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How To Resolved ORA-12560: TNS:protocol Adapter Error When Trying To Login To Sqlplus (Doc ID 2403190.1)

Last updated on MAY 24, 2018

Applies to:

Oracle Agile Product Collaboration - Version 9.3.6.0 and later
Information in this document applies to any platform.

Goal

How to resolve ORA-12560: TNS:protocol adapter error when trying to login to sqlplus.

SQL*Plus: Release 12.1.0.2.0 Production on Mon May 21 17:27:07 2018

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Enter user-name: agile/tartan
ERROR:
ORA-12560: TNS:protocol adapter error

Solution

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