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News On Oracle OLAP, AWXML and AWM2
September 7, 2004
Mark Rittman

The patchset for Oracle 10g is now available on MOSC, patch number 3761843. It's a 448MB download and is available now for MS Windows, Intel Linux, and a few of the 64-bit Unices. There are two corresponding OLAP patches; OLAP patch (patch number 3769360) which Oracle recommend should be applied to all existing installations - both client and server - and a patch, due out at the end of September, along with version two of the Analytic Workspace Manager.

The patch introduces a couple of items of new functionality to Oracle OLAP:

  • The existing AWM is upgraded to AWM, with  users no longer being required to manually enable the analytic workspace for query by the OLAP API. Dynamic enablement automatically creates compatible SQL views over the analytic workspace even if you change the logical model.
  • AWM uses the new AWXML feature for query access, with the forthcoming AWM2 switching over completely to AWXML for defining and loading AW objects.

Although the patch looks interesting, the major change for 10g OLAP is coming with the patch, which introduces all the features outlined in Mike Ault's 10g OLAP article and Anthony Waites comments earlier in the year on the OTN OLAP Forum. Oracle OLAP, through it's use of AWXML and AWM2, will allow analytic workspaces to be created directly from Oracle relational tables, or flat files using the external tables feature, without the intermediate step of creating a CWM1-compliant ROLAP cube. In addition, AWM2 will support new features that have been introduced with 10g OLAP, including multi-writer support, partitioning and compression, and will have a big emphasis on users who are 'data dabblers', making it easier to create and populate analytic workspaces.

The patch, and AWM2, are scheduled to be made available around 30th September.

As all of this will make the current 10g OLAP documentation out of date, the OLAP DML Guide is being be re-edited and should be available within a week. The OLAP Reference and App Developer's Guide are being overhauled for and will be available by the end of the month. Then again for, the App Developer's Guide will be updated.

Thanks to Anthony Waite for making the information available on the OTN OLAP Forum.

UPDATE: Looks like the Windows and Linux versions of the patch have been removed from MOSC, and the OLAP patch requires a password to download. More news when we work out what's gone on...

UPDATE: MOSC Note 281209.1. explains why the patch was pulled. Apparently it's a problem with CLOBs and NCLOBs on little-endian (i.e. Windows + Intel Linux) machines. New patch to be issued soon. Doesn't look as if there'll be problems if you've installed the old version, unless you're in certain double-byte territories, and you use CLOBs and NCLOBs, although it'll be best to re-download the patch when it's available, and install that instead, if you've not already moved to

UPDATE: The patch is up again on MOSC, and available to download. Note however that you'll need a password from Oracle Support to download the OLAP Patch.


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