Oracle中几种常见的数据库错误类型及处理方法

ERROR 2003 (HY000): Can't connect to MySQL server on 'localhost' (10061)

sudo systemctl status mysql

# 在my.cnf或my.ini文件中
[mysqld]
bind-address = 0.0.0.0

sudo ufw allow 3306

ERROR 1205 (HY000): Lock wait timeout exceeded; try restarting transaction

-- 查找持有锁的会话
SHOW PROCESSLIST;
-- 终止会话
KILL <process_id>;

SET innodb_lock_wait_timeout = 50;

ERROR 145 (HY000): Table './database/table' is marked as crashed and should be repaired

CHECK TABLE database.table;

REPAIR TABLE database.table;

ORA-01653: unable to extend table <schema>.<table> by <number> in tablespace <tablespace>

ALTER DATABASE DATAFILE '/path/to/datafile.dbf' RESIZE 100M;

ALTER TABLESPACE <tablespace> ADD DATAFILE '/path/to/newfile.dbf' SIZE 100M;

ERROR 1044 (42000): Access denied for user 'user'@'host' to database 'database'

GRANT ALL PRIVILEGES ON database.* TO 'user'@'host';
FLUSH PRIVILEGES;

ERROR:  syntax error at or near "FROM"
LINE 1: SELECT * FORM table;
                    ^

-- 错误的SQL语句
SELECT * FORM table;
-- 正确的SQL语句
SELECT * FROM table;