Hello, This looks like: *Bug 10101043: DATABASE CRASH AND FAILS TO OPEN WITH ORA-600 [KCRATR_NAB_LESS_THAN_ODR]* * * The "workaround" is to restore and do PITR. sorry, jason. -- http://jarneil.wordpress.com On 23 October 2010 16:51, Zhou Huan <patriotzhou@xxxxxxxxx> wrote: > Hi Guys, > > My system shutdown abnormally due to power. > Now the database not able to open, it prompt: > ORA-00600: internal error code, arguments: [kcratr_nab_less_than_odr], [1], > [43], [17448], [17450], [], [], [], [], > [], [], [] > I searched google, but no solution. Any advise? > Thank you. > >