Can anybody help me??

I got the following message:
ora-00600: internal error code ,arguments:[17113],[0x0000000000],[],[],.... when I try to modify a table structure or when I try to compile a procedure.

What can I do?

version of the database is:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production

platform:
HP-UX 11.00 9000

ORA-0600 is a nasty server-side internal error that will cause a core dump of your db server.You don't say what version of the database you are using or what platform, so I can't really say any more than this. Talk to your DBA about this one