Database Tuning (MOSC)

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SELECT FOR UPDATE

edited Jul 29, 2009 5:00AM in Database Tuning (MOSC) 2 commentsAnswered

originally posted by User5676 (but as a Document)

Hi,

How is it that a select for update query can consume 80% of the time of database, for making you wait?, the row lock contention  is the cause? but only one select for update could hang the db, because the following queries are made on the same row are awaiting. 

Thanks

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