Survey of some free Tools to enhance your SQL Tuning and Performance Diagnostics skills
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Several free tools are available to help with SQL tuning and performance diagnostics, including SQLd360, SQLT, and eDB360. SQLd360 and SQLT are good for diagnosing a single SQL statement, while eDB360 provides a 360-degree view of an entire Oracle database. Snapper and TUNAs360 can diagnose sessions and database activity. Standalone scripts like planx and sqlmon provide specialized diagnostics for individual cases. These free tools vary in size and capabilities, but all aim to help tune and diagnose SQL and database performance issues.
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Survey of some free Tools to enhance your SQL Tuning and Performance Diagnostics skills
- 1. Survey of some free Tools to enhance your SQL Tuning and Performance Diagnostics skills Carlos Sierra
- 2. What is Performance Tuning?
- 3. Tuning and Performance Diagnostics SQL Tuning Database Performance
- 4. Tuning and Performance Diagnostics SQL Tuning Database Performance • One Page • One Report • One Program • One Process • One Query • One DML • Whole Database • Several Users • Multiple Transactions • Certain Times • Everything is slow!
- 5. Tools SQL Tuning Database Performance
- 6. Tools SQL Tuning Database Performance • SQL Trace • AUTOTRACE • EXPLAIN PLAN FOR • DBMS_XPLAN • SQL Monitor • Snapper • SQLTXPLAIN a.k.a. SQLT • SQLd360 • Enterprise Manager – OEM • AWR • Active Session History – ASH • Statspack • Snapper • TUNAs360 • eDB360
- 7. Cool Free Tools • Snapper • TUNAs360 • SQLT • SQLd360 • eDB360
- 8. Cool Free Scripts • planx • sqlash • sqlmon • sqlpch
- 9. Snapper
- 10. Snapper • 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
- 11. Parameters • 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
- 12. TUNAs360
- 13. TUNAs360 • (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
- 17. SQLT • 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
- 20. SQLd360 • 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
- 27. eDB360 • 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
- 31. eDB360 • Configuration • Resources • DBA stuff • Storage • ASM • Backup and Recovery • Plan Stability • CBO Stats • OS Metrics • Sessions • ASH • AWR
- 32. planx • Inputs one SQL_ID • Outputs – SQL Performance – DBMS_XPLAN – ASH aggregates – Indexes – CBO statistics
- 33. sqlash • Inputs one SQL_ID • Outputs ASH report
- 34. sqlmon • Inputs one SQL_ID • Outputs – SQL Monitor reports list – Active SQL Monitor report (one per execution) – Text SQL Monitor report for all executions
- 38. sqlpch • Inputs SQL_ID and list of CBO Hints – MONITOR, BIND_AWARE, GATHER_PLAN_STATISTICS • Outputs a SQL Patch
- 39. Size Tool • SQLT 6.8 MB • eDB360 4.4 MB • SQLd360 1.4 MB • TUNAs360 0.6 MB Script • snapper 165 KB • planx 50 KB • sqlpch 7 KB • sqlash 6 KB • sqlmon 5 KB
- 40. SQL Tuning Tools - Ranking 1. SQLd360 2. SQLT 3. Snapper 4. planx 5. sqlmon 6. sqlpch 7. sqlash
- 41. Performance Diagnostics Tools - Ranking 1. eDB360 2. TUNAs360 3. Snapper
- 42. 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
- 43. Questions
- 44. 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