振荡时，需要闭锁的保护有（ ）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69493' and id < 4501545 and id<>'4501545' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69493' and id > 4501545 and id<>'4501545' order by id asc limit 5