windows下原數據庫爲mysql 5.6.12,現在需要升級到5.6的最終版本5.6.47
下載地址爲:
https://dev.mysql.com/downloads/mysql/
選擇合適的版本.
1.查看原mysql版本和數據目錄
C:\Users\Administrator>mysql -uroot -p
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.6.12 MySQL Community Server (GPL)
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select @@version;
+-----------+
| @@version |
+-----------+
| 5.6.12 |
+-----------+
1 row in set (0.00 sec)
查看mysql安裝目錄和數據文件目錄:
mysql> show variables like 'datadir';
+---------------+----------------+
| Variable_name | Value |
+---------------+----------------+
| datadir | e:\mysql\data\ |
+---------------+----------------+
1 row in set (0.00 sec)
mysql> show variables like 'basedir';
+---------------+----------+
| Variable_name | Value |
+---------------+----------+
| basedir | e:\mysql |
+---------------+----------+
1 row in set (0.00 sec)
2.數據庫備份
在做之前需要對數據庫進行備份,可以使用冷備份或者mysqldump導出.
冷備份:
a)停止mysql數據庫
b)拷貝數據目錄
導出備份:
例如下面備份suq這個數據庫
E:\>mysqldump -uroot -p --default-character-set=utf8 --databases suq >suq.sql
Enter password: ****
3.安裝新的數據庫版本
3.1 停止mysql
E:\>net stop mysql
MySQL 服務正在停止.
MySQL 服務已成功停止。
3.2 刪除原來mysql服務
E:\>mysqld -remove mysql
Service successfully removed.
3.3 將原來的mysql目錄改名
原來的目錄爲e:\mysql,修改爲e:\mysql-5.6.12
3.4 將新版本的mysql安裝到原目錄中
a)解壓縮5.6.47的mysql到e:\mysql中
b)如果存在則刪除新解壓縮目錄中的data和my.ini
c)將改名後的目錄中的data和my.ini拷貝到e:\mysql中
這裏如果data目錄沒有存放到basedir下,則不需要拷貝data目錄.即要保證my.ini中指定的datadir是原來的數據文件目錄
這樣操作的好處就是不需要修改PATH環境變量再添加新的安裝路徑
3.5創建新的mysql服務
E:\>mysqld -install mysql
Service successfully installed
現在創建了新的mysql服務,服務名爲mysql,而且使用的是新版本的mysqld程序創建的.
3.6 啓動mysql,升級數據字典
E:\>net start mysql
mysql 服務正在啓動 .
mysql 服務已經啓動成功。
這個時候mysql已經版本已經是5.6.47了:
E:\>mysql -uroot -p
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.47 MySQL Community Server (GPL)
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> select @@version;
+-----------+
| @@version |
+-----------+
| 5.6.47 |
+-----------+
但是還需要升級一下字典:
使用mysql_upgrade 進行升級,如果數據量很大可能會較慢:
E:\>mysql_upgrade -uroot -p
Enter password: ****
Looking for 'mysql.exe' as: e:\mysql\bin\mysql.exe
Looking for 'mysqlcheck.exe' as: e:\mysql\bin\mysqlcheck.exe
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
mysql.columns_priv OK
mysql.db OK
mysql.event OK
mysql.func OK
mysql.general_log OK
mysql.help_category OK
mysql.help_keyword OK
mysql.help_relation OK
mysql.help_topic OK
mysql.innodb_index_stats OK
mysql.innodb_table_stats OK
mysql.ndb_binlog_index OK
mysql.plugin OK
mysql.proc OK
mysql.procs_priv OK
mysql.proxies_priv OK
mysql.servers OK
mysql.slave_master_info OK
mysql.slave_relay_log_info OK
mysql.slave_worker_info OK
mysql.slow_log OK
mysql.tables_priv OK
mysql.time_zone OK
mysql.time_zone_leap_second OK
mysql.time_zone_name OK
mysql.time_zone_transition OK
mysql.time_zone_transition_type OK
mysql.user OK
Running 'mysql_fix_privilege_tables'...
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
suq.t1 OK
OK