Bug: Oracle deadlocks occur while editing a versioned ArcSDE geodatabase during periods of high database activity
** This issue is addressed in ArcSDE 9.1 Service Pack 1 (SP1) **
If the database is working under a heavy load, such as a large number of users accessing it and/or a large number of operations are being performed, edit sessions may encounter Oracle deadlocks.
All rows in all state lineages are being updated any time one lineage is edited.
Click on the link in Related Information below to download the Service Pack, if necessary. **