ORA-07445 [_memset] [SIGSEGV] and PMON Terminated the Instance
(Doc ID 1223333.1)
Last updated on JANUARY 16, 2020
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 and later
Oracle Database Cloud Schema 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
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.
*** Checked for relevance on 26-Apr-2013 ***
Database terminated by PMON with the following errors:
ORA-07445: exception encountered: core dump [_memset()+120] [SIGSEGV] [ADDR:0xFFFFFFFF7FFF5C28] [PC:0xFFFFFFFF7C700F78] [Address not mapped to object] 
ORA-00490: PSP process terminated with error
PMON (ospid: 24602): terminating the instance due to error 490
If we look in Call Stack Trace section of the trace file generated by the error, we can find the following functions:
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