Install Ingres
To install Ingres, see the Ingres installation instructions for your platform.
During the installation process, the DBMS Server setup asks whether all databases are to be upgraded; answer No. The installation procedure automatically upgrades the iidbdb. If the upgrade of iidbdb fails, see the chapter “Troubleshooting Upgradedb.” It is better to complete the Ingres setup, and then use the upgradedb command to upgrade the user databases.
After the iidbdb is upgraded, the DBMS Server setup attempts to upgrade imadb and install Remote Command Server objects into imadb. Some versions of upgradedb neglect to create imadb first, and you will get “Database does not exist: imadb” errors. These will be corrected in the next step.
How You Upgrade to Older Versions That Require a Patch
Newer versions of Ingres distribute service packs. You can install service packs without having to install a base release of Ingres first.
UNIX: If you are upgrading to an older Ingres version that requires an overlay patch instead of a service pack, follow this procedure:
1. Run ingbuild. When asked whether you want to set up all the Ingres components, respond No. Exit ingbuild.
2. Install the Ingres patch.
3. Run ingbuild again. Select Current, then SetupAll.
4. Follow the prompts to complete the Ingres setup.
Setup now uses the fixed version. 
Last modified date: 11/28/2023