Hi when i run the follwing query..i am getting the above error..

SELECT  LKP_STATIC_DATA_DETAIL.CODE 
FROM            
        LKP_STATIC_DATA_DETAIL 
WHERE                  (LKP_STATIC_DATA_DETAIL.LIST_NAME = N'EVENT_TYPE' 
                        AND LKP_STATIC_DATA_DETAIL.IS_ACTIVE = N'-1' 
                        AND UPPER(LKP_STATIC_DATA_DETAIL.LANGUAGE_CODE) = N'EN' 
                        AND LKP_STATIC_DATA_DETAIL.CONTEXT_CODE = N'DEFAULT') 
ORDER BY        LKP_STATIC_DATA_DETAIL.DISPLAY_SEQUENCE ASC 

to solve this issue..my lead gave the following command..
alter table  LKP_STATIC_DATA_DETAIL  move tablespace poetic

then the issue was fixed for that moment..later for the same statement it is raising 
ORA-00600: internal error code, arguments: [qerixGetKey:optdesc], [], [], [], [], [], [], []

how to deal with the issue.