Problem with generating a scaffold with an Oracle DB

Rails
1

Hi all,

I have confgured my oracle application with the Oracle Express
Production release database. This all is configured well and tested(I
can see that he founds the database). However, when I generate a
scaffold application there is no view for the CRUD functions created for
the application.
Below is listed what is generated for me for a Products table:

E:\workdir\ruby\depot>ruby script/generate scaffold Product Admin
exists app/controllers/
exists app/helpers/
create app/views/admin
exists test/functional/
dependency model
exists app/models/
exists test/unit/
exists test/fixtures/
create app/models/product.rb
create test/unit/product_test.rb
create test/fixtures/products.yml
ORA-12537: TNS:connection closed

What is the problem here, because according to my tutorial in the fine
book “Agile webdevelopment with Rails” it should create view components.

Does anyone see the problem here?

Thanks in advance!

-Tom

2

Hey Tom,

Looks like a problem connecting to Oracle. The ‘ORA-12537:
TNS:connection closed’ is an Oracle error.

Have you tried just generating a model and starting the console to
check connectivity?

try this:

ruby script/generate model Product

when done start up the console:

ruby script/console

p = Product.new
p.save

See if you get an error message on the ‘p.save’ line. You may want
to check that Oracle is allowing connections from remote hosts.

According to ora-code.com, ora-12537 is defined as:

ORA-12537: TNS:connection closed
Cause: ‘End of file’ condition has been reached; partner has
disconnected.
Action: None needed; this is an information message.

Hope this helps.

-wilig

3

William G. wrote:

Hey Tom,

Looks like a problem connecting to Oracle. The ‘ORA-12537:
TNS:connection closed’ is an Oracle error.

Have you tried just generating a model and starting the console to
check connectivity?

try this:

ruby script/generate model Product

when done start up the console:

ruby script/console

p = Product.new
p.save

See if you get an error message on the ‘p.save’ line. You may want
to check that Oracle is allowing connections from remote hosts.

According to ora-code.com, ora-12537 is defined as:

ORA-12537: TNS:connection closed
Cause: ‘End of file’ condition has been reached; partner has
disconnected.
Action: None needed; this is an information message.

Hope this helps.

-wilig

Hi Wilig,

I have already solved the problem. The settings in my database.yml where
not the same as in the tnsnames.ora file of my DB installation.

The problem is now fixed and everythings works perfectly