Preventive Service Planning
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Upgrading your DB2® pureScale® environment to Version 10.5 might require upgrading your environment components. These components are DB2 servers, data clients, database applications, and routines. Upgrading these components requires an understanding of the DB2 database product upgrade concepts, the DB2 pureScale feature, and the DB2 database products.
Your first point of reference for learning how to upgrade each component of your DB2 pureScale environment and how to create an upgrade plan is the Upgrading to DB2 Version 10.5 guide. The content of this guide is available in the DB2 Information Center. The highest level topic is Upgrade to DB2 Version 10.5.
Table of Contents
To convert existing Version 10.5 instances, see Convert instances to the DB2 pureScale Feature.
Ensure that you meet the installation requirements for the DB2 pureScale Feature in Version 10.5 as described in Installation requirements for DB2 database products. For details on how to use the db2prereqcheck command to verify the installation requirements, see Checking installation prerequisites with db2prereqcheck.
Review changes in Version 10.5 from existing functionality in previous releases that can affect your DB2 environment upgrade:If you are upgrading from DB2 Version 9.7 to Version 10.5, changes to existing functionality between the Version 9.7 and Version 10.1 releases can also affect your DB2 environment upgrade. Review the following topic to determine whether you need to manage the effect of these changes: Discontinue using functionality that is unsupported in Version 10.5. If you are upgrading from DB2 Version 9.7 or DB2 Version 9.8, also discontinue using functionality that is unsupported in Version 10.1.
There is no utility to fall back to a previous release after upgrading your DB2 servers. Refer to the Planning section for details.
Planning your DB2 environment upgrade requires you to determine a strategy on how to approach your DB2 environment upgrade and create an upgrade plan that includes all of the upgrade process details.
Determine all of the upgrade process details for each component in your environment that you need to know to write your upgrade plan.
For each component, you must include in your upgrade plan:
Review APARs and known issues related to upgrading to DB2 Version 10.5 in the Troubleshooting section. If these issues impact your DB2 environment upgrade, add the actions on how to resolve these issues to your upgrade plans.
To fall back to a previous release after upgrading your DB2 servers, add details to your upgrade plan about the tasks required to reverse a DB2 server upgrade. These details should include any steps required in the upgrade task that enables you to reverse an upgrade.
Plan on how to discontinue the use of deprecated functionality.
Consider upgrading your DB2 servers, clients, database applications, and routines in a test environment to learn how to address any issues that might arise during the upgrade process and to evaluate the impact of changes introduced in DB2 Version 10.1. Also in a test environment, you can determine the length of time and the disk space requirements needed to upgrade your database to DB2 Version 10.1, which are essential in developing an upgrade plan and performing a successful DB2 environment upgrade.
Adopting new DB2 Version 10.5 functionality
Review support for features and capabilities from previous releases that has been added for DB2 pureScale environments:
For a complete list of DB2 pureScale enhancements, see the following topics:
Review new features and capabilities in Version 10.5 that you can adopt to enhance your upgraded databases and improve performance. Here are some of the new features and capabilities available in DB2 Version 10.5 that you can also use in DB2 pureScale environments:
Follow the upgrade plan for your environment. The DB2 upgrade process for each component of your environment is described on the following topics:
The upgrade process for each component includes: