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SGA and PGA size

monojNov 25 2015 — edited Sep 2 2016

Hi All,

My database version is 11.2.0.4

My OS version is SUSE Linux Enterprise Server 11 SP3

Physical RAM is 252 .

Please help me in understanding the below part of AWR.

Begin Snap:28425-Nov-15 00:00:13490  134.2
End Snap:31126-Nov-15 03:00:57486  142.0
Elapsed:   1,620.74 (mins)
DB Time:   2,526.19 (mins)

Report Summary

Load Profile

Per SecondPer TransactionPer ExecPer Call
DB Time(s):  1.6  0.1  0.00  0.00
DB CPU(s):  0.4  0.0  0.00  0.00
Redo size (bytes):  917,615.9  41,306.1
Logical read (blocks):  49,851.4  2,244.0
Block changes:  2,963.2  133.4
Physical read (blocks):  13,955.6  628.2
Physical write (blocks):  132.9  6.0
Read IO requests:  995.0  44.8
Write IO requests:  54.9  2.5
Read IO (MB):  109.0  4.9
Write IO (MB):  1.0  0.1
User calls:  1,660.8  74.8
Parses (SQL):  60.0  2.7
Hard parses (SQL):  0.2  0.0
SQL Work Area (MB):  7.4  0.3
Logons:  0.1  0.0
Executes (SQL):  1,556.0  70.0
Rollbacks:  0.1  0.0
Transactions:  22.2

Also please see the below memory part.

Memory Statistics

BeginEnd
Host Mem (MB):  258,341.7  258,341.7
SGA use (MB):  29,819.1  29,819.1
PGA use (MB):  1,785.1  1,784.2
% Host Mem used for SGA+PGA:  12.23  12.23

Cache Sizes

BeginEnd
Buffer Cache:  15,360M  15,360MStd Block Size:  8K
Shared Pool Size:  12,822M  12,757MLog Buffer:  58,336K

Shared Pool Statistics

BeginEnd
Memory Usage %:  17.13  25.74
% SQL with executions>1:  98.17  98.50
% Memory for SQL w/exec>1:  97.52  97.62

Please suggest if sga_max_size needs to be increase.

Regards

Monoj

This post has been answered by Jonathan Lewis on Nov 27 2015
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Locked on Dec 27 2015
Added on Nov 25 2015
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