ORA-07445: CORE DUMP [KGNFSWAT()+62] [SIGSEGV] with NFS 4.1 And DNFS being Used (Doc ID 2180613.1)

Last updated on SEPTEMBER 20, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

The issue was seen while starting the database with oranfstab file updated with version 4.1

alert_orcl.log
==============
Starting ORACLE instance (normal) (OS id: 325)
Wed Jul 08 15:07:20 2015
CLI notifier numLatches:29 maxDescs:528
Wed Jul 08 15:07:20 2015
**********************************************************************
.
.
NOTE: remote asm mode is local (mode 0x1; from cluster type)
Wed Jul 08 15:07:21 2015
Oracle instance running with ODM: Oracle Direct NFS ODM Library Version 3.0 <<
......
......
Wed Jul 08 15:07:25 2015
ALTER DATABASE MOUNT
Wed Jul 08 15:07:25 2015
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x7FFFC0F1A9C8] [PC:0xB72E57E, kgnfswat()+62] [flags: 0x0, count: 1]
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ckpt_2133.trc (incident=28921):
ORA-07445: exception encountered: core dump [kgnfswat()+62] [SIGSEGV] [ADDR:0x7FFFC0F1A9C8] [PC:0xB72E57E] [Address not mapped to object] []
Incident details in:
/u01/app/oracle/diag/rdbms/orcl/orcl/incident/incdir_28921/orcl_ckpt_2133_i28921.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Wed Jul 08 15:07:27 2015
Dumping diagnostic data in directory=[cdmp_20150708150727], requested by (instance=1, osid=2133 (CKPT)), summary=[incident=28921].
Wed Jul 08 15:07:28 2015
Sweep [inc][28921]: completed
Sweep [inc2][28921]: completed
Wed Jul 08 15:07:31 2015
Instance Critical Process (pid: 15, ospid: 2133, CKPT) died unexpectedly
PMON (ospid: 2039): terminating the instance due to error 469
Wed Jul 08 15:07:31 2015
System state dump requested by (instance=1, osid=2039 (PMON)), summary=[abnormal instance termination].
System State dumped to trace file
/u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_diag_2119_20150708150731.trc
Wed Jul 08 15:07:31 2015
Dumping diagnostic data in directory=[cdmp_20150708150731], requested by (instance=1, osid=2039 (PMON)), summary=[abnormal instance termination].
Wed Jul 08 15:07:32 2015
Instance terminated by PMON, pid = 2039


 

orcl_ckpt_2133_i28921.trc

==================

----- Incident Context Dump -----
Address: 0x7f54edd4c678
Incident ID: 28921
Problem Key: ORA 7445 [kgnfswat]
Error: ORA-7445 [kgnfswat] [SIGSEGV] [ADDR:0x7FFFC0F1A9C8] [PC:0xB72E57E]
[Address not mapped to object] [] [] [] [] [] [] []
[00]: dbgexExplicitEndInc [diag_dde]
[01]: dbgeEndDDEInvocationImpl [diag_dde]
[02]: dbgeEndDDEInvocation [diag_dde]
[03]: ssexhd []
[04]: sslsshandler []<-- Signaling
[05]: __sighandler []
[06]: kgnfswat []
[07]: kgnfsexecnfsproc []
[08]: kgnfs_create_session []
[09]: kgnfs_renew_state []
[10]: kgnfs_processmsg []
[11]: kgnfs_getmsg []
[12]: kgnfswat []
[13]: kgnfsexecnfsproc []
[14]: kgnfs_create_session []
[15]: kgnfs_renew_state []
[16]: kgnfs_processmsg []
[17]: kgnfs_getmsg []
[18]: kgnfswat []
[19]: kgnfsexecnfsproc []
[20]: kgnfs_create_session []
[21]: kgnfs_renew_state []
[22]: kgnfs_processmsg []
[23]: kgnfs_getmsg []
[24]: kgnfswat []
[25]: kgnfsexecnfsproc []
[26]: kgnfs_create_session []
[27]: kgnfs_renew_state []
[28]: kgnfs_processmsg []
[29]: kgnfs_getmsg []
[30]: kgnfswat []
[31]: kgnfsexecnfsproc []
[32]: kgnfs_create_session []
[33]: kgnfs_renew_state []
[34]: kgnfs_processmsg []
[35]: kgnfs_getmsg []
[36]: kgnfswat []
[37]: kgnfsexecnfsproc []
[38]: kgnfs_create_session []
[39]: kgnfs_renew_state []
[40]: kgnfs_processmsg []
[41]: kgnfs_getmsg []
[42]: kgnfswat []
[43]: kgnfsexecnfsproc []
[44]: kgnfs_create_session []
[45]: kgnfs_renew_state []
[46]: kgnfs_processmsg []
[47]: kgnfs_getmsg []
[48]: kgnfswat []
[49]: kgnfsexecnfsproc []

Cause

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