Informix Dynamic Server 11: Advanced Functionality for Modern Business

38 Informix Dynamic Server 11: Advanced Functionality for Modern Business

2.1 How to get to IDS 11

IDS 11 is the path forward for all previous versions of the Informix Dynamic

Server. Many installations of IDS 11 will be upgrades to earlier versions of IDS,

other versions of Informix database servers, or even other database servers. It

makes sense then to talk about migration and upgrade paths first.

2.1.1 In-place upgrades

One of the wonderful things about administering Informix database servers is

that there is always a graceful way to move from one version to another. In most

cases, the upgrade occurs in place with the old instance shut down, the new

binaries loaded, and the instance restarted. The upgrade is complete. The

unspoken assumption is that installation and testing occurred first on a test or

development server.

Depending on the current version of the database server, moving to IDS 11 can

occur through an in-place upgrade. Other versions or even other Informix servers

require an interim step. The paths to IDS 11 are:

򐂰 IDS 7.31, 9.21, 9.30, 9.40, or 10.00: It is a direct upgrade. You can install IDS

11, then shut down the instance, reset the environment to point to the IDS 11

software, and restart the instance. IDS 11 recognizes the older data and

adjusts things as necessary.

򐂰 IDS 7.30 or 7.24 without Enterprise Replication: You must move to either IDS

9.40 or 10.00 before moving to IDS 11. Between these earlier versions and

more current versions, a large number of structural changes occurred, not all

of which are visible to an administrator. Make these changes to instance and

database structures prior to moving to IDS 11.

򐂰 IDS 7.24 with replication: You must move to IDS 7.31 first.

򐂰 IDS 9.14 or 9.20: You must move to IDS 9.21 or 9.30 before moving to IDS

11.

򐂰 XPS 8.x except 8.21U: You must move to IDS 7.24 before moving to IDS 11.

򐂰 XPS 8.21U: You must move to IDS 7.24 without replication before moving to

IDS 11.

򐂰 OnLine 5.x: You must move to IDS 7.31 first.

Important: That assumption is extremely important. Never install any

software upgrade into production without first testing the process and

application thoroughly.