Upgrade with Informix

Purpose

You can take measures to reduce the downtime caused by upgrade of the Informix database. Upgrading the Informix database is normally performed before an SAP System upgrade. The downtime involved depends on the level of upgrade you are performing. An upgrade from version 7.00 X to version 7.00 Y can take as little as 15 minutes whereas an upgrade from Informix version 6 to version 7 takes much more time since internal data structures are altered.

You can find more information on upgrading the Informix database on SAP Service Marketplace at:

service.sap.com/instguides ® Other Documentation ® Database Upgrades

Process Flow

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       1.      You read the upgrade documentation.

This helps to avoid unexpected problems during the upgrade.

       2.      You plan the upgrade carefully.

Rather than simply starting the upgrade and hoping for the best, plan the procedures involved in advance. Make sure that all the resources (that is, people and equipment) are available.

       3.      You rehearse the upgrade using a test system.

The best preparation of all is to rehearse the upgrade fully using a test system that is as similar to the production system as possible.

Result

You can now upgrade the database with the minimum possible downtime.

See also:

Upgrade to Version x of the Informix Dynamic Server: UNIX

Upgrade to Version x of the Informix Dynamic Server: Windows NT

You can find the above documentation on SAP Service Marketplace at:

service.sap.com/instguides ® Other Documentation ® Database Upgrades