![Create
XPLORE
Script
Parameters
•
•
•
•
•
XPLORE
Method:
[
XECUTE
|
XPLAIN
]
Include
CBO
Parameters:
[
Y
|
N
]
Include
Exadata
Parameters:
[
Y
|
N
]
Include
Fix
Control:
[
Y
|
N
]
Generate
SQL
Monitor
Reports:
[
N
|
Y
]
11/12/13
Enkitec
(c)
19](https://image.slidesharecdn.com/sqltxplore-thesqltxplainhiddenchild-131112120549-phpapp02/85/SQLT-XPLORE-The-SQLT-XPLAIN-Hidden-Child-19-320.jpg)
SQLT XPLORE - The SQLT XPLAIN Hidden Child
- 1. SQLT XPLORE The SQLT XPLAIN Hidden Child Carlos Sierra -‐ Enkitec
- 2. Carlos Sierra • • • • Enkitec Consultant Oracle Performance SQL Tuning PL/SQL 11/12/13 Enkitec (c) 2
- 3. SQLT XPLORE • • • • IntroducDon Input and Output Screen Shots Demo 11/12/13 Enkitec (c) 3
- 4. SQLTXPLAIN (SQLT) • • • • • Free SQL Tuning Tool Oracle 10g to 12c Linux/UNIX/Windows Available @ MOS 215187.1 Includes SQLT Test Case (TC) and XPLORE 11/12/13 Enkitec (c) 4
- 5. SQLT Test Case (TC) • Metadata to create a SQL Tuning test case – SQL Text with bind variables and their values – Schema Objects creaDon script – CBO StaDsDcs – Schema Objects mapping 11/12/13 Enkitec (c) 5
- 6. What is SQLT XPLORE? • Brute Force stand-‐alone module • Under sqlt/utl/xplore out of sqlt.zip • Acts on top of a SQLT TC – Or any SQL on a Test System • Discovers several ExecuDon Plans 11/12/13 Enkitec (c) 6
- 7. XPLORE Mechanics • Iterates over – CBO Parameters and Fix Control • For each iteraDon – Executes input SQL – Captures Plan • Reports Summary 11/12/13 Enkitec (c) 7
- 8. XPLORE Input and Output • Inputs one script with one SQL • Outputs a zip with – HTML Report – SQL Monitor zip – Staging SQL Script – ExecuDon Log 11/12/13 Enkitec (c) 8
- 9. XPLORE HTML Report • • • • • Plans Summary Discovered Plans Baseline Completed Tests for each Plan ExecuDon Plans 11/12/13 Enkitec (c) 9
- 10. SQL Monitor ZIP • Only on 11g • Requires Oracle Tuning Pack – Controlled by XPLORE execuDon parameter • You may need to embed /*+ MONITOR */ hint • One SQL Monitor Report for each iteraDon 11/12/13 Enkitec (c) 10
- 11. 11/12/13 Enkitec (c) 11
- 12. When to use XPLORE? • SQL performance analysis – Afer a database sofware upgrade • Bad Plan is reproducible on Test System • Good Plan can be obtained using OpDmizer Features Enabled (OFE) set to prior release • You want to narrow reason of regression 11/12/13 Enkitec (c) 12
- 13. MulDple Uses • SQL Performance Regression afer Upgrade • Long Parse Time Analysis • Wrong Results Analysis – DiagnosDc of Query TransformaDons Errors • Discover effect of “disabled” fixes • Find a beler performing Plan 11/12/13 Enkitec (c) 13
- 14. When NOT to use XPLORE? • When your SQL to be analyzed may corrupt or update data • When using XPLORE with data and each iteraDon takes more than a few seconds 11/12/13 Enkitec (c) 14
- 15. XPLORE Prerequisites • Create a SQL Script with one SQL – Binds are allowed • SQL on script must include /* ^^unique_id */ • Script must be capable to execute stand alone • SQL may or may not return rows – XPLORE works with and without data 11/12/13 Enkitec (c) 15
- 16. XPLORE InstallaDon • Place your input SQL Script into sqlt/utl/xplore • Execute sqlt/utl/xplore/install.sql as SYS • Input test case user and its password – XPLORE will be executed as test case user 11/12/13 Enkitec (c) 16
- 17. Uninstalling XPLORE • Execute sqlt/utl/xplore/uninstall.sql as SYS • Provide test case user when asked 11/12/13 Enkitec (c) 17
- 18. XPLORE use • • • • • Navigate to sqlt/utl/xplore/ Connect as the test case user Set the CBO environment (opDonal) Execute create_xplore_script.sql Execute dynamically generated xplore_script 11/12/13 Enkitec (c) 18
- 19. Create XPLORE Script Parameters • • • • • XPLORE Method: [ XECUTE | XPLAIN ] Include CBO Parameters: [ Y | N ] Include Exadata Parameters: [ Y | N ] Include Fix Control: [ Y | N ] Generate SQL Monitor Reports: [ N | Y ] 11/12/13 Enkitec (c) 19
- 20. XPLORE Script Parameters • Script to be executed on each iteraDon – Script must reside on sqlt/utl/xplore – Must contain /* ^^unique_id */ – Must be capable of stand-‐alone error-‐free exec • Password for test case user – Each iteraDon re-‐connects and sets CBO env (opt) 11/12/13 Enkitec (c) 20
- 21. Input tc.sql Sample 11/12/13 Enkitec (c) 21
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- 23. 11/12/13 Enkitec (c) 23
- 24. Input q1.sql Sample 11/12/13 Enkitec (c) 24
- 25. 11/12/13 Enkitec (c) 25
- 26. 11/12/13 Enkitec (c) 26
- 27. Input q2.sql Sample 11/12/13 Enkitec (c) 27
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- 30. 11/12/13 Enkitec (c) 30
- 31. Input q3.sql Sample 11/12/13 Enkitec (c) 31
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- 34. Demo Time 11/12/13 Enkitec (c) 34
- 35. References • SQLTXPLAIN (SQLT) – MOS 215187.1 11/12/13 Enkitec (c) 35
- 36. Carlos Sierra Contact Info • carlos.sierra@enkitec.com • csierra_usa • carlos-‐sierra.net 11/12/13 Enkitec (c) 36