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I tried to connect to my Oracle database and entered the correct password and received the following messages:

Former Member
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Failed to open the connection.

Details: ORA-12154: TNS: could not resolve the connect identifier

  1. unspecified.

(Database Vendor Code 12154)

Failed to open connection

Details: (Database Vendor Code 12154)

About Crystal Reports:

CR Developer


Product Type: Full

This product is registered to : Aluminum Precision Products

Registration Number: 8886439509

Keycode: CFK00-EFRZS2M-00UFAFF-N43M

The location of my TNSNAMES:



# tnsnames.ora Network Configuration File: D:\oracle\product\10.2.0\client_1\network\admin\tnsnames.ora

# Generated by Oracle configuration tools.

Accepted Solutions (0)

Answers (2)

Answers (2)

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First thing to do is upgrade your original release of CR 2008 to current Service Pack 6.

Likely fix the problem.


Active Contributor
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Please search first...

Type the following string into the search box at the top right corner:

crystal oracle 12154

When the results come up, yo may want to filter them for KBAs by clicking on "Support Notes" link under Assets (left side of the screen).

- Ludek

Senior Support Engineer AGS Product Support, Global Support Center Canada

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