Answer / p.gangi reddy

The Ratio between number of times hits to the buffer &
number of times response come from the buffer....

Answer / venkyrepala

Hit ratio of database(ST04) is calculated as

NO.OF LOGICAL READS-NO.OF PHYSICAL READS/PHYSICAL READS*100

IT SHOULD BE GREATER THAN 94%

IN CASE OF ST02(R/3) BUFFERS IT SHOULD BE >98%

IN ST02 SWAPS SHOULD NOT MORE THAN 20000

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