Software test interview question: how to find problems related to the database?

How to find problems related to the database ?

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       ① By running some corresponding acquired SQL sentence , Determine whether the transaction response caused by the database index is too long .
       
       

       
       

       
       
② Through real-time monitoring tools (nmon etc. ) Monitoring analysis ：
       
       

       
       

       
       
Ⅰ. During the operation of the system, its CPU Whether it operates stably or CPU Is the consumption too high ;
       
       

       
       

       
       
Ⅱ. Whether there is memory leakage in the memory during the operation of the system ;
      
      
      
      

       
       
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