14 Replies Latest reply: Aug 22, 2010 10:30 PM by 783956 RSS

    ORA-12154: TNS:could not resolve the connect identifier specified [10g XE]

    793025
      Greetings

      There are many topics on this issue over the internet but None of them addresses this issue properly, so I couldn't find a solution to the problem.

      I installed: Oracle Database 10g Express Edition

      After the installation was done, I opened SQL Command Line
      and I used the command "connect" to login
      I enter the username
      Then I entered the password

      After a couple of seconds I got the following ERROR message:
      ORA-12154: TNS:could not resolve the connect identifier specified

      Screenshot of the error:
      http://i35.tinypic.com/14o26g7.png

      I installed this version of Oracle on both Windows XP 32 bit and Windows 7 32 bit and I get the same error message when it tries to connect.

      Why doesn't Oracle work right after the installation?
      Are there any further steps that need to be done in order to make this work? If so I would really appreciate any step by step help, I've been stuck trying to find a solution for days.

      Edited by: user10192105 on Aug 22, 2010 7:34 PM