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Nov 27, 2014 at 13:07 comment added Albert Godfrind I agree that there are probably all kinds of dependencies between an application (like ArcGIS) and database version and word size. But Dean (the OP) only talks about problem connecting to a database. You are right that the error Dean gets could be some application-specific error. Still he should first make sure the base database connectivity works. Good point about the iptables firewall. I assumed (maybe incorrectly) that this Linux database is already used by a number of other applications from a variety of servers (so the proper port would be open).
Nov 26, 2014 at 11:55 comment added Vince No, ArcGIS does not support all versions of Oracle between 8i and 12c -- Each release has a limited set of supported server versions. Application word size does make a difference, as Esri has only supported 64-bit servers since ArcGIS 10, and Desktop clients require 32-bit Oracle libraries. You should also mention that the Linux iptables firewall must be configured to allow connection through SQL*Net port 1521 (or whichever non-default port was chosen).
Nov 26, 2014 at 9:14 history edited Albert Godfrind CC BY-SA 3.0
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Nov 26, 2014 at 9:05 history answered Albert Godfrind CC BY-SA 3.0