ORA-7445 With Either Function: [NSTIMEXP] or [SNSTIMSANE]

(Doc ID 282453.1)

Last updated on DECEMBER 10, 2016

Applies to:

Oracle Net Services - Version to [Release 8.1.7 to 11.2]
Oracle Database - Enterprise Edition - Version to [Release 8.1.7 to 11.2]
Information in this document applies to any platform.
This issue can occur in any version below 12.1 where DCD or SQLNET.EXPIRE_TIME is in place.


The following error messages are found in alert.log:

ORA-07445: exception encountered: core dump [nstimexp()+38] [SIGSEGV]
found dead dispatcher 'D001', pid = (12, 1)

The Dispatcher process core dumps and trace files are generated.


The following message might occur for dedicated connections:

ORA-07445: exception encountered: core dump [snstimsane()+43] [SIGSEGV]
[Address not mapped to object] [0x000000000] [] []
ORA-03135: connection lost contact



Dead Connection Detection (DCD) may have been recently enabled in this environment.  Check for the existence of the SQLNET.EXPIRE_TIME  parameter in the sqlnet.ora file that is local to the instance or in the listener's environment.


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