mysql -u username -p Copy Then, type yourpassword, at the Enter Password prompt. When you type the correct password, the mysql> prompt appears. To check the sizes of all of your databases, at the mysql> prompt type the following command: SELECT table_schema AS"Database", ROUND(SUM(data...
The MySQL command-line client program,mysql, is one of the tools that we can use for checking the existence of a MySQL database.It’s generally used as an interactive SQL shell, but it’s also possible to execute SQL statements from the command line. 2.1. Using theuseStatement Let’s u...
To check the sizes of all of your databases, at the mysql> prompt type the following command: CopySELECT table_schema AS "Database", ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS "Size (MB)" FROM information_schema.TABLES GROUP BY table_schema; Depending on how many ...
Command-Line Format --databases Process all tables in the named databases. Normally, mysqlcheck treats the first name argument on the command line as a database name and any following names as table names. With this option, it treats all name arguments as database names. --debug[=debug_...
mysqlcheck is a table maintenance program to check, repair, optimize, or analyze multiple tables from the command line. It works with InnoDB, MyISAM, and ARCHIVE tables and provides three levels of checking: Table-specific Database-specific ...
For whatever reason, if the command is not found, and you get this error: C:\Users\JayRizzo> mysqlcheck -u root --auto-repair --optimize --all-databases # 'mysqlcheck' is not recognized as an internal or external command, # operable program or batch file. Try using the base directory...
Database changed mysql> create table user_tb(idint,name varchar(20)) engine=MyISAM; Query OK, 0 rows affected (0.02 sec) mysql> insertintouser_tb values(1,'张三'),(2,'李四'),(3,'王五'),(4,'赵六'); Query OK, 4 rows affected (0.11 sec) ...
# Cannot checksum table test.t: There is no good index and the table is oversized. at ./pt-table-checksum line 6370. 4.等待信息,已检测的百分比,这是因为设置了主键但是没有索引导致没有分块且表过大造成。 # Checksumming database.table: 27% 01:17 remain ...
3、查看 check_mysql AI检测代码解析 # ls /usr/local/nagios/libexec/check_mysql 1. 4、建立专用数据库 AI检测代码解析 # mysql -uroot -pmysql>create database nagios_monitor;mysql>grantselecton nagios_monitor.* to nagios@'%'identified by'123qaz!@#';Query OK,0rows affected(0.00sec)mysql>flus...
3、查看 check_mysql 1 # ls /usr/local/nagios/libexec/check_mysql 4、建立专用数据库 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 # mysql -uroot -p mysql> create database nagios_monitor; mysql> grant select on nagios_monitor.* to...