单选题

You are maintaining your OLTP database in Oracle10g. While observing the performance of the database, you find that the log switch occurs more than once for every 20 minutes, affecting the database performance. Which factor is responsible for frequent log switches?()  

Athe value of the UNDO_RETENTION initialization parameter

Bthe value of the optimal redo log file size provided by the Redo Logfile Size Advisor

Cthe online redo log files size

Dthe number of redo log members in a group

正确答案

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