My Oracle Support Banner

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

Last updated on AUGUST 04, 2018

Applies to:

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


After applying or to an existing 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 and as well


Application of or to existing install.

Also on higher versions than


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.