Comments on: New support for Rails 2.1

By: Matteo

Matteo — Mon, 29 Sep 2008 12:59:10 +0000

I can use ibm_db also to connect to db2 on a iSeries server? And I can specify alsoa default library?

Thanks

By: Nick

Nick — Sun, 14 Sep 2008 20:45:17 +0000

Those of you who use the command ‘apt-get install db2exc’ to install the latest version of DB2 Express-C 9.5 (‘db2exc-9.5.0-2′) on Ubuntu will need to manually remove the broken header file links found in the /usr/include directory, and run ‘db2ln’ (found in the /cfg directory) to re-create the header links.

By: howardb

howardb — Sat, 16 Aug 2008 17:24:37 +0000

DB2 permits the creation of numerous database engines, called ‘Database Managers’ (or INSTANCE), on the same server.

Each engine is completely independent to enable these operational characteristics:
- each runs under a different ‘owner’ account — in your example this is db2inst1
- each can be started and stopped independently or else be a non-running ‘client’ instance
- each can be managed independently and have independent administration groups
- each can be a separate version or patch level or run a different edition of the product
- each can manage one or more different databases and/or catalog a different set of remote database environments

The db2profile script located under ~INSTANCE/sqllib/db2profile sets up all the environment variables (e.g. PATH, DB2INSTANCE, etc.) in order to access that particular INSTANCE.

You must use this script to ‘choose’ the instance that your runtime environment will use.

To avoid the inconvenience, since you only have one instance, you could add the one-line entry into your shell startup profile, or insert this into the script used to start your webserver.

I hope this helps. howardb

By: blahzay

blahzay — Wed, 02 Jul 2008 13:34:41 +0000

I’m new to DB2 so a few things are confusing me at the moment. So I’ve gotten DB2 and Rails playing nice together for the most part. However, one of the things that is confusing me is that Rails throws the error:

Failed to connect to the [railsapp] due to: [IBM][CLI

Driver] unless I issue the command:

. /home/db2inst1/sqllib/db2profile

using the same console that I start up webbrick.

I realize this command is setting up the environment for DB2 to run in. This is may only be but a minor inconvenience while developing. However how do I get my app to run without throwing the error in a production environment. I’m used to just being able to install mysql and forget about it and it seems like DB2 requires a lot more hand holding to function properly. What am I missing?