ORA-07445 [gsignal()+53] While Using Shared Server with Dead Connection Detection

(Doc ID 1998589.1)

Last updated on APRIL 25, 2015

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 to 11.2.0.3 [Release 11.2]
Information in this document applies to any platform.

Symptoms

The following error is reported in the database alert.log:

ORA-07445: exception encountered: core dump [gsignal()+53] [SIGIOT] [ADDR:0x26F00006E06] [PC:0x3DAF42FFC5] [unknown code] []


The alert log also shows messages like 'dead shared server..', e.g.:

...
Process 0x0x1a612e27c8 appears to be hung while dumping
Current time = 936727454, process death time = 936663713 interval = 60000
Attempting to kill process 0x0x1a612e27c8 with OS pid = 24628
OSD kill succeeded for process 0x1a612e27c8
found dead shared server 'S015', pid = (39, 82)
...


The call stack from the shared server incident trace file written by the error includes the following functions:

... gsignal abort libc_message int_free cfree nadisc nsnadisc nsclose nioqds upidhs kpudtch OCIServerDetach kfnDisconnectPriv kfnTryDestroyConn ksu_dispatch_tac kmcgms kmcdget kmcdrcv opikndf2 opitsk opiino ...

 

Cause

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