您好,登錄后才能下訂單哦!
這篇文章將為大家詳細講解有關如何解決mysql中user表沒有的問題,小編覺得挺實用的,因此分享給大家做個參考,希望大家閱讀完這篇文章后可以有所收獲。
mysql user表沒有了的解決辦法:1、在“[mysqld]”中添加“skip-grant-tables”;2、編輯my.cnf配置文件,添加“sql_mode=NO_ENGINE_SUBSTITUTION”;3、重啟mysql服務。
本文操作環(huán)境:Windows7系統(tǒng),mysql5.5版,Dell G3電腦。
mysql 忘記密碼,重置密碼,mysql.user表為空的解決辦法:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
修改mysql配置文件my.cnf:
vim /etc/my.cnf
在[mysqld]中添加
skip-grant-tables
重啟mysql服務,用空密碼直接登錄,查詢用戶表,有結果則按如下步驟修改,結果為空直接最后的解決辦法
mysql> select Host,User,authentication_string from mysql.user; +-----------+---------------+-------------------------------------------+ | Host | User | authentication_string | +-----------+---------------+-------------------------------------------+ | localhost | root | *6A7A490FB9DC8C33C2B025A91737077A7E9CC5E5 | | localhost | mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | | localhost | mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | | % | root | *6A7A490FB9DC8C33C2B025A91737077A7E9CC5E5 | +-----------+---------------+-------------------------------------------+ 4 rows in set (0.00 sec)
修改對應用戶的密碼
# 重置密碼為 123456 mysql> update mysql.user set authentication_string=password('123456') where user='root' Query OK, 2 rows affected, 1 warning (0.00 sec) Rows matched: 2 Changed: 2 Warnings: 1 # 刷新權限,使配置生效 mysql> FLUSH PRIVILEGES; Query OK, 0 rows affected (0.00 sec) # 退出 mysql> quit Bye
取消或注釋掉my.cnf配置文件添加的選項 skip-grant-tables ,重啟mysql服務,搞定收工。
mysql> select Host,User,authentication_string from mysql.user; Empty set (0.00 sec) # 退出登陸 mysql> exit Bye
編輯my.cnf配置文件,添加或修改下面兩項(我這沒有sql_mode項):
sql_mode=NO_ENGINE_SUBSTITUTION skip-grant-tables
停止mysql服務,啟動數(shù)據(jù)庫的安全模式:mysqld_safe &
使用root 空密碼連接數(shù)據(jù)庫: mysql -uroot -p
插入root用戶數(shù)據(jù)
mysql> insert into mysql.user(Host,User,authentication_string) values("%","root",password("123456")); Query OK, 1 row affected, 4 warnings (0.00 sec)
再次查詢mysql.user表,會報錯
mysql> select Host,User,authentication_string from mysql.user; ERROR 1194 (HY000): Table 'user' is marked as crashed and should be repaired
需要修復mysql.user表
mysql> REPAIR TABLE mysql.user; +------------+--------+----------+-------------------------------------------------+ | Table | Op | Msg_type | Msg_text | +------------+--------+----------+-------------------------------------------------+ | mysql.user | repair | info | Wrong bytesec: 113-108- 95 at 396; Skipped | | mysql.user | repair | info | Found block that points outside data file at 32 | | mysql.user | repair | info | Found block that points outside data file at 36 | | mysql.user | repair | info | Found block that points outside data file at 40 | | mysql.user | repair | info | Found block that points outside data file at 44 | | mysql.user | repair | info | Found block that points outside data file at 48 | | mysql.user | repair | info | Found block that points outside data file at 52 | | mysql.user | repair | info | Found block that points outside data file at 56 | | mysql.user | repair | info | Found block that points outside data file at 60 | | mysql.user | repair | warning | Number of rows changed from 4 to 3 | | mysql.user | repair | status | OK | +------------+--------+----------+-------------------------------------------------+ 11 rows in set (0.64 sec) # 再次查詢user表 mysql> select Host,User,authentication_string from mysql.user; +-----------+---------------+-------------------------------------------+ | Host | User | authentication_string | +-----------+---------------+-------------------------------------------+ | localhost | mysql.session | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | | localhost | mysql.sys | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE | | % | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | +-----------+---------------+-------------------------------------------+ 3 rows in set (0.00 sec)
修改root用戶的權限:
update mysql.user set `Select_priv` = 'Y', `Insert_priv` = 'Y', `Update_priv` = 'Y', `Delete_priv` = 'Y', `Create_priv` = 'Y', `Drop_priv` = 'Y', `Reload_priv` = 'Y', `Shutdown_priv` = 'Y', `Process_priv` = 'Y', `File_priv` = 'Y', `Grant_priv` = 'Y', `References_priv` = 'Y', `Index_priv` = 'Y', `Alter_priv` = 'Y', `Show_db_priv` = 'Y', `Super_priv` = 'Y', `Create_tmp_table_priv` = 'Y', `Lock_tables_priv` = 'Y', `Execute_priv` = 'Y', `Repl_slave_priv` = 'Y', `Repl_client_priv` = 'Y', `Create_view_priv` = 'Y', `Show_view_priv` = 'Y', `Create_routine_priv` = 'Y', `Alter_routine_priv` = 'Y', `Create_user_priv` = 'Y', `Event_priv` = 'Y', `Trigger_priv` = 'Y', `Create_tablespace_priv` = 'Y' where user='root'; # 更新權限 mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) # 退出登陸 mysql> exit Bye
退出mysql,將my.cnf配置文件的修改恢復
結束mysqld_safe 進程:pkill mysql
啟動mysql服務: systemctl start mysql
問題解決!
關于“如何解決mysql中user表沒有的問題”這篇文章就分享到這里了,希望以上內容可以對大家有一定的幫助,使各位可以學到更多知識,如果覺得文章不錯,請把它分享出去讓更多的人看到。
免責聲明:本站發(fā)布的內容(圖片、視頻和文字)以原創(chuàng)、轉載和分享為主,文章觀點不代表本網(wǎng)站立場,如果涉及侵權請聯(lián)系站長郵箱:is@yisu.com進行舉報,并提供相關證據(jù),一經查實,將立刻刪除涉嫌侵權內容。