Please do some due diligence before posting.

You are encountering bug#1732852. Look at metalink. You need to upgrade to a supportable version - 8.1.7. Log a TAR for ORA-00600s..but in this case, Oracle will ask you to upgrade.

PS : You are highlighting a less relevent portion of the trace file. All that you ought to pay attention to is - ORA-000600 and the first/second arguments.