RMAN tablespace point-in-time recovery (abbreviated as TSPITR) enables you to quickly recover one or more tablespace in an oracle database to a previous time, without affecting the rest of the tablespaces in your database.
When you can use TSPITR
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We need to remember that with RMAN TSPITR the whole data set inside the tablespace will be recover to an earlier time rather than single object.
In the following cases you might choose to use TSPITR.
1)Erroneously TRUNCATE TABLE statement is execute on a table.
2)Wrong update is done on a table and committed.
3)In a database there is several schema each in different tablespace. Now I want to get back a single schema to an earlier time.
It is good to remember that if a database run on a NOARCHIVELOG mode then TSPITR can't be performed. In other word I can say if I don't have archived redo logs then TSPITR can't be performed.
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