mysql innodb儲存引擎的表空間
阿新 • • 發佈:2020-10-29
InnoDB儲存引擎的表空間
1.共享表空間(ibdata1)
1)儲存的內容
1.系統資料
2.臨時表
3.undo 日誌 事務的日誌 redo undo
2)檢視共享表空間
mysql> show variables like '%path%'; +-----------------------+------------------------+ | Variable_name | Value | +-----------------------+------------------------+ | innodb_data_file_path | ibdata1:12M:autoextend | | ssl_capath | | | ssl_crlpath | | +-----------------------+------------------------+ 3 rows in set (0.00 sec)
3)配置共享表空間
#1.編輯配置檔案 [root@db01 ~]# vim /etc/my.cnf [mysqld] innodb_data_file_path=ibdata1:50M;ibdata2:50M:autoextend #2.啟動資料庫報錯 [root@db01 ~]# systemctl restart mysqld.service #為了檢視報錯 [root@db01 ~]# /etc/init.d/mysqld start Starting MySQL. ERROR! The server quit without updating PID file (/usr/local/mysql/data/db01.pid). #3.看日誌報錯 [root@db01 ~]# less /usr/local/mysql/data/db01.err 2020-10-29 18:10:47 16917 [ERROR] InnoDB: Data file ./ibdata1 is of a different size 4864 pages (rounded down to MB) than specified in the .cnf file 768 pages! #4.錯誤原因 共享表空間ibdata1設定的結束大小與實際ibdata1大小不符合 #5.解決問題 [root@db01 ~]# vim /etc/my.cnf [mysqld] #修改ibdata1大小與資料目錄下的大小一致即可 innodb_data_file_path=ibdata1:76M;ibdata2:12M:autoextend #6.重啟服務 [root@db01 ~]# systemctl restart mysqld.service
2.獨立表空間
1)檢視獨立表空間
#1.物理層面檢視 [root@db01 ~]# ll /usr/local/mysql/data/xiangqin 總用量 144 -rw-rw---- 1 mysql mysql 8785 10月 28 19:05 user.frm -rw-rw---- 1 mysql mysql 131072 10月 28 19:05 user.ibd #2.資料庫檢視 mysql> show variables like '%per_table%'; +-----------------------+-------+ | Variable_name | Value | +-----------------------+-------+ | innodb_file_per_table | ON | +-----------------------+-------+ 1 row in set (0.00 sec)