Oracle入门教程:在表空间之间移动数据对象
在表空间之间移动数据对象 一、基础脚本 在Oracle数据库的表空间之间移动对象会涉及多种类型的数据对象移动表: alter
一、基础脚本
在Oracle数据库的表空间之间移动对象会涉及多种类型的数据对象
移动表:
移动索引:
移动LOBSEGMENT:
根据实际检验LOBINDEX会随着相应的LOBSEGMENT自动移动
移动表的同时移动LOBSEGMENT:
如果表中有字段为LONG类型的,那么该表不能按照上面的方法移动,只能使用EXP/IMP来移动了
二、批量生成移动脚本
如果有大量的对象需要移动,一行一行写脚本就很不现实,可以使用下面的脚本来生成移动的脚本
--生成LOBSEGMENT的移动语句,,目的是把用户USR_A的LOBSEGMENT对象从表空间TBS_OLD移动到TBS_NEW,所生成的语句执行后,相应的LOBINDEX对象也会跟着移动到TBS_NEW
--如要把LOB段所在的表也随同LOB段移动到新的表空间,可使用以下语句来生成脚本
--生成移动USR_A的表和索引的脚本,排序是为了移动表的脚本在前,移动索引的脚本在后,按序执行即可;否则先移索引后移表会导致索引失效
--可以用以下语句检查dba_indexes数据字典表中的失效的索引信息
三、一些可能会用到的查询语句
另外还有一些可能会用到的查询表空间中数据对象信息的语句
--统计用户USR_A的数据对象数
--查看用户USR_A的数据对象所分布的表空间名
--查看用户USR_A的LOB段和LOB索引对象
--分表空间、段类型统计用户USR_A的数据对象数

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