Oracle dead with unknown reason -

our oracle database dies time time. when log in alert, shows following exception:

exception [type: sigsegv, address not mapped object] [addr:0xfffffffeaa7dd0e0] [pc:0x8213123, kslgetl()+111] [flags: 0x0, count: 1] ora-07445: [kslgetl()+111] [sigsegv] [addr:0xfffffffeaa7c58c0] [pc:0x8213123] [address not mapped object] [] dde: problem key 'ora 7445 [kslgetl()+111]' flood controlled (0x6) further messages problem key suppressed 10 minutes errors in file /home/oracle/app/oracle/diag/rdbms/orcl/sdh/trace/sdh_p104_2581.trc  (incident=82376): ora-00600: internal error code, arguments: [ksl_invalid_latch], [kslges], [0x2aff2f2d8], [], [], [], [], [], [], [], [], [] 

any ideas?

we find problem caused out of memory. when there not enough memory, oracle behave or cause os system hang. believe stored procedure caused problem.