title: Oracle dead with unknown reason
body: <p>Our Oracle database dies from time to time. When I look into the log in the alert, it shows following Exception:</p>
  
  <pre><code>Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0xFFFFFFFEAA7DD0E0] [PC:0x8213123, kslgetl()+111] [flags: 0x0, count: 1]
  ORA-07445: [kslgetl()+111] [SIGSEGV] [ADDR:0xFFFFFFFEAA7C58C0] [PC:0x8213123] [Address not mapped to object] []
  DDE: Problem Key 'ORA 7445 [kslgetl()+111]' was completely flood controlled (0x6)
  Further messages for this problem key will be suppressed for up to 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], [], [], [], [], [], [], [], [], []
  </code></pre>
  
  <p>Any ideas?</p>