Solving the TOra 2.1.1 Missing Error Description

I recently got rid of my old TOra installation and replaced it with the newer TOra 2.1.1.  Every time I tried to connect to an Oracle database, I get a "Unable to connect to the database. ORA-27749784 missing error description." as shown below.

Solution:  

Delete the oci.dll in your TOra directory e.g. C:\Program Files\TOra.

I have Oracle 10g client installed on my desktop.  I believe TOra references the oci.dll in the Oracle Client's bin directory e.g. C:\oracle\product\10.2.0\client_1\BIN.  If you copy the oci.dll in this bin directory to the TOra directory, it will work the same way.

About TOra
http://www.torasql.com
TOra is an open-source multi-platform database management GUI that supports accessing most of the common database platforms in use, including Oracle, MySQL, and Postgres, as well as limited support for any target that can be accessed through Qt's ODBC support. TOra has been built for various Linux distributions, Mac OS X, MS Windows, and UNIX platforms [source: torasql.com].