Spring Datasource and Database Schema

Question

Hi

I am trying to declare a Spring datasource pointing to a DB2 database. Presently I am using a org.springframework.jdbc.datasource.DriverManagerDataSource to setup the connection but am not finding any way to specify the database schema in the database in the datasource bean. Could anyone help me on this?

Answer 1

There isn't a means to do this with the standard Spring namespace. Rob Harrop's response to a request to add the schema to the configuration:

In general, this kind of functionality should be pushed into the connection pool since there is no really elegant and performant way to do this via a decorator. The pool can set the schema once per connection it creates, whereas here you have to set it each time a connection is retrieved.

If you're desperate to set the proxy in your configuration, the submitter included some code for a proxy to allow the schema to be specified.

Answer 2

Problem is there is no standard way to set the schema, each database has a different mechanism.

A work around is to set the schema as part of the db url...

For db2 the url will look something like:

jdbc:db2://SERVER_NAME:PORT/DATABASE:currentSchema=SCHEMA_NAME;

hope that helps...

Answer 3

If your connection uses the owner of the schema as the user then that connection will point to that particular schema. ie. If user user1 is the owner of the database schema named schema1 then if you connect to the database using user user1 then by default the connection will point to schema1.

We have used UserCredentialsDataSourceAdapter provided by spring to connect to different schemas based on the logged in user. This provides a datasource which is pointing to a particular schema based on the user. This uses a thread based login information. Each thread has to decide to which schema it has to connect and provide the user according to that.