Crash Recovery Fails With ORA-27067

Problem Symptoms
After performing shutdown abort whenever I try to start my database it fails to perform crash recovery. Below is from alert log.

Wed May 21 07:11:43 2008
Errors in file /ora/udump/shaik_ora_12424.trc:
ORA-01115: IO error reading block from file 2 (block # 11546)
ORA-01110: data file 2: '/ora/data/data01/shaik_undotbs01.dbf'
ORA-27067: size of I/O buffer is invalid
Additional information: 2
Additional information: 1245184

Cause of the Problem
This is oracle bug. It fired whenever someone gave very large insert operation and during that time issued shutdown abort.

Solution of the Problem
Just perform normal recovery. To do so,
1)$sqlplus / as sysdba
2)startup mount;
3)recover database;
4)alter database open;

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