[单选] 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.

将校长的办学理念转化为全校教职员工的共识，是学习型组织建设的（）。体育教学模式由（）、（）、（）三要素组成。 Which two statements are true regarding transactions in an Oracle database（） Multiple transactions can use the same undo segment.。 A transaction is assigned an undo segment when it is started.。 More than one transaction cannot share the same extent in the undo tablespace.。 The transactions use system undo segment to store undo data if all the segments in the undo tablespaceare used.。偏航制动器的作用是什么？当日单笔或累计交易人民币现金（）元以上应当提交大额交易报告。 20万。 3万。 5万。 1万。 You need to resolve the blocking issue that is affecting the performance of the CRM system. What should you do?（）

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[单选] You need to resolve the blocking issue that is affecting the performance of the CRM system. What should you do?（）

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