ORA-04043 error after applying the patches

Hi,
I applied the patchset 8.1.7.2 on 8.1.7.0 in solaris anf after that i recompiled some of the invalid objects.But i was unable to recompile a function NameFromLastDDL of sys schema.

When i tried to recompile this function,it is giving me a error ORA-04043 object does not exist.When i tried to drop this function ,then also the same error message.

I queried the dba_objects and found the name of the object as typed above not all the charachers in upper case was found as invalid.What to do now?.

Pls. help me

Thanks

alter function "NameFromLastDDL" compile

or, you can use the utlrp.sql script from $OH/rdbms/admin

alter function "NameFromLastDDL" compile

Yes This Worked ....Thanks a lot...