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Erlang Mnesia数据库的备份和还原

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2016-06-07 15:42:031123browse

1、备份: mnesia:backup(/home/mnesia_backup/20140903.log). 2、还原: mnesia:restore(/home/mnesia_backup/20140903.log,[]). 第一次测试的时候,先备份,之后将mnesia目录下文件统统删除。之后运行还原的命令,竟然出现以下错误: 起初以为是reserved_a

1、备份:

mnesia:backup("/home/mnesia_backup/20140903.log").

Erlang Mnesia数据库的备份和还原


2、还原:

mnesia:restore("/home/mnesia_backup/20140903.log",[]).

第一次测试的时候,先备份,之后将mnesia目录下文件统统删除。之后运行还原的命令,竟然出现以下错误:

Erlang Mnesia数据库的备份和还原

起初以为是reserved_acc数据表有问题,最后才发现,将mnesia目录文件全部删除后,表的数据都不存在了。所以要先建立空表。之后才能还原!

Erlang Mnesia数据库的备份和还原

这样就正常了。

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