一.查询zabbix数据库大小 mysql> select table_schema, concat(truncate(sum(data_length)/1024/1024,2),' mb') as data_size,concat(truncate(sum(index_length)/1024/1024,2),'mb') as index_size from information_schema.tables group by table_schema order by data_size d
mysql导入数据,navicat报错: MySQL server has gone away Table Restored: act_ge_bytearray Rolling back... Finished - Stopped before completion -------------------------------------- 问题原因:导入的数据超过了mysql默认单个字段最大容量 #查看数据库中最大的单个文件容量 SHOW VARIABLES LIKE '%max_all
原题链接http://acm.hust.edu.cn/vjudge/contest/121397#problem/A Description In mathematics, the nth harmonic number is the sum of the reciprocals of the first n natural numbers: In this problem, you are given n, you have to find Hn. Input Input starts wit
分享工作中遇到的问题积累经验 事务日志太大导致insert不进数据 今天开发找我,说数据库insert不进数据,叫我看一下 他发了一个截图给我 然后我登录上服务器,发现了可疑的地方,而且这个数据库之前有一段经历 在月初的时候这个数据库曾经置疑过,启动不起来 Could ::), :), :), ). Page: LSN ::), type . , context , PrevPageLSN: (::). Restore from a backup of the database, or repa