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Alternatives to tnsnames.ora File 

Expert Oracle Database Tips by Donald BurlesonDecember 29, 2015

Question: I have a large set of systems and a very large tnsnames.ora file that is getting hard to manage.  

Are there alternatives to using tnsnames.ora which you would recommend?

Answer:  Yes, there are several options for tnsnames.ora management, depending on your version:

  •  Use local naming: tnsnames.ora
  • Use external naming: This is similar to Network Information Service (NIS)
  • Use a propagation software package:  This will blast changes in tnsnames.ora to all affected clients
  •  Place a common tnsnames.ora on shared disk and set your global tns_admin variable to point to this location

Some of these options are version specific and might not apply to more recent releases.  For example, ONS does not exist in the last couple of releases.  If your set of systems spans a number of versions, that will also limit your options.

 
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