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nVision Performance Tuning

nVision Performance Tuning. David Kurtz Go-Faster Consultancy Ltd. david@go-faster.co.uk www.go-faster.co.uk. nVision. Performance Options Match Indexes to Analysis Criteria Oracle: choice of optimiser. PS/nVision. ledger analysis - special processing drill down

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nVision Performance Tuning

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  1. nVision Performance Tuning David Kurtz Go-Faster Consultancy Ltd. david@go-faster.co.uk www.go-faster.co.uk

  2. nVision • Performance Options • Match Indexes to Analysis Criteria • Oracle: choice of optimiser

  3. PS/nVision • ledger analysis - special processing • drill down • unroll roll-up reporting • analysis by attribute • attribute held in a tree • TREESELECTnn • generate matrix

  4. nVision ->options • Show Report SQL • See each SQL before it is executed • SQL Trace • Oracle Trace • 3-tier PSQRYSRV • from PT 7.54, 7.05

  5. Show Report SQL • Window appears just before the SQL that is contains is executed.

  6. SQL Statement SELECT L1.TREE_NODE_NUM, A.DEPTID, SUM(A.POSTED_TOTAL_AMT) FROM PS_LEDGER A, PSTREESELECT06 L, PSTREESELECT06 L1 WHERE A.LEDGER='ACTUALS' AND A.FISCAL_YEAR=1995 AND A.ACCOUNTING_PERIOD BETWEEN 1 AND 12 AND A.BUSINESS_UNIT='M04' AND L.SELECTOR_NUM=214 AND A.ACCOUNT>= L.RANGE_FROM_06 AND A.ACCOUNT <= L.RANGE_TO_06 AND ( L.TREE_NODE_NUM BETWEEN 1156779659 AND 1158898302 OR L.TREE_NODE_NUM BETWEEN 1224576269 AND 1288135590) AND L1.SELECTOR_NUM=216 AND A.PRODUCT=L1.RANGE_FROM_06 AND L1.TREE_NODE_NUM BETWEEN 658854164 AND 2000000000 AND A.DEPTID IN ('21200', '21300', '21401', '31000') AND A.CURRENCY_CD=’USD' AND A.STATISTICS_CODE=' ' GROUP BY L1.TREE_NODE_NUM, A.DEPTID

  7. Which trees SELECT L1.TREE_NODE_NUM, A.DEPTID, SUM(A.POSTED_TOTAL_AMT) FROM PS_LEDGER A, PSTREESELECT06 L, PSTREESELECT06 L1 WHERE A.LEDGER='ACTUALS' AND A.FISCAL_YEAR=1995 AND A.ACCOUNTING_PERIOD BETWEEN 1 AND 12 AND A.BUSINESS_UNIT='M04' AND L.SELECTOR_NUM=214 AND A.ACCOUNT>= L.RANGE_FROM_06 AND A.ACCOUNT <= L.RANGE_TO_06 AND ( L.TREE_NODE_NUM BETWEEN 1156779659 AND 1158898302 OR L.TREE_NODE_NUM BETWEEN 1224576269 AND 1288135590) AND L1.SELECTOR_NUM=216 AND A.PRODUCT=L1.RANGE_FROM_06 AND L1.TREE_NODE_NUM BETWEEN 658854164 AND 2000000000 AND A.DEPTID IN ('21200', '21300', '21401', '31000') AND A.CURRENCY_CD=’USD' AND A.STATISTICS_CODE=' ' GROUP BY L1.TREE_NODE_NUM, A.DEPTID

  8. Which trees • Use selector numbers from query to identify trees select * from pstreeselctl where selector_num in(214,216) SETID TREE_NAME EFFDT VERSION SELECTOR_NUM SELECTOR_ T LENGTH ----- ------------------ --------- ---------- ------------ --------- - ---------- MFG MFG_PRODUCTS 01-JAN-00 44787 216 03-AUG-99 R 6 MFG ACCTROLLUP 01-JAN-00 45057 214 02-AUG-99 R 6

  9. Without performance options

  10. With performance options

  11. Security for performance options

  12. nVision Performance Options

  13. Resultant SQL SELECT L1.TREE_NODE_NUM, A.DEPTID, SUM(A.POSTED_TOTAL_AMT) FROM PS_LEDGER A, PSTREESELECT06 L1 WHERE A.LEDGER='ACTUALS' AND A.FISCAL_YEAR=1995 AND A.ACCOUNTING_PERIOD BETWEEN 1 AND 12 AND A.BUSINESS_UNIT='M04' AND ( A.ACCOUNT='400000' OR A.ACCOUNT BETWEEN '401000' AND '403000' OR A.ACCOUNT='410000' OR A.ACCOUNT='420000' OR A.ACCOUNT='499999') AND L1.SELECTOR_NUM=216 AND A.PRODUCT=L1.RANGE_FROM_06 AND L1.TREE_NODE_NUM BETWEEN 658854164 AND 2000000000 AND A.DEPTID IN ('21200', '21300', '21401', '31000') AND A.CURRENCY_CD='USD' AND A.STATISTICS_CODE=' ' GROUP BY L1.TREE_NODE_NUM, A.DEPTID

  14. Appropriate Index LEDGER single value FISCAL_YEAR single value ACCOUNTING_PERIOD range of values BUSINESS_UNIT one value ACCOUNT some values/ranges PRODUCT equi-joined to L1 DEPTID some values CURRENCY_CD one value STATISTICS_CODE one value grouped by L1.TREE_NODE_NUM, DEPTID

  15. Appropriate Index FISCAL_YEAR single value DEPTID some values LEDGER single value BUSINESS_UNIT single value PRODUCT equi-joined to L1 ACCOUNT some values/ranges CURRENCY_CD single value STATISTICS_CODE single value ACCOUNTING_PERIOD range of values grouped by L1.TREE_NODE_NUM, DEPTID

  16. Oracle Optimiser Mode • Queries are flat - no correlated sub-queries • Rule based optimiser follows the links • Cost based optimiser, sometimes doesn’t • GL nVision queries perform well under Cost Base Optimiser

  17. If using Oracle Rule Based Optimiser • Rename PSTREESELECTnn to PSTREESELECTnn_TBL CREATE VIEW PSTREESELECTnn AS SELECT /*+ALL_ROWS*/ * FROM PSTREESELECTnn_TBL

  18. If using Oracle 8.x • The Cost Based Optimiser in invoked by • Parallelism • Partitioning

  19. Non-Ledger queries • Query is defined in PS/Query

  20. nVision • Performance Options • Match Indexes to Analysis Criteria • Oracle: choice of optimiser • non-GL queries are different

  21. nVision Performance Tuning David Kurtz Go-Faster Consultancy Ltd. david@go-faster.co.uk www.go-faster.co.uk

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