单选题You need to resolve the blocking issue that is affecting the performance of the CRM system. What should you do?（）AReplace the named query with an SQL view.BSet the transaction isolation level to serializable in the named query.CSet the source database to use snapshot isolation.DSet the transaction isolation level to repeatable read in the named query.
单选题
You need to resolve the blocking issue that is affecting the performance of the CRM system. What should you do?（）
A
Replace the named query with an SQL view.
B
Set the transaction isolation level to serializable in the named query.
C
Set the source database to use snapshot isolation.
D
Set the transaction isolation level to repeatable read in the named query.
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