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status in v$rollstat is offline

Posted on 2008-10-07
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Last Modified: 2013-12-18
Sir,
In my database the select status from v$rollstat is offline
Is there any steps to make it online
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Question by:dbaseek
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by:Shaju Kumbalath
ID: 22666479
check the output

SELECT name,status FROM v$rollstat r,v$rollname n WHERE r.usn = n.usn;
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Shaju Kumbalath earned 2000 total points
ID: 22666506

select value from v$parameter where name = 'undo_tablespace' ;
note down that name;
alter system set undo_tablespace='';
check

SELECT name,status FROM v$rollstat r,v$rollname n WHERE r.usn = n.usn;

alter system set undo_tablespace='<put undo table space name>';  
 
 SELECT name,status FROM v$rollstat r,v$rollname n WHERE r.usn = n.usn;
 
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