Oracle OCI8 connection error

Rails
1

I’m trying to connect to a remote oracle database and I am receiving an
OCI Error (see below). Here is what I’ve done thus far:

  • I’ve added the most recent OCI8 gem for windows. It is in the
    C:\ruby\lib\ruby\1.8 folder.

  • I’ve installed Oracle’s instant client and set the TNS_ADMIN variable
    to the instant client path.

  • I’ve added the instant_client path to the windows path environment
    variable.

  • I’ve configured the database like this:
    adapter: oci
    username: my_db
    password: my_db
    host: //hostname.company.com:1521/my_sid

  • I do have a client tool which can access this database via jdbc and
    odbc, so I know the database can be accessed.

  • A test through Ruby versus RadRails reveals the same error.

I’ve done everything I can think of so any assistance will be
appreciated.

When trying to generate a scaffold I receive this error:

C:/ruby/lib/ruby/site_ruby/1.8/oci8.rb:49:in create': ERROR (OCIError) from C:/ruby/lib/ruby/site_ruby/1.8/oci8.rb:49 from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in require’
from
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/dependencies.rb:147:in
require' from C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/kernel/requires.rb:7:in require_library_or_gem’
from
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/kernel/reporting.rb:11:in
silence_warnings' from C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/kernel/requires.rb:5:in require_library_or_gem’
from
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-1.14.4/lib/active_record/connection_adapters/oracle_adapter.rb:29
from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
require' ... 10 levels... from ./script/../config/boot.rb:28 from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in require’
from ./script/destroy:2
from -e:3

2

yajiri wrote:

adapter: oci

C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/active_support/core_ext/kernel/requires.rb:7:in
require' ... 10 levels... from ./script/../config/boot.rb:28 from C:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:inrequire’
from ./script/destroy:2
from -e:3

I’ve found that I had multiple OCI gems, so I eliminated the one I
didn’t want. I now am able to build a scaffold but cannot access the
data.

Yajiri

3

Do you have any more details on the error message you get when you try
to
access the data?

Lori

4

yajiri wrote:

I’ve found that I had multiple OCI gems, so I eliminated the one I
didn’t want. I now am able to build a scaffold but cannot access the
data.

Try creating a tnsnames.ora file in the TNS_ADMIN directory and
referencing the host from that:

My database.yml:
development:
adapter: oci
username: username
password: password
host: ARCT01D

My tnsnames.ora:
ARCT01D =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = TAYLOR-DEV.domain.com)(PORT =
1521))
)
(CONNECT_DATA =
(SID = ARCT01D)
(SERVER = DEDICATED)
)
)

Dan M.

5

Thanks for the posts!

After frustrating myself enough for one day, I reverted backward a
version (I think it was 15) of the OCI8 gem and my connectivity is now
working. The messages in the error were none existant other than what
I provided before, which was a basic OCIError. I’ll leave it up to the
author now to correct the issue, which may be related to Windows XP
Professional. When I reach a production version, I’ll try again with
the latest version.

Thanks,
Yajiri