11203单点On Red Hat AS release 4 (Nahant Update 8) x86 with ORA-609

钱多多

有一台Oracle 11203 x86的服务器，部署在Red Hat Enterprise Linux AS release 4 (Nahant Update 8) x86上，近期频繁出现连不上，随后实例自行崩溃的情况。

OS：RHEL 4.8 x86
Mem：8G
Oracle： 11.2.0.3 x86，单点

检查Alert日志后发现，频繁出现下面这样的日志，然后就实例消失。重新登录sqlplus并正常startup，库能正常使用。

Fatal NI connect error 12170.

  VERSION INFORMATION:
        TNS for Linux: Version 11.2.0.3.0 - Production
        Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.3.0 - Production
        TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.3.0 - Production
  Time: 11-JUL-2013 16:43:43
  Tracing not turned on.
  Tns error struct:
    ns main err code: 12535
   
TNS-12535: TNS:operation timed out
    ns secondary err code: 12560
    nt main err code: 505
   
TNS-00505: Operation timed out
    nt secondary err code: 110
    nt OS err code: 0
  Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=1.2.3.4)(PORT=44598))
Thu Jul 11 16:43:58 2013

---------------------------------------------------------------------------------------------------------------------------

Fatal NI connect error 12547, connecting to:
(LOCAL=NO)

  VERSION INFORMATION:
        TNS for Linux: Version 11.2.0.3.0 - Production
        Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.3.0 - Production
        TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.3.0 - Production
  Time: 12-JUL-2013 11:10:02
  Tracing not turned on.
  Tns error struct:
    ns main err code: 12547
   
TNS-12547: TNS:lost contact
    ns secondary err code: 12560
    nt main err code: 0
    nt secondary err code: 0
    nt OS err code: 0

opiodr aborting process unknown ospid (6936) as a result of ORA-609

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数据库的alert日志