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ORA-3136 Errors from Oracle Database running in Windows server due to WinPrvSE.exe program (Doc ID 1495790.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version and later
Generic Windows


++ Several "WARNING: inbound connection timed out (ORA-3136)" error messages in database alert log.

++ In Sqlnet.log,the similar errors were logged

Fatal NI connect error 12170.

TNS for 64-bit Windows: Version - Production
Oracle Bequeath NT Protocol Adapter for 64-bit Windows: Version - Production
Windows NT TCP/IP NT Protocol Adapter for 64-bit Windows: Version - Production
 Time: 09-JUL-2012 10:52:38
 Tracing not turned on.
 Tns error struct:
   ns main err code: 12535
   TNS-12535: TNS:operation timed out
   ns secondary err code: 12606
   nt main err code: 0
   nt secondary err code: 0
   nt OS err code: 0
 Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=xx.xx.xx.xx)(PORT=xxxx))


++ Database Listener log shows that the process "WinPrvSE.exe" was trying to login during the same time.

++ Enabling sqlnet server traces shows the following entries



 SYSTEM User Account password was changed recently.


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