ORA-600 when drop schema in 9.2.0.4 on Linux

Hi all,

   I have been used 9.2.0.4 on Linux. And it's database for testing. Today, I tried drop schema X on db but I received ORA-600 with detail:

   Errors in file /disk2/ebao/oracle/admin/dev3/bdump/dev3_s000_19561.trc:
   ORA-00600: internal error code, arguments: [16206], [4294951947], [], [], [], [], [], []

   From trace file, look like:

*** SESSION ID:(15.4) 2012-08-09 08:31:37.287

*** 2012-08-09 08:31:37.287

ksedmp: internal or fatal error

ORA-00600: internal error code, arguments: [16206], [4294951945], [], [], [], [], [], []

Current SQL statement for this session:

drop synonym "X"."GV_$KQRPD" force

----- Call Stack Trace -----

calling              call     entry                argument values in hex     
location             type     point                (? means dubious value)    
-------------------- -------- -------------------- ----------------------------
ksedmp()+269         call     ksedst()+0           0 ? 0 ? 0 ? 0 ? BFFF712C ?