ORA-7445 [_memcmp()+160] [SIGSEGV] No Connection Possible from Application

(Doc ID 375788.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Server - Enterprise Edition - Version: and later   [Release: 10.2 and later ]
Information in this document applies to any platform.
***Checked for relevance on 10-Jan-2012***


ora-7445 [_memcmp()+160] [SIGSEGV] [Address not mapped to object] [0xD00000020] [] []

occurs very frequently in alert.log. No connection from application is possible. Connection from SQLPLUS is possible.

stack trace:
ksedst ksedmp ssexhd memcmp kpzgkvl kziaia kpolnb kpolon opiodr ttcpip opitsk


Migrate from 9.2 to


Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms