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Don Burleson Blog 







Oracle throughput per second Tips

Oracle Database Tips by Donald BurlesonNovember 16, 2015

Question:  I need to to see a measure of I/O throughout for my Oracle database in rows per second.  Is there a report that gives you rows per second processing?

Answer: No, you cannot see rows/second processing numbers directly, but you can see throughout in bytes/per second.  This is a section of an AWR/STATSPACK report that shows I/O throughput in rows per second:


Performance Summary

Physical Reads:


MB per second:

0 MB/sec

Physical Writes:


MB per second:

0.01 MB/sec

Single-block Reads:


Avg wait:

1.34 ms

Multi-block Reads:


Avg wait:

0.99 ms

Tablespace Reads:





These statistics also give you a measurement of database throughput.


Statistic                                     Total     per Second     per Trans
-------------------------------- ------------------ -------------- -------------

physical write total bytes            4,197,654,528       48,569.8       7,646.4

physical write total multi block            567,826            6.6           1.0

physical writes                              97,593            1.1           0.2

physical writes direct                          619            0.0           0.0

physical writes direct (lob)                      8            0.0           0.0

physical writes direct temporary                496            0.0           0.0

physical writes from cache                   96,974            1.1           0.2

sorts (rows)                            223,622,390        2,587.5         407.4

table fetch by rowid                      5,319,020           61.5           9.7

table fetch continued row                     1,393            0.0           0.0

table scan blocks gotten                125,639,526        1,453.7         228.9

table scan rows gotten               24,486,570,172      283,326.7      44,604.5

table scans (long tables)                        18            0.0           0.0

table scans (short tables)                  490,377            5.7           0.9

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Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

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