I can confirm we have just experienced the same thing after applying the Oracle October 2014 Patch Set Update. We have temporarily rolled back to the previous previous patch set update and it is working again. We have raised a ticket with ESRI. ArcGIS 10.1 Oracle 11.2.0.4 (linux x86_64) Glad i found your post (though not glad you're also experiencing problems) as that way we know it isn't something unique to our setup/environment.
... View more