Connections Fail Reporting TNS-12500 TNS-12546 32-bit Windows Error: 5: Input/output error

(Doc ID 1525751.1)

Last updated on MARCH 05, 2018

Applies to:

Oracle Net Services - Version 9.2.0.5 and later
Oracle Database - Enterprise Edition - Version 9.0.1.3 to 9.0.1.3 [Release 9.0.1]
Generic Windows

Symptoms

Connections to Windows database via TNS listener, start to fail reporting error code TNS-12500.
Bequeath connections on the server work fine

Cause

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