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Applying 11.2.0.2 or 11.2.0.3 patch in place to existing 11.2.0.1 installation overwrites sqlnet.ora (Doc ID 1484154.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Provider for OLE DB - Version 11.2.0.2 and later
Oracle Database - Enterprise Edition - Version 11.2.0.2 and later
Oracle ODBC Driver - Version 11.2.0.2 and later
SQL*Plus - Version 11.2.0.2 and later
Oracle Net Services - Version 11.2.0.2 and later
Information in this document applies to any platform.

Symptoms

After applying 11.2.0.2 or 11.2.0.3 to an existing 11.2.0.1.0 installation, it may be noticed that

This behavior may affect all tools, such as SQLPlus, ODBC, ODP.NET, OLEDB, OCI, JDBC-OCI, etc.

The slow connection behavior may be much more noticeable  if using LDAP for naming resolution.

This behavior is observed in higher versions like 12.1.0.1 and 12.1.0.2 as well

Changes

Application of 11.2.0.2 or 11.2.0.3 to existing 11.2.0.1 install.

Also on higher versions than 11.2.0.3.0.

Cause

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