If you are upgrading to DB2 OLAP Integration Server Version 8.1 from a previous release, you should assess several system environment and data migration issues before installing the new software.
The following tasks cannot be completed until after you have installed Essbase Integration Services:
DB2 OLAP Integration Server architecture concentrates ODBC driver configuration solely on the computer that runs DB2 OLAP Integration Server. With this architecture, you do not have to configure ODBC drivers for client computers that run Essbase Integration Services Console or worry about upgrading ODBC drivers on clients.
If you use the MERANT Version 3.6 ODBC drivers supplied with earlier versions, you may want to preserve the older drivers for compatibility with other applications. In general, however, you should upgrade the ODBC drivers to the versions provided with the latest release of Essbase Integration Services. DB2 OLAP Integration Server Version 8.1 supports MERANT Version 4.0 ODBC drivers.
DB2 OLAP Integration Server Version 8.1 does not support MERANT Version 3.6 ODBC drivers.
The directory structure provided with DB2 OLAP Integration Server Version 8.1 lets you to retain and continue to use older versions of MERANT drivers without the need to install DB2 OLAP Integration Server to a new location.
If you have an existing OLAP Metadata Catalog from an earlier version of DB2 OLAP Integration Server, you must upgrade it before using the OLAP Metadata Catalog with the current release of the software.
You cannot upgrade an existing OLAP Metadata Catalog until after you have completed the installation process. The Essbase Integration Services setup program installs the scripts that are needed for the upgrade (see Upgrading the OLAP Metadata Catalog).
To upgrade an existing OLAP Metadata Catalog, perform the following tasks: