The OWB team has clearly heard the masses and responded to their difficulty in installing and getting “up and running” with OWB. I have to think back to those first few days of head scratching over the installation and “quick” start guides to remember how tough it was to just get to a point where you’re building tables and composing mappings. Thinking back it seems painless but as I’ve observed at customers and conferences alike there are great difficulties and a learning curve to installing OWB. Smart, intelligent DBAs and BI architects had to spend some amount of time to understand the concepts to get going.
Previously there were numerous steps (I believe the OWB team mentioned a total of 60 steps, but those included “double click on this” and the like). They’ve been simplified by the consolidation of the two repositories. OWB veterans are aware there were previously two primary repositories that one interacts with to get things done. There was the DESIGN repository which held the metadata, ETL definitions, table structures, etc Then there was the RUNTIME repository which invoked and audited the acutal flows, mappings, and deployments being executed. Beyond that, every schema that was going to execute any mappings, or have any data objects also required the installation of a TARGET runtime components so the runtime repository could execute and monitor ETL in that schema. In a stage/warehouse/multiple mart setting, this sometimes meant stepping through the Repository Assistant many times (24 times at one of my customers for a set of development/stage/production environments).
OWB10g Paris consolidates the two primary repositories (DESIGN and RUNTIME) into one unified repository. This greatly eases the burden of installation, which can be done from a simple “New User” wizard on the client. During my testing of the product, we were working with a single database so I was not able to test a multiple database installation. The OWB product team indicates that the original topology is still available for customers wishing to use only portions of certain repositories (ie, use one design, with development/testing/production runtimes).
There is also an augmented OWB user security, permissions, and role based system that supports another great feature of OWB installation. Target schemas (which often make up the bulk of installation time in new environments) allow for new target schemas to be added as a simple afterthought with on the last screen of an add User wizard. OWB objects now have permissions and can be assigned throttled permissions (full ctl, edit, read) by both user and role.
It was noted by OWB product team that the security provided in OWB is enforced for access to the metadata, not the actual deployed objects. If one restricts the “Customer” table in OWB to only those with “INTERNAL_EMPLOYEES” this means that only those users in INTERNAL_EMPLOYEES are allowed to utilized, examine, and otherwise edit the CUSTOMER OWB table. When that table is generated and deployed, it is then subject to the normal Oracle permissions and OWB does not have a method for managing that.
My fellow testers echoed the sentiment that if OWB is really positioning itself to be an inclusive, central location for BI work in an enterprise it will also need to figure out how to capture security and access rules. OWB team product team acknowledged need… We’ll see if it ends up in a major revision or two out.
This blog is part of the OWB Paris Early Review series which reviews and comments on several new Paris features.