Download - Oracle 10g Performance: chapter 03a oem demo
EM Tuning Demo
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Four Tuning Paths
Database Home Page
Performance Page
Drilldowns
SQL Session
ADDM Page
Solutions
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Path 1
Database Home Page
Performance Page
Drilldowns
SQL Session
ADDM Page
Solutions
Actions
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Database Home Page
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ADDM Details
Solution ASSMSolution ASSM
Solution 2: PartitioningSolution 2: Partitioning
Solution 3: Free ListsSolution 3: Free Lists
TablespaceTablespace
ObjectObject
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Path 2
Database Home Page
Performance Page
Drilldowns
SQL Session
ADDM Page
Solutions
Actions
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Database Home Page
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ADDM Page
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ADDM Details
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EM Product Layout for Performance
Database Home Page
Performance Page
Drilldowns
SQL Session
ADDM Page
Solutions
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Database Home Page
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Database Performance Page
Lots of waitsLots of waits
ADDM ReportADDM Report
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ADDM Page
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ADDM Details
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EM Product Layout for Performance
Database Home Page
Performance Page
Drilldowns
SQL Session
ADDM Page
Solutions
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Database Performance Page
““click on the click on the big stuff”big stuff”
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Wait Drilldown : Concurrency
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SQL Drilldown
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Session Drilldown
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Session : Wait History
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Part II – Taking ADDM Advice 10 users inserting concurrently into same table
insert into toto1 values (t,lpad('a',1000,'a'));insert into toto1 values (t,lpad('a',1000,'a'));
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Test 1
Elapsed Time 14:44Elapsed Time 14:44
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ADDM Details
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ADDM Says
Use ASSM Use Freelists Partition Object
Trying out Freelists
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Test 2
Elapsed Time 14:59Elapsed Time 14:59
Was 14:44 – now slower! Was 14:44 – now slower!
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ADDM Details
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ADDM says
Increase Log File Size to 2000M to hold at least 20 minutes of redo
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Test 3
Elapsed 1:23Elapsed 1:2314:4414:44 14:5914:59
Elapsed Time 1:23Elapsed Time 1:23
10x Improvement! 10x Improvement!
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Final ADDM Details
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Final
Commit every 50 records instead of every record Got elapsed down from
1:23 0:47
Copyright 2006 Kyle Hailey
In Review
By usingFree ListsLarge Redo Log files
Job Processing went fromOver 14 minutes toJust over 1 minute
Thanks to ADDM and OEM 10g !