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ORA-7445 [ksxpunmap()] May Be Caused by Underlying ORA-3115 on RAC (Doc ID 452025.1)

Last updated on JANUARY 29, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 9.0.1.4 to 10.2.0.3 [Release 9.0.1 to 10.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

The alert log shows the following error:

  • ORA-07445: exception encountered: core dump [ksxpunmap()+1696] [SIGSEGV] [Address not mapped to object] [0x000000008] [] []

The trace file contains the following text:

  • opitsk: network error occurred while two-task server trying to send break; error code = 3115 Exception signal: 11 (SIGSEGV), code: 1 (Address not mapped to object), addr: 0x8, PC: [0x10117ed40, ksxpunmap()+1696] ksedmp: internal or fatal error ORA-07445: exception encountered: core dump [ksxpunmap()+1696] [SIGSEGV] [Address not mapped to object] [0x000000008] [] [] Current SQL information unavailable - no session.

The complete call stack follows:

  • ksedmp ssexhd sighndlr call_user_handler 000000056354B4D0 kclnfy kscnfy ksucrp opiino opiodr opidrv sou2o opimai_real main start

These elements of the call stack match the bug:

  • kclnfy kscnfy ksucrp opiino opiodr opidrv sou2o opimai_real main

Changes

 NONE

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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