Survey of some free Tools
to enhance your SQL Tuning and Performance
Diagnostics skills
Carlos Sierra
What is Performance Tuning?
Tuning and Performance Diagnostics
SQL Tuning
Database Performance
Tuning and Performance Diagnostics
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SQL Tuning
One Page
One Report
One Program
One Process
One Query
One DML
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Database Performance
Whole Database
Several Users
Multiple Transactions
Certain Times
Everything is slow!
Tools
SQL Tuning
Database Performance
Tools
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SQL Tuning
SQL Trace
AUTOTRACE
EXPLAIN PLAN FOR
DBMS_XPLAN
SQL Monitor
Snapper
SQLTXPLAIN a.k.a. SQLT
SQLd360
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Database Performance
Enterprise Manager – OEM
AWR
Active Session History – ASH
Statspack
Snapper
TUNAs360
eDB360
Cool Free Tools
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Snapper
TUNAs360
SQLT
SQLd360
eDB360
Cool Free Scripts
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planx
sqlash
sqlmon
sqlpch
Snapper
Snapper
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By Tanel Poder
Installs nothing
10g to 12c
No dependencies on Diagnostics or Tuning Packs
Mimics ASH by sampling gv$session
Samples also
– gv$sesstat, gv$sess_time_model, gv$session_event
Parameters
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Seconds between snaps (i.e. 5)
Number of snaps (i.e. 12)
Session IDs to snap
Many other options
– @snapper ash 5 1 144
– ASH mode, 5 seconds between snaps, one snap only,
on session 144
TUNAs360
TUNAs360
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(TUN)ing with (A)ctive (s)essions
By Mauro Pagano
Installs nothing
10g to 12c
No dependencies on Diagnostics or Tuning Packs
No execution parameters
Outputs HTML reports and Google Charts
SQLT
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By Carlos Sierra, Mauro Pagano and Abel Macias
Oracle Support standard
Installs two schemas and several objects
10g to 12c
Inputs one SQL_ID
Outputs one large HTML report
Better output having Diagnostics or Tuning Packs
SQLd360
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By Mauro Pagano
Installs nothing
10g to 12c
Inputs one SQL_ID
Outputs small HTML reports and Google Charts
Better output having Diagnostics or Tuning Pack
eDB360
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By Carlos Sierra
Installs nothing
10g to 12c
360-degree view of an entire Oracle Database
Outputs small HTML reports and Google Charts
Better output having Diagnostics or Tuning Packs
eDB360
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Configuration
Resources
DBA stuff
Storage
ASM
Backup and Recovery
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Plan Stability
CBO Stats
OS Metrics
Sessions
ASH
AWR
planx
• Inputs one SQL_ID
• Outputs
– SQL Performance
– DBMS_XPLAN
– ASH aggregates
– Indexes
– CBO statistics
sqlash
• Inputs one SQL_ID
• Outputs ASH report
sqlmon
• Inputs one SQL_ID
• Outputs
– SQL Monitor reports list
– Active SQL Monitor report (one per execution)
– Text SQL Monitor report for all executions
sqlpch
• Inputs SQL_ID and list of CBO Hints
– MONITOR, BIND_AWARE, GATHER_PLAN_STATISTICS
• Outputs a SQL Patch
Size
Tool
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SQLT
eDB360
SQLd360
TUNAs360
Script
6.8 MB
4.4 MB
1.4 MB
0.6 MB
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snapper
planx
sqlpch
sqlash
sqlmon
165 KB
50 KB
7 KB
6 KB
5 KB
SQL Tuning Tools - Ranking
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SQLd360
SQLT
Snapper
planx
sqlmon
sqlpch
sqlash
Performance Diagnostics Tools - Ranking
1. eDB360
2. TUNAs360
3. Snapper
Summary
• Diagnose one SQL statement
– Use SQLd360, else SQLT
• Diagnose an entire Oracle Database
– Use eDB360, else TUNAs360
• Diagnose one session or set of sessions (or all)
– Use snapper
• Use stand-alone scripts for special or small cases
Questions
References
• Snapper
– http://blog.tanelpoder.com
• TUNAs360 and SQLd360
– https://mauro-pagano.com
• SQLTXPLAIN a.k.a. SQLT: MOS 215187.1
• eDB360 and stand-alone scripts
– https://carlos-sierra.net