help!! oracle8.1.5.0 has been crash down!

when i truncate a table ,suddenly ,the power has down . when i turn on the server and i could not startup the database. and then i tail alert.log and found
ORA-00600: internal error code, arguments: [2023], [5], [1], [], [], [], [], []
Mon Nov 8 13:25:47 2004
PMON: terminating instance due to error 474
Instance terminated by PMON, pid = 4220

I use google to search above message and found that was oracle's bug
this bug would appear in oracle8i to oracle9i when use truncate a table and truncate's process suddenly abort .

The sticking point was system has dirty information. i had been used
_corrupted_rollback_segments(system) to drop the system table,when i startup the database ,it indicate that it was not the correct parameter to oracle.

how can i do ? plesase help me!