ORA-7445 With Either Function: [NSTIMEXP] or [SNSTIMSANE]
(Doc ID 282453.1)
Last updated on MARCH 06, 2019
Applies to:Oracle Net Services - Version 22.214.171.124.0 to 126.96.36.199 [Release 8.1.7 to 11.2]
Oracle Database - Enterprise Edition - Version 188.8.131.52 to 184.108.40.206 [Release 8.1.7 to 11.2]
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
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:
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:
[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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