Connections Fail Reporting TNS-12500 TNS-12546 32-bit Windows Error: 5: Input/output error (Doc ID 1525751.1)

Last updated on MARCH 22, 2013

Applies to:

Oracle Net Services - Version 9.2.0.5 and later
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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