ORA-00600: internal error code, arguments: [kcratr1_lostwrt],[], [],[], [],[], [], []

Scenerio
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Oracle 9.2.0.1 on Windows

After a power failure, when tried to startup the database normally, it did not start.
The database status was 'MOUNTED'. When tried with 'alter database open; the error was :
 
ORA-00600: internal error code, arguments: [kcratr1_lostwrt],[], [],[], [],[], [], []

Work around
---------------

SQL> Shutdown Immediate;
SQL> STARTUP MOUNT;
SQL> RECOVER DATABASE;
SQL> ALTER DATABASE OPEN;