Has any one come across this error ?

ORA-07445: exception encountered: core dump [08DFC6EB] [SIGSEGV] [page fault] [134512640] [46] []

the outbound database link from 7.3.4 to 8.0.4 is
causing core dump in 8.0.4 database
& above error in alert log & trace file at 7.3.4 database.
* the link was working fine for last 1 yr.

Thanks in advance