ORA-07445 - SIGSEGV Address not mapped to object

 Hi all.
I am working with Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
on a Linux system

executing the following select I am getting an ORA-03113 Error (Connection lost).

looking at trace files I found a 'ORA-07445 Exception SIGSEGV ... Address not mapped to object' (look at trace files listed below for details)

Can anyone help me with this issue?

Select Statement:

/* Formatted on 2009/03/16 17:23 (Formatter Plus v4.8.8) */
SELECT /*+FIRST_ROWS(010)*/
       temp16.ROWID, temp16.satznr, temp16.vsnr, temp16.pkz, temp16.llfdnr,
       temp16.krl, temp16.aktnr, temp16.nepkz,
       NVL (gaktzwei001.gaktzwei, '                  '),
       NVL (gaktzwei002.gaktzwei, '                  '),
       NVL (gaktzwei003.gaktzwei, '                  '),