FAQ: Is PostgreSQL supported with ArcSDE 9.2?
Is PostgreSQL supported with ArcSDE 9.2?
PostgreSQL is not supported with ArcSDE 9.2. The documentation updates for ArcGIS 9.2 Help (installed), Service Packs 3 and 4, mistakenly contain information about using ArcSDE with PostgreSQL. However, this is not a supported database for the ArcGIS 9.2 release.
The ArcGIS 9.2 Desktop Web Help, (http://webhelp.esri.com/arcgisdesktop/9.2/), contains the most up-to-date 9.2 information.