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Oracle中将表设置为read only的问题

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Release: 2016-06-07 17:29:19
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关于Oracle中将表设置为read only的问题 alter table test3 read only; 这个特性应该是从11g新增的,因为在10g中执行会报错: OR

关于Oracle中将表设置为read only的问题

alter table test3 read only;

这个特性应该是从11g新增的,因为在10g中执行会报错:

ORA-01735: 无效的 ALTER TABLE 选项

当设置为read only以后,就不可以再插入数据,修改数据或者删除数据,,也就是说insert,update,delete,truncate等DML操作对该表都无法执行了:

ORA-12081: 不允许对表 "APPS_SBD"."TEST1" 进行更新操作

但是drop命令还是可以用的,原因是drop是DDL命令,它操作的应该是数据字典,不受read only的限制。

补充一下,想要将表恢复成可写状态很简单:

alter table test3 read write;

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