How was this problem resolved? Was the gx/gy distribution a contributing factor? We have a similar issue that has lead us to make the IX2 Oracle index invisible for during the daytime read only Arcmap and ArcGIS services. We have scheduled processes that make the IX2 indexes visible only for the period when we are running the replication sync from our edit database to the publication database (nightly). This allows the deletes from the spatial index to occur efficiently. We are running ArcGIS 10.0 SP4 on Oracle 11.2.0.1.0
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