1. SQL*Fingerprints David Kurtz www.go-faster.co.uk
Go-Faster Consultancy Ltd.
Go-Faster Consultancy Ltd.

2. Who am I? Book DBA www.psftdba.com System Performance tuning
Independent consultant
System Performance tuning
PeopleSoft ERP
Oracle RDBMS
UK Oracle User Group
Unix SIG
Oak Table
Book
If who are into PeopleSoft I have written this book.
For those of you who are not familiar with PeopleSoft. E-business suite is Oracle’s legacy ERP system and it will be replaced with PeopleSoft!
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3. Resources If you can’t hear me say so now.
Please feel free to ask questions as we go along.
The presentation will be available from
Further reading:
Chapter 11 of PeopleSoft for the Oracle DBA
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4. Performance Tuning What is Performance Tuning? Response Time
Often down to poor SQL
Oracle RDBMS
V$ views, SQL*Trace
PeopleTools SQL Trace
PeopleCode headers
PeopleSoft Performance Monitor
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5. Oracle RDBMS SQL*Trace
Trace batch processes via trigger
Enable trace on PSAPPSRV processes
List of all the SQL Statements
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6. Where does the SQL Come From?
Most performance tools will identify poor SQL
But they won’t tell you who or what submitted it
Unless the application is instrumented
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7. Tuning without code changes
Database Parameters
Indexes
Hints via Stored Outlines (Oracle only)
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8. If you can find it, then you can change it!
This presentation is about how to find the SQL.
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9. DBMS_APPLICATION_INFO
Oracle implemented DBMS_APPLICATION_INFO module to solve this problem in Oracle Apps.
SET_MODULE
PeopleSoft only uses CLIENT_INFO
So you only know which OPRID is responsible for a statement
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10. In the following slides I am going to show a number of SQL statements.
Can you work out what produced them?
ALTER SESSION SET _AUDIENCE_PARTICIPATION_ENABLED=TRUE;
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11. Component Processor
SELECT EMPLID, PER_STATUS, TO_CHAR(BIRTHDATE,'YYYY-MM-DD'), BIRTHPLACE, BIRTHCOUNTRY,BIRTHSTATE, TO_CHAR(DT_OF_DEATH,'YYYY-MM-DD'), TO_CHAR(ORIG_HIRE_DT,'YYYY-MM-DD'), HIGHLY_COMP_EMPL_C, HIGHLY_COMP_EMPL_P
FROM PS_PERSON
WHERE EMPLID=:1
ORDER BY EMPLID
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12. Component Processor
This SQL is interpreted from contents of PeopleTools tables
You won’t find this SQL anywhere in code.
Generally all UPPER CASE
Dates converted to strings in the format YYYY-MM-DD
Date-times converted to strings in the format YYYY-MM-DD-HH24.MI.SS."000000"
One SQL loading one table per scroll
Predicated and sorted by the ‘key’ fields.
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13. Search Dialogue
SELECT DISTINCT EMPLID, EMPL_RCD, NAME, LAST_NAME_SRCH, SETID_DEPT, DEPTID, NAME_AC, PER_STATUS
FROM PS_PERS_SRCH_GBL
WHERE ROWSECCLASS=:1
AND UPPER(NAME) LIKE UPPER('Smith') || '%' ESCAPE '\'
ORDER BY NAME, EMPLID
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14. Component Processor Variations
Search Dialogue queries are
always DISTINCT
Often contain ROWSECCLASS
User search criteria as literals
UPPER() function when case insensitive
Wildcard added automatically when search string shorter than column
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15. Translate Values Hint added from PT8.43 SELECT /*+ FIRST_ROWS */
NAME_TYPE, ORDER_BY_SEQ, NAME_TYPE_DESCR
FROM PS_NAME_TYPE_TBL A
ORDER BY NAME_TYPE
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16. PeopleCode PeopleSoft’s proprietary 3GL
Tokenised in PeopleTools tables
Can also be executed by Application Engine
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17. SQLExec() Select A.BEN_STATUS from PS_ACTN_REASON_TBL A
where A.ACTION = :1
and A.ACTION_REASON = (Select min(AA.ACTION_REASON)
from PS_ACTN_REASON_TBL AA
where AA.ACTION = A.ACTION)
and A.EFFDT = (Select max(AAA.EFFDT)
from PS_ACTN_REASON_TBL AAA
where AAA.ACTION = A.ACTION
and AAA.ACTION_REASON = A.ACTION_REASON)
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18. SQLExec()
SQLExec("Select A.BEN_STATUS from PS_ACTN_REASON_TBL A where A.ACTION = :1 and
A.ACTION_REASON = (Select min(AA.ACTION_REASON) from PS_ACTN_REASON_TBL AA where AA.ACTION
= A.ACTION) and A.EFFDT = (Select max(AAA.EFFDT) from PS_ACTN_REASON_TBL AAA where
AAA.ACTION = A.ACTION and AAA.ACTION_REASON = A.ACTION_REASON)", &ACTION, &FETCH_STATUS);
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19. SQLExec() What you code is what you get Hand Coded Mixed Case
More complex
Joins several tables
Hand Coded
Multi character row source identifiers (table aliases)
Mostly using bind variables
literals possible if dynamically generate SQL
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20. ScrollSelect()
SELECT SETID, DEPTID, POSITION_POOL_ID, SETID_JOBCODE, JOBCODE, POSITION_NBR, EMPLID, EMPL_RCD, JOB_REQ_NBR, TRIGGER_RECORD, TIME_STAMP, TO_CHAR(TIME_STAMP,'YYYY-MM-DD-HH24.MI.SS."000000"'), PROCESSED
FROM PS_ENCUMB_TRIGGER
Where TRIGGER_RECORD = 'J'
and emplid = :1
and EMPL_RCD = :2
and PROCESSED = 'N'
ORDER BY SETID, DEPTID, POSITION_POOL_ID, SETID_JOBCODE, JOBCODE, POSITION_NBR, EMPLID, EMPL_RCD, JOB_REQ_NBR, TRIGGER_RECORD, TIME_STAMP
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21. ScrollSelect()
ScrollSelect(1, Record.ENCUMB_TRIGGER, Record.ENCUMB_TRIGGER,
"Where TRIGGER_RECORD = 'J' and emplid = :1 and EMPL_RCD = :2 and PROCESSED = 'N'",
&EMPLID, &EMPL_RCD);
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22. ScrollSelect() Upper Case Where clause Select clause As coded
All the columns/fields
From clause
Table name
Order by clause
Key fields
Where clause
As coded
Binds and/or literals
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23. Rowset Fill() function
SELECT FILL.PNLNAME, FILL.PNLFLDID, FILL.FIELDNUM, FILL.PNLFIELDNAME, FILL.FIELDTYPE, FILL.RECNAME, FILL.FIELDNAME, FILL.LBLTYPE, FILL.GOTOPORTALNAME, FILL.GOTONODENAME, FILL.GOTOMENUNAME, FILL.GOTOPNLGRPNAME, FILL.GOTOMKTNAME, FILL.GOTOPNLNAME, FILL.GOTOPNLACTION
FROM PS_CO_PNLFIELD_VW FILL
WHERE PNLNAME = :1
and FIELDTYPE = 16 and LBLTYPE = 7
AND RECNAME = :2 and FIELDNAME = :3
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24. Rowset Fill() function
&PnlField_Rs = CreateRowset(Record.CO_PNLFIELD_VW);
&PnlField_Rs.Flush();
&PnlField_Rs.Fill("WHERE PNLNAME = :1 and FIELDTYPE = 16 and LBLTYPE = 7 AND RECNAME = :2 and FIELDNAME = :3", %Page, &LinkRecName, &LinkFieldName);
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25. Rowset functions Replacing older scroll functions
[OT: Although I think they are less efficient at run time!]
Complexities hidden inside view
Upper Case select clause
Mixed case where clause
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26. A useful trick Joining tables in Scroll/Fill functions
&PnlField_Rs = CreateRowset(Record.X);
&PnlField_Rs.Fill(",PS_Y A WHERE FILL.MYCOL = A.MYCOL …",…);
And this is what you get
SELECT FILL.… FROM PS_X FILL ,PS_Y A WHERE FILL.MYCOL = A.MYCOL …
This can be more efficient than burying everything in a view
especially if a group function is involved.
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27. Searching PeopleCode Application Designer ‘Find In…’ Utility
Effective but slow
Save all PeopleCode to a text file
Search for ;
Save result
Search text file with word
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28. Query
SELECT A.EMPLID, A.ATTENDANCE, A.COURSE, B.DESCR, D.NAME, A.SESSION_NBR, TO_CHAR(A.STATUS_DT,'YYYY-MM-DD'),B.COURSE
FROM PS_TRAINING A, PS_COURSE_TBL B, PS_PERSONAL_DTA_VW D, PS_PERS_SRCH_QRY D1
WHERE D.EMPLID = D1.EMPLID
AND D1.ROWSECCLASS = 'HCDPALL'
AND ( A.COURSE = :1
AND A.ATTENDANCE IN ('S','W')
AND A.COURSE = B.COURSE
AND A.EMPLID = D.EMPLID )
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29. But Which query? SELECT a.oprid, a.qryname FROM psqryrecord a
, psqryrecord b
, psqryrecord d
WHERE a.oprid = b.oprid
AND a.qryname = b.qryname
AND a.oprid = d.oprid
AND a.qryname = d.qryname
AND a.corrname = 'A'
AND a.recname = 'TRAINING'
AND b.corrname = 'B'
AND b.recname = 'COURSE_TBL'
AND d.corrname = 'D'
AND d.recname = 'PERSONAL_DTA_VW';
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30. But Which query? One of these
OPRID QRYNAME
TRN002__SESSION_ROSTER
TRN003__COURSE_WAITING_LIST
CAUTION: Unrestricted use of query will bring a system to its knees!
Users often clone public queries to their own private queries, and make a few tweaks.
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31. Batch Programs You know from the session a batch program
which type of batch program
v$session.process
v$session.program
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32. Cobol Stored Statement
DELETE FROM PS_GP_PYE_STAT_WRK WHERE CAL_RUN_ID=: AND EMPLID BETWEEN :2 AND : ;
It is impossible to be certain by just looking at the SQL statement.
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33. Cobol Stored Statements Dynamic Statements
Delivered as Data Mover scripts
%PS_HOME%/src/cbl/base
Dynamic Statements
Strings built by Cobol programs during execution
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34. Stored Statement STORE GPPCANCL_D_WRKSTAT
DELETE FROM PS_GP_PYE_STAT_WRK
WHERE CAL_RUN_ID=:1
AND EMPLID BETWEEN :2 AND :3 ;
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35. Stored Statements Stored statements usually contain bind variables
Dynamic statements sometimes contain literal values
But not always!
Individually named in timings report
Can be difficult to distinguish
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36. PeopleTools Trace COBOL
Stored Statement
GETSTMT Stmt=FSPJCOMB_S_COMGRP, length=297 COM Stmt=SELECT A.PROCESS_GROUP …
Dynamic Statement
DYNAMIC Stmt=FSPJECHF_U_CFERROR COM Stmt=UPDATE PS_PSA_ACCTDSTGL SET …
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37. Identify Stored Statements
STORE GPPCANCL_D_WRKSTAT
DELETE /*GPPCANCL_D_WRKSTAT*/
FROM PS_GP_PYE_STAT_WRK
WHERE CAL_RUN_ID=:1
AND EMPLID BETWEEN :2 AND :3 ;
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38. Identify Stored Statements
Stored in PS_SQLSTMT_TBL
Can add comment with PL/SQL
Download code for book
Ch.11: stmtid.sql (Oracle Only)
If you customise stored statements then add the comment manually to the .dms script
Remember to compare DMS scripts at upgrade time
The PeopleSoft documentation won’t remind you!
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39. SQR What you code is what you get Search for the SQL in the SQR
And the included SQC files
Can also embed string variables in SQL
content of variable dynamically becomes a part of the SQL statement.
Source of hard parsing
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40. SQR ... FROM PS_GP_CAL_RUN_DTL A, PS_GP_CALENDAR B, PS_GP_CAL_PRD C
WHERE A.CAL_RUN_ID = $Cal_Run_ID
[$Where]
AND B.GP_PAYGROUP = A.GP_PAYGROUP
AND B.CAL_ID = A.CAL_ID
AND C.CAL_PRD_ID = B.CAL_PRD_ID
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41. SQR let $Where = '' if not isblank($Paygroup)
let $Where = ' AND GRP.GP_PAYGROUP = ''' || $Paygroup || ''''
let $Where_B = ' AND B.GP_PAYGROUP = ''' || $Paygroup || ''''
End-If
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42. Hints in SQR Begin-Select On-Error=SQL-Error /*+ALL_ROWS*/
m.model_statement
m.parmcount
m.statement_type
...
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43. Hints in SQR begin-SELECT DISTINCT on-Error=SQL-Error /*SYSRECORD-13*/
RECNAME &Record13_RecName
if (((#current-line + 1) = #sqr-max-lines) and $DetailErrFound = 'Y') or
($DetailErrFound = 'N')
move 'Y' to $DetailErrFound
do PrintSectionHeadings
end-if
let #rows = #rows +1
print &Record13_RecName (+1,#Start1)
FROM PSRECDEFN
, (SELECT /*+ALL_ROWS*/ 'x' FROM DUAL)
WHERE RECTYPE = 7 AND SQLTABLENAME <> ' '
ORDER BY RECNAME
end-SELECT
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44. Hints and Comments in SQR
SELECT DISTINCT /*SYSRECORD-13*/ RECNAME
FROM PSRECDEFN
, (SELECT /*+ALL_ROWS*/ 'x' FROM DUAL)
WHERE RECTYPE = 7
AND SQLTABLENAME <> ' '
ORDER BY RECNAME
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45. SQR Cursor Status Report
-s parameter causes SQR to print cursor status report
after execution
Static SQL only
Parsed before execution begins.
If there is a syntax error in static SQL then program will fail immediately
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46. SQR Cursor Status Report…
Cursor #34:
SQL = SELECT substr(C.PRCSNAME, 1, 5), C.PRCSNAME FROM PS_PRCSDEFN C
WHERE C.PRCSTYPE like 'SQR%'
Compiles = 2
Executes = 1
Rows = 11
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47. SQR Cursor Status Report
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48. Application Engine SELECT SERVERNAME FROM PSSERVERSTAT
WHERE SERVERNAME <> 'PSNT'
AND SERVERSTATUS = '3'
AND ( ROUND((( SYSDATE) - (LASTUPDDTTM)) * 1440, 0) < 10) /
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49. Application Engine %Select(PRCSPURGE_AET.SERVERNAME) SELECT SERVERNAME
FROM PSSERVERSTAT
WHERE SERVERNAME <> %Bind(PRCSPURGE_AET.SERVERNAMERUN)
AND SERVERSTATUS = '3'
AND ( %DateTimeDiff(LASTUPDDTTM, %CurrentDateTimeIn) < 10)
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50. Application Engine Mostly, what you code is what you get
&Bind() variables mostly replaced with literal values
Lots of hard parsing
ReuseStatement attribute on AE step
From PeopleTools 8.x, rewritten in C++, and so can execute PeopleCode.
Bind variables in PeopleCode remain bind variables in SQL.
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51. Optimisation Techniques
Indexes
Disabling without hints
From Clause Ordering
ORDERED hints
Leading Hint
Transitive Closure
Hugely effective on GP
PSFT develops on Microsoft SQL Server, Stress Tests on DB2 and releases to Oracle! - Perhaps that will change now!!
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52. Implementing Techniques
Component Processor
Views
Views of a single table are updatable
Scope of Hint
Function Based Indexes
For case insensitive search dialogues
SearchSave PeopleCode
Validate search criteria
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53. Implementing Techniques
Queries
Hints in Expressions
Move DISTINCT to Expression
Manually reorder FROM clause
SQL92 Outer Join
Outer-join query secure records
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54. Effective Date/Sequence Processing
Query gratuitously adds EFFDT/EFFSEQ processing.
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55. Effective Date/Sequence Processing
Irrespective of whether key fields of not!
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56. Effective Date/Sequence Processing
SELECT A.EMPLID, A.EMPL_RCD, A.NAME
FROM PS_EMPLOYEES A, PS_EMPLMT_SRCH_QRY A1
WHERE A.EMPLID = A1.EMPLID
AND A.EMPL_RCD = A1.EMPL_RCD
AND A1.ROWSECCLASS = 'HCDPALL'
AND ( A.EFFDT =
(SELECT MAX(A_ED.EFFDT) FROM PS_EMPLOYEES A_ED
WHERE A.EMPLID = A_ED.EMPLID
AND A.EMPL_RCD = A_ED.EMPL_RCD
AND A_ED.EFFDT <= SYSDATE)
AND A.EFFSEQ =
(SELECT MAX(A_ES.EFFSEQ) FROM PS_EMPLOYEES A_ES
WHERE A.EMPLID = A_ES.EMPLID
AND A.EMPL_RCD = A_ES.EMPL_RCD
AND A.EFFDT = A_ES.EFFDT) )
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57. Effective Date/Sequence Processing
You can (and should) delete it manually
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58. Questions? www.go-faster.co.uk PSFT Tech PUG 10.1.05
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59. SQL*Fingerprints David Kurtz www.go-faster.co.uk
Go-Faster Consultancy Ltd.
Go-Faster Consultancy Ltd.