Here are some of the threads that discusses on this issue. Always first try to recover from your backup. If that doesn't work, <b>as a last resolution only choose to rebuild the control file </b>.


[url]http://www.dbasupport.com/forums/showthread.php?threadid=7833[/url]

[url]http://www.dbasupport.com/forums/showthread.php?threadid=5619[/url]

[url]http://www.dbasupport.com/forums/showthread.php?threadid=5130[/url]

[url]http://www.dbasupport.com/forums/showthread.php?threadid=3109[/url]

[url]http://www.dbasupport.com/forums/showthread.php?threadid=1532[/url]

Good luck
Sam