Last updated on DECEMBER 28, 2016
Applies to:
Oracle Net Services - Version 11.1.0.6 to 12.1.0.2 [Release 11.1 to 12.1]Information in this document applies to any platform.
TNS-12170, ORA-12170, TNS-12535, TNS-00505 alert.log
Symptoms
nt secondary err code: 110 Monitoring of the 11g database Alert log(s) may show frequent timeout related messages such as:
- On Oracle Solaris:
***********************************************************************
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for Solaris: Version 11.2.0.1.0 - Production
Oracle Bequeath NT Protocol Adapter for Solaris: Version 11.2.0.1.0 - Production
TCP/IP NT Protocol Adapter for Solaris: Version 11.2.0.1.0 - Production
Time: 22-JAN-2011 21:48:23
Tracing not turned on.
Tns error struct:
ns main err code: 12535
TNS-12535: TNS:operation timed out
ns secondary err code: 12560
nt main err code: 505
TNS-00505: Operation timed out
nt secondary err code: 145
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=10.xxx.yy.117)(PORT=1092))
---------
The "nt secondary err code" will be different based on the operating system.
Linux x86 or Linux x86-64: "nt secondary err code: 110"
HP-UX Server: "nt secondary err code: 238"
AIX: "nt secondary err code: 78"
Changes
No changes are necessary, but may have recently upgraded the database to 11g release 1 or higher, or installed a new Oracle11g database.
Note: Prior to 11gR1 these same 'Fatal NI connect error 12170' are written to the sqlnet.log
Cause
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