The SCN Issue – Addressed in Jan 2012 CPU
Recently it has been found that database can run out of SCN (as it jumps to very high values)if we use HOT BACKUP, Database Links etc causing ORA-00600 [2252].Infoworld has published an article on it -
http://www.infoworld.com/d/security/fundamental-oracle-flaw-revealed-184163-0?page=0,0
The Jan 2012 CPU patch seems to have addressed the issue.Have a look on it and decide
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Thanks Anand. All our customer sites have been urged to apply this patch.