I was doing re-org of fragmented tables in an Oracle 10.2.0.4 production database:
sys@CLARITY> ALTER TABLE SOP_QUEUE ENABLE ROW MOVEMENT; Table altered sys@CLARITY> ALTER TABLE SOP_QUEUE SHRINK SPACE CASCADE; ERROR at line 20: ORA-03113: end-of-file on communication channel
When I checked the alert log, I found the following error:
ORA-07445: exception encountered: core dump [ktsk_get_prevl2()+217] [SIGSEGV] [Address not mapped to object] [0x2E97317530]  
What could be the reason for this error, as I am unable to find a proper solution?