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    如何利用innobackupex备份集恢复指定库[ mysql数据库 ]

    mysql数据库 时间:2024-11-26 22:17:33

    作者:文/会员上传

    简介:

    1.源库导出表结构mysqldump -uroot -p --no-data zabbix > info.sql2.创建要恢复的库、表mysql> create database zabbix character set utf8 collate utf8_bin;mysql> use

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    1.源库导出表结构

    mysqldump -uroot -p --no-data zabbix > info.sql

    2.创建要恢复的库、表

    mysql> create database zabbix character set utf8 collate utf8_bin;

    mysql> use zabbix;

    mysql> source info.sql

    3.查看外键约束

    mysql> SELECT @@FOREIGN_KEY_CHECKS;

    +----------------------+

    | @@FOREIGN_KEY_CHECKS |

    +----------------------+

    |1 |

    +----------------------+

    1 row in set (0.00 sec)

    查看要迁移的表是否有外键约束:

    mysql> select * from information_schema.TABLE_CONSTRAINTS where table_schema = 'zabbix' and constraint_type = 'FOREIGN KEY';

    如果有的话,禁用外键:

    mysql> SET FOREIGN_KEY_CHECKS=0;

    Query OK, 0 rows affected (0.00 sec)

    4.库中的表进行discard tablespace

    mysql> select concat('alter table ',table_name,' discard tablespace;') from information_schema.tables where table_schema = 'zabbix';

    mysql> alter table acknowledges discard tablespace;

    Query OK, 0 rows affected (0.00 sec)

    mysql> alter table actions discard tablespace;

    Query OK, 0 rows affected (0.00 sec)

    ......

    然后重新启用外键约束:

    mysql> SET FOREIGN_KEY_CHECKS=1;

    Query OK, 0 rows affected (0.00 sec)

    5.将apply-log后的备份集中表的ibd文件拷贝到数据目录下并修改权限:

    cp *.ibd /opt/app/mysql/mysql5722/data/zabbix/

    chown -R mysql.mysql /opt/app/mysql/mysql5722/data/zabbix/*

    6.库中的表进行import tablespace

    mysql> select concat('alter table ',table_name,' import tablespace;') from information_schema.tables where table_schema = 'zabbix';

    如果报错:ERROR 1808 (HY000): Schema mismatch (Table has ROW_TYPE_DYNAMIC row format, .ibd file has ROW_TYPE_COMPACT row format.)

    则修改表的row_format:

    mysql> select concat('alter table ',table_name,' row_format=compact;') from information_schema.tables where table_schema = 'zabbix';

    注意:修改表的row_format后,要重新进行第5步

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