练习:创建还原点
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--1.确定数据库是OPEN或MOUNT状态。 -- 如果数据库是MOUNT状态,则它必须已经被干净地关闭,除非它是物理备用数据库 --2.1 创建正常的还原点 sys@TESTDB12>create restore point rp_before_delete;
Restore point created.
sys@TESTDB12>delete from scott.emp where deptno = 10;
3 rows deleted.
sys@TESTDB12>commit;
Commit complete.
--2.2 创建保证的还原点 sys@TESTDB12>create restore point rp_before_insert guarantee flashback database;
Restore point created.
sys@TESTDB12>insert into scott.dept values(50, 'DnameA', 'LocA');
1 row created.
sys@TESTDB12>commit;
Commit complete. |
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