TROUBLESHOOTING "ORA-03135: connection lost contact" from ODP.NET connections with connection pooling enabled (Doc ID 578000.1)

Last updated on MAY 24, 2017

Applies to:

Oracle Data Provider for .NET - Version 10.2.0.1.0 and later
Microsoft Windows (32-bit)
Microsoft Windows x64 (64-bit)

***Checked for relevance on 24-May-2017***

Symptoms

ODP.NET applications that have connection pooling enabled (which is the default) may intermittently experience the following error:

ORA-03135: connection lost contact

Cause

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