Supported upgrade paths for Db2 servers

You must understand the supported upgrade paths for Db2 servers before you upgrade your Db2 environment.

If you are upgrading from Db2 version 10.5 or Db2 version 11.1, follow the upgrade plan that is detailed in Planning to upgrade Db2 servers.

If you are upgrading a Db2 pureScaleĀ® instance from a Db2 version 10.5 or Db2 version 11.1 installation, follow the upgrade steps that are detailed in Upgrading a Db2 pureScale server.

If you are upgrading from a Db2 release earlier than version 10.5, upgrade to Db2 version 10.5, and then upgrade to Db2 version 11.5.

Table 1. Upgrade paths
  version 11.5 single partition Enterprise Server Edition version 11.5 multiple partition version 11.5 with Db2 pureScale Feature
version 10.5 or version 11.1 single partition Enterprise Server Edition Yes Yes Yes
version 10.5 or version 11.1 multiple partition Yes. You must drop all but one partition before or after you upgrade the instance to version 11.5. Yes Yes. However, you cannot upgrade an instance from version 11.5 multi-partition Enterprise Server Edition directly to a Db2 pureScale instance. You must first consolidate data on a single partition before or after you upgrade the instance and database to version 11.5 and then convert the single partition Enterprise Server Edition instance to Db2 pureScale instance.
version 10.5 or version 11.1 Db2 pureScale Feature No No Yes