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Recovery -- Can 't place tablespace offline ?

Recovery -- Can 't place tablespace offline ?

2004-03-17       - By Prem Khanna J
Reply:     1     2     3     4  

Hi List,

-- ----- oracle 9.2.0.4 on win2k -- -----

I need to try recovery scenario {case 6} in
Freeman 's RMAN book. In order to simulate
datafile corruption , i decided to overwite the
database file with a small text file when the
database is open.

But later in order to recover,i am not able to
place the tablespace ( which had the datafile )
offline. Doing so , i get the error :

ORA-01115 (See ORA-01115.ora-code.com) : IO error reading block from file 5 (block #1)
ORA-01110 (See ORA-01110.ora-code.com) : datafile 5 : 'd:\indx01.dbf '
ORA-27091 (See ORA-27091.ora-code.com) : skgfqio: unable to queue I/O
ORA-27070 (See ORA-27070.ora-code.com) : skgfdisp: async read/write failed

1.How do i place the tablespace offline in the above case
and proceed further with recovery when DB is OPEN ?
However , I am able to recover when the DB is mounted.

2.How to corrupt a datafile when DB is open other than
as i did ?

Regards,
Prem.

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