dating gay manila - Sql server lock table while updating
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Do you think it’s a good idea to add UPDLOCK hint to the table which will be modified in an update query?
Many people will say NO because it seems to be redundant.
All of us know that SQL Server uses row level locking. indication that one of the child objects (row/key in our case) has the exclusive lock. same indication about child object (row/key) exclusive lock.
Let’s think about scenario when system modifies the row. And finally exclusive (X) lock on the key (row) we just inserted.
To help identify which tables or stored procedures are causing deadlock problems, turn on trace flag 1204 (outputs basic trace data) or trace flag 1205 (outputs more detailed trace data).