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I would do a 10046 trace so to be sure what the statement is actually doing.
Couple of questions...
1- How many rows out of the total number of rows on the table is supposed to delete the statement?
2- I assume there is an index on the column_name used on the predicate of the delete statement - if this is the case, are table and index statistics up to date?
Hope this helps.
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
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