[Company Logo Image] 

Home Up Contents Coffee Break Credits Glossary Links Search

 ORA-12545 Connection failed
 

 

 

Home
Analysis Services
Azure
CLR Integration
High Availability
Open Source
Security
SQL Server 2008
SQL Server 2012
SQL Server 2014
SQL Server 2016
Tips
Troubleshooting
Tuning

ORA-12545 Connection failed because target host or object does not exist.


Applies to: SQL Server Migration Assistant (SSMA) for Oracle.
 

Problem Description.
 

You are using SQL Server Migration Assistant (SSMA) 2005 for Oracle and you are receiving the following error when trying to get connected to Oracle:

ORA-12545 Connection failed because target host or object does not exist.


Cause.


Please make sure you have configured the tnsnames.ora file.

If you have configured the tnsnames.ora file, and you have multiple Oracle tools installed on Windows, then you may have multiple Oracle homes and tnsnames.ora files on your computer. SSMA may not be using the one you need it to use.

Please determine if the Oracle service can be reached successfully using the tnsping utility.


.


 

 

.Send mail to webmaster@sqlcoffee.com with questions or comments about this web site.