Read Only Tablespace Backup Issue

Hii!!
I had been trying to to take Read Only Table space Backup. So, firstly changed the tablespace using
SQL> alter tablespace users read only;
Tablespace altered.
2. Then took backup of all the data files using OS Copy command.
Now , the issue i am facing is that can i change the table space to read_write mode???? If yes , then how?? , plz help...

I had been trying to to take Read Only Table space Backup. So, firstly changed the tablespace using
SQL> alter tablespace users read only;
Tablespace altered.
2. Then took backup of all the data files using OS Copy command.
Now , the issue i am facing is that can i change the table space to read_write mode???? If yes , then how?? , plz help...Yes you can do,
SQL> alter tablespace users read write;After successful restore,
sys@11GDEMO> select tablespace_name,status from dba_tablespaces where tablespace_name='CKPT';
TABLESPACE_NAME                STATUS
CKPT                           ONLINE
sys@11GDEMO> alter tablespace ckpt read only;
Tablespace altered.
sys@11GDEMO> select tablespace_name,status from dba_tablespaces where tablespace_name='CKPT';
TABLESPACE_NAME                STATUS
CKPT                           READ ONLY+
sys@11GDEMO> alter tablespace ckpt read write;+
Tablespace altered.
sys@11GDEMO> select tablespace_name,status from dba_tablespaces where tablespace_name='CKPT';
TABLESPACE_NAME                STATUS
CKPT                           ONLINE+
sys@11GDEMO>
Edited by: CKPT on Jul 6, 2011 11:22 AM

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Many Thanks

My target database have 5 datafiles, in that one datafile is in read only mode.I presume that you mean to say that 1 Tablespace consisting of 1 datafile is Read Only.
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Hemant K Chitale
http://hemantoracledba.blogspot.com
Edited by: Hemant K Chitale on May 3, 2010 12:02 AM

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Why r we not use tablespce begin backup with read only tablespace

why r we not use tablespce begin backup with read only tablespace

Please learn English prior to posting. The schools in India are not that bad!
Please RTFM.
Please stop asking doc questions at lightning speed.
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2 FOR A IN 1..10 LOOP
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4 END LOOP;
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6 END;
7 /
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ORA-00372: file 6 cannot be modified at this time
ORA-01110: data file 6: 'D:\ORACLE\ORADATA\TEST_TS1.DAT'
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Hi,
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Thx,

There are some attempt here:
select bl.INST_ID, bl.sid, bl.TYPE, bl.LMODE,bl.REQUEST,s.USERNAME
from GV$GLOBAL_BLOCKED_LOCKS bl, gv$session s
where bl.INST_ID=s.INST_ID and bl.SID=s.sid;
INST_ID   SID TY      LMODE    REQUEST USERNAME
         3   186 PS          4          6 USERWEB1
         3   376 PS          4          0 USERWEB1
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from (select
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4                 decode (l.type,
5                         'tm', l.id1,
6                         'tx', decode (l.request,
7                                       0, nvl (lo.object_id, -1),
8                                       s.row_wait_obj#
                       -1
9   10   11                        ) as object_id,
12                   l.type lock_type,
13                 DECODE (l.lmode,
14                         0, 'NONE',
15                         1, 'NULL',
16                         2, 'ROW SHARE',
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19                         5, 'SHARE ROW EXCLUSIVE',
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23   24                         0, 'NONE',
25                         1, 'NULL',
26                         2, 'ROW SHARE',
27                         3, 'ROW EXCLUSIVE',
28                         4, 'SHARE',
29                         5, 'SHARE ROW EXCLUSIVE',
30                         6, 'EXCLUSIVE',
31                         '?'
32                        ) mode_requested,
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34                 s.row_wait_row#, s.row_wait_file#
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39                    from gv$locked_object
40                   where xidsqn > 0) lo
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9 SUBSTR(s2.program,1,20) "HOLDING Program",
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11 o.object_name "HOLDING Object"
12 FROM gv$process p1, gv$process p2, gv$session s1,
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16 AND h.mode_held != 'Null'
17 AND w.mode_requested != 'None'
18 AND s1.row_wait_obj# = o.object_id
19 AND w.lock_type(+) = h.lock_type
20 AND w.lock_id1(+) = h.lock_id1
21 AND w.lock_id2 = h.lock_id2
22 AND w.session_id = s1.sid
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added comments to the code
Message was edited by:
TongucY

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