\u4e00\u6837\u7684\u8bdd\u53ef\u4ee5\u8df3\u8fc7\u8fd9\u6761sql\u8bed\u53e5\uff0c\u5982\u679c\u4e0d\u4e00\u6837\u90a3\u4e48\u73b0\u5220\u9664\u5df2\u5b58\u5728\u7684\u6240\u4ee5\uff0c\u4e4b\u540e\u518d\u6267\u884c\u3002
\n\u5341\u4e8c\u3001 Duplicate column name’xxx’<\/strong><\/p>\n

?\u7ffb\u8bd1\uff1a\u5b57\u6bb5\u540dxxx\u91cd\u590d?\u5206\u6790\uff1a\u6dfb\u52a0\u7684\u5b57\u6bb5xxx\u5df2\u7ecf\u5b58\u5728\uff0c\u591a\u53d1\u751f\u5728\u5347\u7ea7\u8fc7\u7a0b\u4e2d\uff0c\u4e0e\u95ee\u9898\u5341\u4e8c\u7684\u4ea7\u751f\u662f\u4e00\u6837\u7684\u3002?\u89e3\u51b3\uff1a \u770b\u4e00\u4e0b\u5df2\u7ecf\u5b58\u5728\u7684\u5b57\u6bb5\u662f\u5426\u548c\u5c06\u8981\u6dfb\u52a0\u7684\u5b57\u6bb5\u5c5e\u6027\u5b8c\u5168\u76f8\u540c\uff0c\u5982\u679c\u76f8\u540c\u5219\u53ef\u4ee5\u8df3\u8fc7\u4e0d\u6267\u884c\u8fd9\u53e5sql\uff0c\u5982\u679c\u4e0d\u4e00\u6837\u5219\u5220\u9664\u6389\u8fd9\u4e2a\u5b57\u6bb5\u3002\u4e4b\u540e\u7ee7\u7eed\u6267\u884c\u5347\u7ea7\u7a0b\u5e8f\u3002
\n\u5341\u4e09\u3001 Table ‘xxx’ alreadyexists<\/strong><\/p>\n

?\u7ffb\u8bd1\uff1a\u6570\u636e\u8868xxx\u5df2\u7ecf\u5b58\u5728?\u5206\u6790\uff1axxx\u8868\u5df2\u7ecf\u5b58\u5728\u4e8e\u5e93\u4e2d\uff0c\u518d\u6b21\u8bd5\u56fe\u521b\u5efa\u8fd9\u4e2a\u540d\u5b57\u7684\u8868\u5c31\u4f1a\u5f15\u53d1\u8fd9\u4e2a\u9519\u8bef\u3002\u540c\u6837\u591a\u53d1\u751f\u5728\u8bba\u575b\u7684\u5347\u7ea7\u4e2d\u3002\u7c7b\u4f3c\u4e8e\u95ee\u9898\u5341 \u4e8c\u3002?\u89e3\u51b3\uff1a \u770b\u770b\u5df2\u7ecf\u5b58\u5728\u7684\u8868\u662f\u5426\u548c\u5c06\u8981\u521b\u5efa\u7684\u8868\u5b8c\u5168\u4e00\u6837\uff0c\u4e00\u6837\u7684\u8bdd\u53ef\u4ee5\u8df3\u8fc7\u4e0d\u6267\u884c\u8fd9\u4e2asql\uff0c\u5426\u5219\u8bf7\u5c06\u5b58\u5728\u7684\u8868\u5148\u5220\u9664\uff0c\u4e4b\u540e\u7ee7\u7eed\u6267\u884c\u5347\u7ea7\u6587\u4ef6\u3002
\n\u5341\u56db\u3001 Can’t create database’xxx’. Database exists<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u4e0d\u80fd\u521b\u5efa\u6570\u636e\u5e93xxx\uff0c\u6570\u636e\u5e93\u5df2\u7ecf\u5b58\u5728?\u5206\u6790\uff1a\u4e00\u4e2amysql\u4e0b\u9762\u7684\u6570\u636e\u5e93\u540d\u79f0\u5fc5\u987b\u4fdd\u8bc1\u552f\u4e00\u6027\uff0c\u5426\u5219\u5c31\u4f1a\u6709\u8fd9\u4e2a\u9519\u8bef\u3002?\u89e3\u51b3\uff1a\u628a\u5df2\u7ecf\u5b58\u5728\u7684\u6570\u636e\u5e93\u6539\u540d\u6216\u8005\u628a\u5c06\u8981\u521b\u5efa\u7684\u6570\u636e\u5e93\u6539\u540d\uff0c\u603b\u4e4b\u4e0d\u8ba9\u4ed6\u4eec\u7684\u540d\u79f0\u51b2\u7a81\u3002
\n\u5341\u4e94\u3001 \u5c0f\u7ed3\uff08\u9488\u5bf9\u95ee\u989811\\12\\13\\14\\15\uff09<\/strong><\/p>\n

\u6b64\u7c7b\u95ee\u9898\u9519\u8bef\u63d0\u793a\u4e2d\u90fd\u6697\u85cf\u4e00\u4e2a\u5173\u952e\u8bcdduplicate\uff08\u91cd\u590d\uff09?\u90a3\u4e48\u5bf9\u4e8emysql\u6570\u636e\u5e93\u6765\u8bf4\u4ec0\u4e48\u4e1c\u897f\u662f\u4e0d\u80fd\u91cd\u590d\u7684\u5462\uff1f?\u6570\u636e\u5e93 database?\u540c\u4e00\u4e2a\u6570\u636e\u5e93\u4e0b\u6570\u636e\u8868table?\u540c\u4e00\u4e2a\u6570\u636e\u8868\u4e0b\u5b57\u6bb5 column?\u540c\u4e00\u4e2a\u6570\u636e\u8868\u4e0b\u7d22\u5f15 key?\u540c\u4e00\u4e2a\u6570\u636e\u8868\u5728\u7d22\u5f15\u552f\u4e00\uff08UNIQUEPRIMARY\uff09\u7684\u60c5\u51b5\u4e0b\u8bb0\u5f55\u4e2d\u7684\u8fd9\u4e9b\u5b57\u6bb5\u4e0d\u53ef\u4ee5\u91cd\u590d
\n\u5341\u516d\u3001Unknown system variable’NAMES’<\/strong><\/p>\n

?\u7ffb\u8bd1\uff1a\u672a\u77e5\u7684\u7cfb\u7edf\u53d8\u91cfNAMES?\u5206\u6790\uff1aMysql\u7248\u672c\u4e0d\u652f\u6301\u5b57\u7b26\u96c6\u8bbe\u5b9a\uff0c\u6b64\u65f6\u5f3a\u884c\u8bbe\u5b9a\u5b57\u7b26\u96c6\u5c31\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u3002?\u89e3\u51b3\uff1a \u5c06sql\u8bed\u53e5\u4e2d\u7684SET NAMES \u2018xxx’ \u8bed\u53e5\u53bb\u6389
\n\u5341\u4e03\u3001 Lost connection toMySQL server during query?<\/strong><\/p>\n

\u7ffb\u8bd1\uff1aMySQL\u670d\u52a1\u5668\u5931\u53bb\u8fde\u63a5\u5728\u67e5\u8be2\u671f\u95f4?\u5206\u6790\uff1a\u8fdc\u7a0b\u8fde\u63a5\u6570\u636e\u5e93\u662f\u6709\u65f6\u4f1a\u6709\u8fd9\u4e2a\u95ee\u9898\u3002MySQL\u670d\u52a1\u5668\u5728\u6267\u884c\u4e00\u6761sql\u8bed\u53e5\u7684\u65f6\u5019\u5931\u53bb\u4e86\u8fde\u63a5\u9020\u6210\u7684\u3002?\u89e3\u51b3\uff1a \u4e00\u822c\u4e0d\u9700\u8981\u600e\u4e48\u53bb\u5904\u7406\uff0c\u5982\u679c\u9891\u7e41\u7684\u51fa\u73b0\u90a3\u4e48\u8003\u8651\u6539\u5584\u786c\u4ef6\u73af\u5883\u3002
\n\u5341\u516b\u3001User ‘red’ has exceededthe ‘max_updates’ resource (current value: 500)<\/strong><\/p>\n

\u7ffb\u8bd1\uff1amsql\u7528\u6237red\u5df2\u7ecf\u8d85\u8fc7\u4e86’max_updates’\uff08\u6700\u5927\u66f4\u65b0\u6b21\u6570\uff09\uff0c’max_questions’\uff08\u6700\u5927\u67e5\u8be2\u6b21 \u6570\uff09\uff0c’max_connections’\uff08\u6700\u5927\u8fde\u63a5\u6570\uff09\uff0c\u5f53\u524d\u8bbe\u5b9a\u4e3a500?\u5206\u6790\uff1a\u5728mysql\u6570\u636e\u5e93\u7684\u4e0b\u6709\u4e00\u4e2a\u5e93\u4e3amysql\uff0c\u5b83\u5176\u4e2d\u6709\u4e00\u4e2a\u8868\u4e3a user\u8fd9\u91cc\u9762\u7684\u7eaa\u5f55\u6bcf\u4e00\u6761\u90fd\u5bf9\u5e94\u4e3a\u4e00\u4e2amysql\u7528\u6237\u7684\u6388\u6743\u3002\u5176\u4e2d\u5b57\u6bb5max_questions max_updates max_connections\u5206\u522b\u8bb0\u5f55\u7740\u6700\u5927\u67e5\u8be2\u6b21\u6570 \u6700\u5927\u66f4\u65b0\u6570 \u6700\u5927\u8fde\u63a5\u6570\uff0c\u5f53\u76ee\u524d\u7684\u4efb\u4f55\u4e00\u4e2a\u53c2\u6570\u5927\u4e8e\u4efb\u4f55\u4e00\u4e2a\u8bbe\u5b9a\u7684\u503c\u5c31\u4f1a\u4ea7\u751f\u8fd9\u4e2a\u9519\u8bef\u3002?\u89e3\u51b3\uff1a \u72ec\u7acb\u4e3b\u673a\u7528\u6237\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\u6388\u6743\u8868\u3002\u4fee\u6539\u5b8c\u4e4b\u540e\u91cd\u542fmysql\u6216\u8005\u8ddf\u65b0\u6388\u6743\u8868\uff0c\u8fdb\u5165mysql\u63d0\u793a\u7b26\u4e0b\u6267\u884c?FLUSH PRIVILEGES;?\u8bb0\u5f97\u540e\u9762\u8981\u6709\u5206\u53f7’;’?\u865a\u62df\u4e3b\u673a\u7684\u7528\u6237\u5982\u679c\u603b\u662f\u51fa\u73b0\u8fd9\u4e2a\u95ee\u9898\u53ef\u627e\u7a7a\u95f4\u5546\u534f\u5546\u89e3\u51b3\u3002
\n\u5341\u4e5d\u3001Too many connections(1040)\u94fe\u63a5\u8fc7\u591a?<\/strong><\/p>\n

\u7ffb\u8bd1\uff1a\u8fbe\u5230\u6700\u5927\u8fde\u63a5\u6570?\u95ee\u9898\u5206\u6790\uff1a?\u8fde\u63a5\u6570\u8d85\u8fc7\u4e86mysql\u8bbe\u7f6e\u7684\u503c\uff0c\u4e0emax_connections\u548cwait_timeout \u90fd\u6709\u5173\u7cfb\u3002wait_timeout\u7684\u503c\u8d8a\u5927\uff0c\u8fde\u63a5\u7684\u7a7a\u95f2\u7b49\u5f85\u5c31\u8d8a\u957f\uff0c\u8fd9\u6837\u5c31\u4f1a\u9020\u6210\u5f53\u524d\u8fde\u63a5\u6570\u8d8a\u5927?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.\u865a\u62df\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u7a7a\u95f4\u5546\u4f18\u5316 MySQL \u670d\u52a1\u5668\u7684\u914d\u7f6e\uff1b?2.\u72ec\u7acb\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u670d\u52a1\u5668\u7ba1\u7406\u5458\u4f18\u5316MySQL \u670d\u52a1\u5668\u7684\u914d\u7f6e\uff0c\u53ef\u53c2\u8003\uff1a?\u4fee\u6539MySQL \u914d\u7f6e\u6587\u4ef6 my.ini \u6216\u8005 my.cnf \u4e2d\u7684\u53c2\u6570\uff1a?max_connections= 1000?wait_timeout = 10?\u4fee\u6539\u540e\u91cd\u542f MySQL \uff0c\u5982\u679c\u7ecf\u5e38\u6027\u7684\u62a5\u6b64\u9519\u8bef\uff0c\u8bf7\u505a\u4e00\u4e0b\u670d\u52a1\u5668\u7684\u6574\u4f53\u4f18\u5316\u3002
\n\u4e8c\u5341\u3001There is no such grantdefined for user ‘%s’ on host ‘%s’?<\/strong><\/p>\n

\u9519\u8bef\u7f16\u53f7\uff1a1141?\u95ee\u9898\u5206\u6790\uff1a?MySQL\u5f53\u524d\u7528\u6237\u65e0\u6743\u8bbf\u95ee\u6570\u636e\u5e93\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1\u3001\u865a\u62df\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u7a7a\u95f4\u5546\uff0c\u786e\u8ba4\u7ed9\u4f60\u63d0\u4f9b\u7684\u5e10\u53f7\u662f\u5426\u6709\u6388\u6743\u6570\u636e\u5e93\u7684\u6743\u9650\u3002?2\u3001\u72ec\u7acb\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u670d\u52a1\u5668\u7ba1\u7406\u5458\uff0c\u786e\u8ba4\u7ed9\u60a8\u63d0\u4f9b\u7684\u6570\u636e\u5e93\u5e10\u53f7\u662f\u5426\u6709\u7ba1\u7406\u6b64\u6570\u636e\u5e93\u7684\u6743\u9650\u3002
\n\u4e8c\u5341\u4e00\u3001Error on rename of ‘%s’to ‘%s’ (errno: %d)?error.:1025?<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?\u8bf7\u68c0\u67e5\u4e00\u4e0b\u60a8\u7684\u7a0b\u5e8f\u662f\u5426\u6709\u4fee\u6539\u6570\u636e\u5e93\u8868\u540d\u7684\u8bed\u53e5\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.\u8bf7\u68c0\u67e5\u60a8\u7684\u7a0b\u5e8f\u4e2d\u54ea\u4e9b\u5730\u65b9\u9700\u8981\u4fee\u6539\u6570\u636e\u5e93\u8868\u540d\uff1b?2.\u5982\u679c\u60a8\u7684\u5b9e\u9645\u5e94\u7528\u786e\u5b9e\u9700\u8981\u4fee\u6539\u5230\u6570\u636e\u5e93\u8868\u540d\u7684\u8bdd\uff0c\u8bf7\u8054\u7cfb\u7a7a\u95f4\u5546\u6216\u8005\u670d\u52a1\u5668\u7ba1\u7406\u5458\u7ed9\u60a8\u5f00\u653e\u4fee\u6539\u5e93\u540d\u7684\u6743\u9650\u548c\u670d\u52a1\u5668\u672c\u8eab\u662f\u5426\u6b63\u5e38\u3002
\n\u4e8c\u5341\u4e8c\u3001Error reading file ‘%s'(errno: %d)?error.:1023?<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?\u6570\u636e\u5e93\u6587\u4ef6\u4e0d\u80fd\u88ab\u8bfb\u53d6\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.\u865a\u62df\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u7a7a\u95f4\u5546\u67e5\u770b\u6570\u636e\u5e93\u662f\u5426\u5b8c\u597d\u3002?2.\u72ec\u7acb\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u670d\u52a1\u5668\u7ba1\u7406\u5458\u68c0\u67e5\u4e00\u4e0b MySQL \u672c\u8eab\u662f\u5426\u6b63\u5e38\uff0c MySQL \u662f\u5426\u53ef\u4ee5\u8bfb\u53d6\u6587\u4ef6\uff0cLinux \u7528\u6237\u53ef\u4ee5\u68c0\u67e5\u4e00\u4e0bMySQL \u7684\u6570\u636e\u5e93\u6587\u4ef6\u7684\u5c5e\u4e3b\u662f\u5426\u6b63\u786e\u4ee5\u53ca\u672c\u8eab\u7684\u6587\u4ef6\u662f\u5426\u635f\u574f\u3002
\n\u4e8c\u5341\u4e09\u3001Host ‘*****’ is blockedbecause of many connection errors; unblock with ‘mysqladmin flush-hosts’?error.:1129<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?\u6570\u636e\u5e93\u51fa\u73b0\u5f02\u5e38\uff0c\u8bf7\u91cd\u542f\u6570\u636e\u5e93\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1. \u7531\u4e8e\u5b58\u5728\u5f88\u591a\u8fde\u63a5\u9519\u8bef\uff0c\u4e3b\u673a’****’\u88ab\u5c4f\u853d\uff0c\u865a\u62df\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u7a7a\u95f4\u5546\u5904\u7406\uff0c\u72ec\u7acb\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u670d\u52a1\u5668\u7ba1\u7406\u5458\uff0c\u5728MySQL \u7684\u547d\u4ee4\u63a7\u5236\u53f0\u4e0b\u6267\u884c’mysqladmin flush-hosts’\u89e3\u9664\u5c4f\u853d\u5373\u53ef\uff0c\u6216\u8005\u91cd\u542fMySQL \u6570\u636e\u5e93
\n\u4e8c\u5341\u56db\u3001dropping database (can’tdelete ‘%s’, errno: %d)?error.:1009?<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?\u4e0d\u80fd\u5220\u9664\u6570\u636e\u5e93\u6587\u4ef6\uff0c\u5bfc\u81f4\u5220\u9664\u6570\u636e\u5e93\u5931\u8d25\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.\u68c0\u67e5\u60a8\u4f7f\u7528\u7684\u6570\u636e\u5e93\u7ba1\u7406\u5e10\u53f7\u662f\u5426\u6709\u6743\u9650\u5220\u9664\u6570\u636e\u3002?2.\u68c0\u67e5\u6570\u636e\u5e93\u662f\u5426\u5b58\u5728\u3002
\n\u4e8c\u5341\u4e94\u3001Got error 28 from tablehandler?error.:1030?<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?\u6570\u636e\u5e93\u6240\u5728\u78c1\u76d8\u7a7a\u95f4\u5df2\u6ee1\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.\u865a\u62df\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u7a7a\u95f4\u5546\u589e\u52a0MySQL \u6240\u5728\u7684\u78c1\u76d8\u7a7a\u95f4\u6216\u8005\u6e05\u7406\u4e00\u4e9b\u65e0\u7528\u6587\u4ef6\uff1b?2.\u72ec\u7acb\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u670d\u52a1\u5668\u7ba1\u7406\u5458\u589e\u52a0MySQL \u6240\u5728\u7684\u78c1\u76d8\u7a7a\u95f4\u6216\u8005\u6e05\u7406\u4e00\u4e9b\u65e0\u7528\u6587\u4ef6
\n\u4e8c\u5341\u516d\u3001Can’t create a newthread; if you are not out of available memory, you can consult the manual fora possible OS-dependent bug\u3002?error.:11\/35?<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?\u6570\u636e\u5e93\u670d\u52a1\u5668\u95ee\u9898\uff0c\u6570\u636e\u5e93\u64cd\u4f5c\u65e0\u6cd5\u521b\u5efa\u65b0\u7ebf\u7a0b\u3002\u4e00\u822c\u662f\u4e24\u4e2a\u539f\u56e0\uff1a?1.\u670d\u52a1\u5668\u7cfb\u7edf\u5185\u5b58\u6ea2\u51fa\u3002?2.\u73af\u5883\u8f6f\u4ef6\u635f\u574f\u6216\u7cfb\u7edf\u635f\u574f\u3002?\u89e3\u51b3\u65b9 \u6cd5\uff1a?1.\u865a\u62df\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u4e0b\u7a7a\u95f4\u5546\u6570\u636e\u5e93\u670d\u52a1\u5668\u7684\u5185\u5b58\u548c\u7cfb\u7edf\u662f\u5426\u6b63\u5e38\u3002?2.\u72ec\u7acb\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u670d\u52a1\u5668\u7ba1\u7406\u5458\u68c0\u67e5\u670d\u52a1\u5668\u7684\u5185\u5b58\u548c\u7cfb\u7edf\u662f\u5426\u6b63\u5e38\uff0c\u5982\u679c\u670d \u52a1\u5668\u5185\u5b58\u7d27\u5f20\uff0c\u8bf7\u68c0\u67e5\u4e00\u4e0b\u54ea\u4e9b\u8fdb\u7a0b\u6d88\u8017\u4e86\u670d\u52a1\u5668\u7684\u5185\u5b58\uff0c\u540c\u65f6\u8003\u8651\u662f\u5426\u589e\u52a0\u670d\u52a1\u5668\u7684\u5185\u5b58\u6765\u63d0\u9ad8\u6574\u4e2a\u7684\u8d1f\u8f7d\u80fd\u529b\u3002
\n\u4e8c\u5341\u4e03\u3001Error: Client does notsupport authentication protocol requested by server; consider upgrading MySQLclient?error.:1251?<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?\u5982\u679c\u4f60\u5347\u7ea7MySQL \u5230 4.1 \u4ee5\u4e0a\u7248\u672c\u540e\u9047\u5230\u4ee5\u4e0a\u95ee\u9898,\u8bf7\u5148\u786e\u5b9a\u4f60\u7684MySQL Client \u662f 4.1 \u6216\u8005\u66f4\u9ad8\u7248\u672c(Windows\u4e0b\u6709\u95ee\u9898\u4f60\u5c31\u76f4\u63a5\u8df3\u5230\u4e0b\u9762\u770b\u89e3\u51b3\u65b9\u6cd5\u4e86\uff0c\u56e0\u4e3a MySQL \u5728Windows \u662f client \u548c server \u4e00\u8d77\u88c5\u4e0a\u4e86\u7684)\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.Windows \u5e73\u53f0?\u4e3b\u8981\u662f\u6539\u53d8\u8fde\u63a5MySQL \u7684\u5e10\u6237\u7684\u52a0\u5bc6\u65b9\u5f0f\uff0cMySQL 4.1\/5.0 \u662f\u901a\u8fc7PASSWORD \u8fd9\u79cd\u65b9\u5f0f\u52a0\u5bc6\u7684\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u5f97\u5230\u89e3\u51b3\uff1a?1) mysql->SET PASSWORD FOR’some_user’@’some_host’=OLD_PASSWORD(‘new_password’);?2) mysql->UPDATE mysql.user SETPassword=OLD_PASSWORD(‘new_password’) WHERE Host=’some_host’ ANDUser=’some_user’;?2.Linux\/Unix \u5e73\u53f0?Linux\u5e73\u53f0\u4e0b\u9996\u5148\u786e\u5b9a\u662f\u5426\u5b89\u88c5\u8fc7 MySQL \u7684\u5ba2\u6237\u7aef\uff0c\u8fd9\u4e2a\u7528 rpm\u5b89\u88c5\u5f88\u7b80\u5355\uff0cLinux \u4ee3\u7801\u4e3a\uff1a?rpm -ivh MySQL-client-4.1.15-0.i386.rpm?\u7136\u540e\u5728\u7f16\u8bd1 php \u7684\u65f6\u5019\u8981\u52a0\u4e0a\uff1a?–with-mysql=\/your\/path\/to\/mysql?\u4e00\u822c\u60c5\u51b5\u4e0b\u90fd\u53ef\u4ee5\u89e3\u51b3\u3002\u5982\u679c\u8fd8\u51fa\u73b0\u8fd9\u79cd\u9519\u8bef\uff0c\u53ef\u4ee5\u6309\u7167\u4e0b\u9762\u7684\u65b9\u6cd5\u6765 \u505a\uff1a?mysql->SET PASSWORD FOR’some_user’@’some_host’=OLD_PASSWORD(‘new_password’);?mysql->UPDATE mysql.user SET Password=OLD_PASSWORD(‘new_password’)WHERE Host=’some_host’ AND User=’some_user’;
\n\u4e8c\u5341\u516b\u3001Error: Can’t connect tolocal MySQL server through socket ‘\/var\/lib\/mysql\/mysql.sock’?error.:2002?<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u4e00\u822c\u60c5\u51b5\u4e0b\u662f\u56e0\u4e3a\u4e0b\u9762\u4e24\u4e2a\u539f\u56e0\uff1a?1.MySQL \u670d\u52a1\u5668\u6ca1\u6709\u5f00\u542f\u3002?2.MySQL \u670d\u52a1\u5668\u5f00\u542f\u4e86\uff0c\u4f46\u4e0d\u80fd\u627e\u5230 socket \u6587\u4ef6\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.\u865a\u62df\u4e3b\u673a\u7528\u6237\uff0c\u8bf7\u8054\u7cfb\u7a7a\u95f4\u5546\u786e\u8ba4\u6570\u636e\u5e93\u662f\u5426\u6b63\u5e38\u542f\u52a8\u3002?2.\u72ec\u7acb\u4e3b\u673a\u7528\u6237\uff0c\u8bf7\u68c0\u67e5\u4e00\u4e0b MySQL \u670d\u52a1\u662f\u5426\u5df2\u7ecf\u5f00\u542f\uff0c\u6ca1\u6709\u5f00\u542f\uff0c\u8bf7\u542f\u52a8MySQL \u670d\u52a1\uff1b\u5982\u679c\u5df2\u7ecf\u5f00\u542f\uff0c\u5e76\u4e14\u662f Linux \u7cfb\u7edf\uff0c\u8bf7\u68c0\u67e5\u4e00\u4e0bMySQL \u7684 socket \u7684\u8def\u5f84\uff0c\u7136\u540e\u6253\u5f00 config.inc.php \u627e\u5230?$dbhost = ‘localhost’; \u5728hostname \u540e\u9762\u52a0\u5192\u53f7\u2018:’\u548c MySQL \u7684socket \u7684\u8def\u5f84\u3002?\u6bd4\u5982MySQL \u670d\u52a1\u5668\u4e3a localhost?MySQL\u7684 socket \u7684\u8def\u5f84\u4e3a \/tmp\/mysql.sock?\u90a3\u4e48\u5c31\u6539\u6210\u5982\u4e0b\uff1a?$dbhost= ‘localhost:\/temp\/mysql.sock’;
\n\u4e8c\u5341\u4e5d\u3001Can’t connect to MySQLserver on ‘localhost’?error.:2003?<\/strong><\/p>\n

\u95ee\u9898\u5206\u6790\uff1a?MySQL\u670d\u52a1\u6ca1\u6709\u542f\u52a8\uff0c\u4e00\u822c\u662f\u5728\u5f02\u5e38\u7684\u60c5\u51b5\u4e0b MySQL \u65e0\u6cd5\u542f\u52a8\u5bfc\u81f4\u7684\uff0c\u6bd4\u5982\u65e0\u53ef\u7528\u7684\u78c1\u76d8\u7a7a\u95f4\uff0cmy.ini\u91cc MySQL \u7684 basedir \u8def\u5f84\u8bbe\u7f6e\u9519\u8bef\u7b49\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.\u68c0\u67e5\u78c1\u76d8\u7a7a\u95f4\u662f\u5426\u8fd8\u6709\u5269\u4f59\u53ef\u7528\u7a7a\u95f4\uff0c\u5c3d\u91cf\u4fdd\u6301\u6709\u8db3\u591f\u7684\u78c1\u76d8\u7a7a\u95f4\u53ef\u7528\u3002?2.\u68c0\u67e5 my.ini \u91cc\u7684basedir \u7b49\u53c2\u6570\u8bbe\u7f6e\u662f\u5426\u6b63\u786e\uff0c\u7136\u540e\u91cd\u65b0\u542f\u52a8\u4e0b MySQL \u670d\u52a1\u3002
\n\u4e09\u5341\u3001Lost connection to MySQLserver during query?error.:2013<\/strong><\/p>\n

?\u95ee\u9898\u5206\u6790\uff1a?\u6570\u636e\u5e93\u67e5\u8be2\u8fc7\u7a0b\u4e2d\u4e22\u5931\u4e86\u4e0eMySQL \u670d\u52a1\u5668\u7684\u8fde\u63a5\u3002?\u89e3\u51b3\u65b9\u6cd5\uff1a?1.\u8bf7\u786e\u8ba4\u60a8\u7684\u7a0b\u5e8f\u4e2d\u662f\u5426\u6709\u6548\u7387\u5f88\u4f4e\u7684\u7a0b\u5e8f\uff0c\u6bd4\u5982\u67d0\u4e9b\u63d2\u4ef6\uff0c\u53ef\u4ee5\u5378\u8f7d\u6389\u63d2\u4ef6\uff0c\u68c0\u67e5\u4e00\u4e0b\u670d\u52a1\u5668\u662f\u5426\u6b63\u5e38\uff1b?2.\u670d\u52a1\u5668\u672c\u8eab\u8d44\u6e90 \u7d27\u5f20\uff0c\u865a\u62df\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u7a7a\u95f4\u5546\u786e\u8ba4\uff0c\u72ec\u7acb\u4e3b\u673a\u7528\u6237\u8bf7\u8054\u7cfb\u670d\u52a1\u5668\u7ba1\u7406\u5458\uff0c\u68c0\u67e5\u4e00\u4e0b\u670d\u52a1\u5668\u662f\u5426\u6b63\u5e38\u3002
\n\u4e09\u5341\u4e00\u3001Got a packet bigger than\\’max_allowed_packet\\’ bytes?<\/strong><\/p>\n

\u9519\u8bef\u7f16\u53f7\uff1a1153?\u95ee\u9898\u5206\u6790\uff1a\u8c03\u6574\u4e86 Mantis \u7684\u4e0a\u4f20\u9644\u4ef6\u7684\u5927\u5c0f\u5374\u6ca1\u6709\u8c03\u6574 MySQL \u7684\u914d\u7f6e\u6587\u4ef6\u3002?\u89e3\u51b3\u529e\u6cd5\uff1a?1\u3001\u72ec\u7acb\u4e3b\u673a\u7528\u6237\u8bf7\u6309\u7167\u4ee5\u4e0b\u65b9\u6cd5\u8c03\u6574\uff1a?\u67e5\u627e MySQL \u7684\u914d\u7f6e\u6587\u4ef6\uff08my.cnf \u6216\u8005my.ini\uff09?\u5728[mysqld] \u90e8\u5206\u6dfb\u52a0\u4e00\u53e5\uff08\u5982\u679c\u5b58\u5728\uff0c\u8c03\u6574\u5176\u503c\u5c31\u53ef\u4ee5\uff09\uff1a?max_allowed_packet=10M?\u91cd\u542f MySQL \u670d\u52a1\u5c31\u53ef\u4ee5\u4e86\u3002\u8fd9\u91cc\u8bbe\u7f6e\u7684\u662f 10MB\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u00a0\u4e00\u3001Can’t connect to MySQL server on ‘localh … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[45],"class_list":["post-1172","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-mysql"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=1172"}],"version-history":[{"count":2,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1172\/revisions"}],"predecessor-version":[{"id":1174,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1172\/revisions\/1174"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=1172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=1172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=1172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}