Debugging Techniques
Walter F. Blood
Technical Director, FOCUS Division
June, 2008
FOCUS Debugging Techniques Agenda
When and Why? Debugging ItselfThe 5 Key Questions – General TechniquesReporting Issues - TABLEIntegrityCodePerformance
FOCUS Debugging TechniquesDebugging Itself
When will you need debugging?You don’t get the results you expectYour old report stops working in a new releaseYou get a FOCUS error message – FOCnnnYour report never comes back.Your systems person calls you to complain about your
activity.FOCUS abends or you get a -12 from the server.
FOCUS Debugging TechniquesDebugging Itself
What can you expect from debugging?To get the report working nowTo find a workaround for the problem if necessaryTo have the problem fixed by IBI if required
FOCUS Debugging TechniquesGeneral Techniques
The Five Key Questions1. Is the machine plugged in?
2. What is the first sign of trouble?
3. Can I make the problem occur with less code?
4. What is FOCUS actually doing?
5. What can FOCUS tell me?
FOCUS Debugging TechniquesGeneral Techniques
1. Is the machine plugged in?Check the obvious— Spelling and punctuation File existence FILEDEFs or ALLOCations Interface availability Security issues Sink Machine/FDS availability
TABLE FILE CARPRINT COUNTRY CAR MODEL ANDCOMPUTE SALES='$ ' | EDIT(SALES,'999$');END
TABLE FILE CARPRINT COUNTRY CAR MODEL ANDCOMPUTE SALES='$ ' | EDIT(SALES,'999$');END
TABLE FILE CARPRINT COUNTRY CAR MODEL ANDCOMPUTE SALES='$ ' | EDIT(SALES,'999$');END> ERROR AT OR NEAR LINE 3 IN PROCEDURE DBG1 FOCEXEC(FOC282) RESULT OF EXPRESSION IS NOT COMPATIBLE WITH THE FORMAT OF FIELD: SALES(FOC009) INCOMPLETE REQUEST STATEMENT BYPASSING TO END OF COMMAND>
TABLE FILE CARPRINT COUNTRY CAR MODEL ANDCOMPUTE SALES='$ ' | EDIT(SALES,'999$');END> ERROR AT OR NEAR LINE 3 IN PROCEDURE DBG1 FOCEXEC(FOC282) RESULT OF EXPRESSION IS NOT COMPATIBLE WITH THE FORMAT OF FIELD: SALES(FOC009) INCOMPLETE REQUEST STATEMENT BYPASSING TO END OF COMMAND>
FOCUS Debugging TechniquesGeneral Techniques
2. What is the first sign of trouble?FOCUS error message
Check description to determine nature of problem
FOCUS Debugging TechniquesGeneral Techniques
2. What is the first sign of trouble?FOCUS error message Multiple FOCUS error messages
SET ECHO ON;DEFINE FILE CARCONTINENT/A4=IF COUNTRY = FRANCE OR ENGLAND OR ITALY OR 'W GERMANY' THEN EUROPE ELSE ASIA;PROFIT/D12.2CML%=RETAIL_COST - DEALER_COST / DEALER_COST*100;ENDTABLE FILE CARSUM RETAIL_COST DEALER_COST PROFITBY CONTINENTBY COUNTRYON TABLE HOLD AS HOLDCAR FORMAT FOCUS INDEX COUNTRYEND-RUNTABLE FILE ABCHOLDPRINT SALES PROFIT BY CONTINENTEND
SET ECHO ON;DEFINE FILE CARCONTINENT/A4=IF COUNTRY = FRANCE OR ENGLAND OR ITALY OR 'W GERMANY' THEN EUROPE ELSE ASIA;PROFIT/D12.2CML%=RETAIL_COST - DEALER_COST / DEALER_COST*100;ENDTABLE FILE CARSUM RETAIL_COST DEALER_COST PROFITBY CONTINENTBY COUNTRYON TABLE HOLD AS HOLDCAR FORMAT FOCUS INDEX COUNTRYEND-RUNTABLE FILE ABCHOLDPRINT SALES PROFIT BY CONTINENTEND
FOCUS Debugging TechniquesGeneral Techniques
> (FOC209) THE DATA VALUE EXCEEDS ITS LENGTH SPECIFICATION: ECHO ON; ERROR AT OR NEAR LINE 3 IN PROCEDURE DBG2 FOCEXEC(FOC258) FIELDNAME OR COMPUTATIONAL ELEMENT NOT RECOGNIZED: FRANCE ERROR AT OR NEAR LINE 5 IN PROCEDURE DBG2 FOCEXEC(FOC253) INVALID FORMAT SPECIFICATION ON LEFT HAND SIDE: D12.2CML% ERROR AT OR NEAR LINE 8 IN PROCEDURE DBG2 FOCEXEC(FOC003) THE FIELDNAME IS NOT RECOGNIZED: PROFIT BYPASSING TO END OF COMMAND(FOC009) INCOMPLETE REQUEST STATEMENTERROR AT OR NEAR LINE 14 IN PROCEDURE DBG2 FOCEXEC(FOC205) THE DESCRIPTION CANNOT BE FOUND FOR FILE NAMED: ABCHOLD(FOC205) THE DESCRIPTION CANNOT BE FOUND FOR FILE NAMED: ABCHOLD BYPASSING TO END OF COMMAND
> (FOC209) THE DATA VALUE EXCEEDS ITS LENGTH SPECIFICATION: ECHO ON; ERROR AT OR NEAR LINE 3 IN PROCEDURE DBG2 FOCEXEC(FOC258) FIELDNAME OR COMPUTATIONAL ELEMENT NOT RECOGNIZED: FRANCE ERROR AT OR NEAR LINE 5 IN PROCEDURE DBG2 FOCEXEC(FOC253) INVALID FORMAT SPECIFICATION ON LEFT HAND SIDE: D12.2CML% ERROR AT OR NEAR LINE 8 IN PROCEDURE DBG2 FOCEXEC(FOC003) THE FIELDNAME IS NOT RECOGNIZED: PROFIT BYPASSING TO END OF COMMAND(FOC009) INCOMPLETE REQUEST STATEMENTERROR AT OR NEAR LINE 14 IN PROCEDURE DBG2 FOCEXEC(FOC205) THE DESCRIPTION CANNOT BE FOUND FOR FILE NAMED: ABCHOLD(FOC205) THE DESCRIPTION CANNOT BE FOUND FOR FILE NAMED: ABCHOLD BYPASSING TO END OF COMMAND
2. What is the first sign of trouble?FOCUS error message Multiple FOCUS error messages
FOCUS errors compoundSolve the earliest exposed problem first!
FOCUS Debugging TechniquesGeneral Techniques
2. What is the first sign of trouble?FOCUS error message Multiple FOCUS error messagesIncorrect or unexpected results
Work backwards from incorrect resultsLook for
Logic errorsIncorrect assumptionsFOCUS errors
FOCUS Debugging TechniquesGeneral Techniques
2. What is the first sign of trouble?FOCUS error message Multiple FOCUS error messagesIncorrect or unexpected results
PAGE 1
COUNTRY RETAIL_COST DEALER_COST PROFITMARGIN ------- ----------- ----------- ------------ ENGLAND 45,319 37,853 78 FRANCE 5,610 4,631 21 ITALY 51,065 41,235 88 JAPAN 6,478 5,512 35 W GERMANY 64,732 54,563 115
PAGE 1
COUNTRY RETAIL_COST DEALER_COST PROFITMARGIN ------- ----------- ----------- ------------ ENGLAND 45,319 37,853 78 FRANCE 5,610 4,631 21 ITALY 51,065 41,235 88 JAPAN 6,478 5,512 35 W GERMANY 64,732 54,563 115
DEFINE FILE CARPROFITMARGIN/D7=((RETAIL_COST - DEALER_COST)/DEALER_COST)*100;ENDTABLE FILE CARSUM RETAIL_COST DEALER_COST PROFITMARGINBY COUNTRYEND
DEFINE FILE CARPROFITMARGIN/D7=((RETAIL_COST - DEALER_COST)/DEALER_COST)*100;ENDTABLE FILE CARSUM RETAIL_COST DEALER_COST PROFITMARGINBY COUNTRYEND
FOCUS Debugging TechniquesGeneral Techniques
2. What is the first sign of trouble?FOCUS error message Multiple FOCUS error messagesIncorrect or unexpected results
TABLE FILE CARSUM RETAIL_COST DEALER_COST PROFITMARGINCOMPUTE PM/D7=((RETAIL_COST - DEALER_COST)/DEALER_COST)*100;BY COUNTRYEND
TABLE FILE CARSUM RETAIL_COST DEALER_COST PROFITMARGINCOMPUTE PM/D7=((RETAIL_COST - DEALER_COST)/DEALER_COST)*100;BY COUNTRYEND
PAGE 1
COUNTRY RETAIL_COST DEALER_COST PM------- ----------- ----------- --ENGLAND 45,319 37,853 20FRANCE 5,610 4,631 21ITALY 51,065 41,235 24JAPAN 6,478 5,512 18W GERMANY 64,732 54,563 19
PAGE 1
COUNTRY RETAIL_COST DEALER_COST PM------- ----------- ----------- --ENGLAND 45,319 37,853 20FRANCE 5,610 4,631 21ITALY 51,065 41,235 24JAPAN 6,478 5,512 18W GERMANY 64,732 54,563 19
FOCUS Debugging TechniquesGeneral Techniques
2. What is the first sign of trouble?FOCUS error message Multiple FOCUS error messagesIncorrect resultsAbend
Traces help identify FOCUS errorsDumps may be required
FOCUS Debugging TechniquesGeneral Techniques
2. What is the first sign of trouble?FOCUS error message
Check description to determine nature of problemMultiple FOCUS error messages
FOCUS errors compoundSolve the earliest exposed problem first!
Incorrect resultsWork backwards from incorrect resultsLook for FOCUS errors
Abend Traces help identify FOCUS errorsDumps may be required
FOCUS Debugging TechniquesGeneral Techniques
3. Will the problem occur with less code? Simplify the problem.
Remove code not related to the problemSegment code to facilitate testing
Problem:
User had a problem with a 7000+ line FOCEXEC.
Solution:
Use -GOTO in Dialogue Manager, and GOTO in MODIFY, to skip blocks of code.
Checkpoint and rerun from last successful step.
Problem:
User had a problem with a 7000+ line FOCEXEC.
Solution:
Use -GOTO in Dialogue Manager, and GOTO in MODIFY, to skip blocks of code.
Checkpoint and rerun from last successful step.
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 SUBTOTAL PLUS-OTHERSWHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1);ON S1 SUBHEAD“ “TOTALS FOR <S1 “ “ON TABLE HOLD AS ABCOUT FORMAT PDFON TABLE SET STYLE *TYPE = REPORT, …ENDSTYLEEND
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 SUBTOTAL PLUS-OTHERSWHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1);ON S1 SUBHEAD“ “TOTALS FOR <S1 “ “ON TABLE HOLD AS ABCOUT FORMAT PDFON TABLE SET STYLE *TYPE = REPORT, …ENDSTYLEEND
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 SUBTOTAL PLUS-OTHERSWHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1);ON S1 SUBHEAD“ “TOTALS FOR <S1 “ “ON TABLE HOLD AS ABCOUT FORMAT PDF END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 SUBTOTAL PLUS-OTHERSWHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1);ON S1 SUBHEAD“ “TOTALS FOR <S1 “ “ON TABLE HOLD AS ABCOUT FORMAT PDF END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 SUBTOTAL PLUS-OTHERSWHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1); ON TABLE HOLD AS ABCOUT FORMAT PDF END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 SUBTOTAL PLUS-OTHERSWHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1); ON TABLE HOLD AS ABCOUT FORMAT PDF END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 WHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1); ON TABLE HOLD AS ABCOUT FORMAT PDF END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 WHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1); ON TABLE HOLD AS ABCOUT FORMAT PDF END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 ON TABLE HOLD AS ABCOUT FORMAT PDF END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 ON TABLE HOLD AS ABCOUT FORMAT PDF END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3
END
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3
END
FOCUS Debugging TechniquesGeneral Techniques
Remove code until problem disappears
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 SUBTOTAL PLUS-OTHERSWHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1);ON S1 SUBHEAD“ “TOTALS FOR <S1 “ “ON TABLE HOLD AS ABCOUT FORMAT PDFON TABLE SET STYLE *TYPE = REPORT, …ENDSTYLEEND
TABLE FILE ABCSUM F1 F2 F3/A4 FST.F4BY S1 NOPRINTBY S2 BY HIGHEST 3 S3 SUBTOTAL PLUS-OTHERSWHERE ((W1 GE W2 AND W1 LE W3) AND (W4 LT W5 OR W6 LT W7)) OR (W5*24 GE W9 +W1);ON S1 SUBHEAD“ “TOTALS FOR <S1 “ “ON TABLE HOLD AS ABCOUT FORMAT PDFON TABLE SET STYLE *TYPE = REPORT, …ENDSTYLEEND
FOCUS Debugging TechniquesGeneral Techniques
Segment TABLE request to isolate the problem
-DEFAULTS START=STEP1, STOP=STEP99,ECHO=OFF-SET ECHO=&ECHO;-GOTO &START-STEP1TABLE FILE … lots of code-GOTO NOSTYON TABLE SET STYLE *TYPE = REPORT, …ENDSTYLE-NOSTYEND
-DEFAULTS START=STEP1, STOP=STEP99,ECHO=OFF-SET ECHO=&ECHO;-GOTO &START-STEP1TABLE FILE … lots of code-GOTO NOSTYON TABLE SET STYLE *TYPE = REPORT, …ENDSTYLE-NOSTYEND
FOCUS Debugging TechniquesGeneral Techniques
MODIFY FILE …GOTO TWOCASE ONE…ENDCASECASE TWO…ON MATCH/NOMATCH GOTO ENDENDCASECASE THREE…ENDCASEDATA END
MODIFY FILE …GOTO TWOCASE ONE…ENDCASECASE TWO…ON MATCH/NOMATCH GOTO ENDENDCASECASE THREE…ENDCASEDATA END
Use GOTO to exclude MODIFY cases
FOCUS Debugging TechniquesGeneral Techniques
4. What is FOCUS/WebFOCUS actually doing? Expose what is happening. In TABLE:
Use LET NOPRINT = ; to show complete requestUse SET DEFECHO to show variable substitutionUse –TYPE to expose system variable values
LET NOPRINT = ;TABLE FILE CARSUM RETAIL_COSTBY COUNTRY NOPRINT…
LET NOPRINT = ;TABLE FILE CARSUM RETAIL_COSTBY COUNTRY NOPRINT…
SET DEFECHO=ALLTABLE FILE CARSUM …WHERE COUNTRY EQ &VAR1…
SET DEFECHO=ALLTABLE FILE CARSUM …WHERE COUNTRY EQ &VAR1…
TABLE FILE CAR…END-RUN-TYPE RECORDS &RECORDS
TABLE FILE CAR…END-RUN-TYPE RECORDS &RECORDS
FOCUS Debugging TechniquesGeneral Techniques
4. What is FOCUS/WebFOCUS actually doing? Expose what is happening. In MODIFY:
Use MODIFY FILE xxx TRACE to locate CASE Use TYPE IN CASE xxx to indicate position inside case
**** START OF TRACE ****TRACE ===> AT CASE TOPDATA FOR TRANSACTION 1EMP_ID => 112847612CURR_SAL => 67000TRACE ===> AT CASE HIGHSALYOU ENTERED A SALARY ABOVE $50000…
**** START OF TRACE ****TRACE ===> AT CASE TOPDATA FOR TRANSACTION 1EMP_ID => 112847612CURR_SAL => 67000TRACE ===> AT CASE HIGHSALYOU ENTERED A SALARY ABOVE $50000…
MODIFY FILE EMPLOYEE…CASE ONETYPE IN CASE ONE MATCH EMP_ID TYPE AFTER MATCHON MATCH UPDATE CURR_SAL
MODIFY FILE EMPLOYEE…CASE ONETYPE IN CASE ONE MATCH EMP_ID TYPE AFTER MATCHON MATCH UPDATE CURR_SAL
FOCUS Debugging TechniquesGeneral Techniques
4. What is FOCUS/WebFOCUS actually doing? Expose what is happening. In Dialogue Manager:
Use SET &ECHO and SET DEFECHO to expose the actual flow of commands
Use –TYPE to expose local and global variables
-DEFAULT &TEST = OFF
SET PRINTPLUS = ON
-RUN
-? SET PRINTPLUS &PRINTPLUS
-SET &EVT = IF TEST EQ ‘OFF’ THEN ‘*’ ELSE ‘TYPE’;
-&EVT.EVAL VALUE OF PRINTPLUS IS &PRINTPLUS
-DEFAULT &TEST = OFF
SET PRINTPLUS = ON
-RUN
-? SET PRINTPLUS &PRINTPLUS
-SET &EVT = IF TEST EQ ‘OFF’ THEN ‘*’ ELSE ‘TYPE’;
-&EVT.EVAL VALUE OF PRINTPLUS IS &PRINTPLUS
SET DEFECHO=ALL-SET &ECHO=ON…EX pgm2 ECHO=&ECHO
SET DEFECHO=ALL-SET &ECHO=ON…EX pgm2 ECHO=&ECHO
FOCUS Debugging TechniquesGeneral Techniques
4. What is FOCUS/WebFOCUS actually doing? Expose what is happening. In SQL Translator:
Use ECHO to show the generate FOCUS code Use FILE nnn to create focexec with FOCUS code
SQLSELECT BODYTYPE, AVG(MPG), SUM(SALES)FROM CARWHERE RETAIL_COST > 5000GROUP BY BODYTYPE;ECHOTABLEEND
SQLSELECT BODYTYPE, AVG(MPG), SUM(SALES)FROM CARWHERE RETAIL_COST > 5000GROUP BY BODYTYPE;ECHOTABLEEND
> SET COUNTWIDTH=ON-SET SQLERRNUM = 0;TABLE FILE CARWRITE MIN.BODYTYPE AS 'BODYTYPE' AVE.MPG SUM.SALES BY BODYTYPE NOPRINT WHERE ( RETAIL_COST GT 5000 ) ;ON TABLE SET CARTESIAN ONON TABLE SET ASNAMES ONON TABLE SET HOLDLIST PRINTONLYEND-RUN
> SET COUNTWIDTH=ON-SET SQLERRNUM = 0;TABLE FILE CARWRITE MIN.BODYTYPE AS 'BODYTYPE' AVE.MPG SUM.SALES BY BODYTYPE NOPRINT WHERE ( RETAIL_COST GT 5000 ) ;ON TABLE SET CARTESIAN ONON TABLE SET ASNAMES ONON TABLE SET HOLDLIST PRINTONLYEND-RUN
FOCUS Debugging TechniquesGeneral Techniques
4. What is FOCUS/WebFOCUS actually doing? Expose what is happening. With Interfaces:
Use SET XRETRIEVAL=OFF to suppress data access
SET XRETRIEVAL=OFFTABLE FILE DB2FILESUM RETAIL_COST DEALER COSTBY COUNTRY WHERE SALES GT 5000END
SET XRETRIEVAL=OFFTABLE FILE DB2FILESUM RETAIL_COST DEALER COSTBY COUNTRY WHERE SALES GT 5000END
...RETRIEVAL KILLED NUMBER OF RECORDS IN TABLE= 0 LINES= 0
...RETRIEVAL KILLED NUMBER OF RECORDS IN TABLE= 0 LINES= 0
FOCUS Debugging TechniquesGeneral Techniques
4. What is FOCUS/WebFOCUS actually doing? Expose what is happening. With Interfaces:
Use SET XRETRIEVAL=OFF to suppress data accessUse Traces to expose interface activity
SET TRACEUSER=ONSET TRACEOFF=ALLSET TRACEON=STMTRACE/CLIENT SET TRACEON=STMTRACE/FSTRACE
SET TRACEUSER=ONSET TRACEOFF=ALLSET TRACEON=STMTRACE/CLIENT SET TRACEON=STMTRACE/FSTRACE
SQLDI - Records SQL, RDBMS return codes, cursor operations SQLAGGR - Displays data adapter-to-RDBMS aggregation & join analysis STMTRACE - SQL generated by the data adapter, Direct SQL Passthru
SQLDI - Records SQL, RDBMS return codes, cursor operations SQLAGGR - Displays data adapter-to-RDBMS aggregation & join analysis STMTRACE - SQL generated by the data adapter, Direct SQL Passthru
01 S1***************EMP_ID ***LAST_NAME ***FIRST_NAME ***HIRE_DATE *** ******************************* I +-----------------+-----------------+-----------------+-----------------+ I I I I I I FUNDTRAN I PAYINFO I ADDRESS I SALINFO I ATTNDSEG02 I U 03 I SH1 07 I S1 08 I SH1 10 I KM************** ************** ************** ************** ..............*BANK_NAME * *DAT_INC ** *TYPE ** *PAY_DATE ** :DATE_ATTEND ::*BANK_CODE * *PCT_INC ** *ADDRESS_LN1 ** *GROSS ** :EMP_ID ::K*BANK_ACCT * *SALARY ** *ADDRESS_LN2 ** * ** : ::*EFFECT_DATE * *JOBCODE ** *ADDRESS_LN3 ** * ** : ::* * * ** * ** * ** : ::************** *************** *************** *************** :............:: ************** ************** ************** .............:
01 S1***************EMP_ID ***LAST_NAME ***FIRST_NAME ***HIRE_DATE *** ******************************* I +-----------------+-----------------+-----------------+-----------------+ I I I I I I FUNDTRAN I PAYINFO I ADDRESS I SALINFO I ATTNDSEG02 I U 03 I SH1 07 I S1 08 I SH1 10 I KM************** ************** ************** ************** ..............*BANK_NAME * *DAT_INC ** *TYPE ** *PAY_DATE ** :DATE_ATTEND ::*BANK_CODE * *PCT_INC ** *ADDRESS_LN1 ** *GROSS ** :EMP_ID ::K*BANK_ACCT * *SALARY ** *ADDRESS_LN2 ** * ** : ::*EFFECT_DATE * *JOBCODE ** *ADDRESS_LN3 ** * ** : ::* * * ** * ** * ** : ::************** *************** *************** *************** :............:: ************** ************** ************** .............:
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me?Use CHECK FILE to determine PATHs if you get --
FOC144 – Testing on independent paths of dataFOC030 -- All verb objects must be in the
same path as their sort fields
CHECK FILE EMPLOYEE PICTURECHECK FILE EMPLOYEE PICTURE
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me?Use CHECK FILE HOLD to determine PATHs if you get --
CHECK FILE EMPLOYEE HOLDCHECK FILE EMPLOYEE HOLD
FILE=FOCMAST,SUFFIX=FIX,$ SEGMENT=FILEATTR,$ FIELD=RECTYPE,FLE,A4,A4,$ FIELD=FILENAME,FILN64,A64,A64,$ FIELD=SUFFIX,FILN34,A8,A8,$ ….SEGMENT=SEGATTR,PARENT=FILEATTR,$ FIELD=RECTYPE,SEG,A4,A4,$ FIELD=SEGNO,SEGNUM,I2S,I4,$ FIELD=LEVEL,LLEVEL1,I2S,I2,$ ….SEGMENT=FLDATTR,PARENT=SEGATTR,$ FIELD=RECTYPE,FLD,A4,A4,$ FIELD=FLDNO,FLDNUM,I4S,I4,$ FIELD=FIELDNAME,FIELD,A66 ,A66 ,$
FILE=FOCMAST,SUFFIX=FIX,$ SEGMENT=FILEATTR,$ FIELD=RECTYPE,FLE,A4,A4,$ FIELD=FILENAME,FILN64,A64,A64,$ FIELD=SUFFIX,FILN34,A8,A8,$ ….SEGMENT=SEGATTR,PARENT=FILEATTR,$ FIELD=RECTYPE,SEG,A4,A4,$ FIELD=SEGNO,SEGNUM,I2S,I4,$ FIELD=LEVEL,LLEVEL1,I2S,I2,$ ….SEGMENT=FLDATTR,PARENT=SEGATTR,$ FIELD=RECTYPE,FLD,A4,A4,$ FIELD=FLDNO,FLDNUM,I4S,I4,$ FIELD=FIELDNAME,FIELD,A66 ,A66 ,$
TABLE FILE HOLDPRINT SEGNAME SEGNO FIELDNAME/A30PATHWHERE FIELDNAME EQ …..END
TABLE FILE HOLDPRINT SEGNAME SEGNO FIELDNAME/A30PATHWHERE FIELDNAME EQ …..END
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? FILEDEF - Check for expected file allocations
? TSO DDNAME – Check the
file characteristics? TSO DDNAME MULTVOLDDNAME = MULTVOLDSNAME = USER1.FOCTST.MULTVOLDISP = NEWDEVICE = DISKVOLSER = MFOC02,MFOC01DSORG = PSRECFM = FSECONDARY = 4ALLOCATION = TRACKSBLKSIZE = 4096LRECL = 4096TRKTOT = 92EXTENTSUSED = 23BLKSPERTRK = 12TRKSPERCYL = 15CYLSPERDISK = 2227BLKSWRITTEN = 1104FOCUSPAGES = 1059
? TSO DDNAME MULTVOLDDNAME = MULTVOLDSNAME = USER1.FOCTST.MULTVOLDISP = NEWDEVICE = DISKVOLSER = MFOC02,MFOC01DSORG = PSRECFM = FSECONDARY = 4ALLOCATION = TRACKSBLKSIZE = 4096LRECL = 4096TRKTOT = 92EXTENTSUSED = 23BLKSPERTRK = 12TRKSPERCYL = 15CYLSPERDISK = 2227BLKSWRITTEN = 1104FOCUSPAGES = 1059
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? LET – Find active alternative command meanings
Identify deactivated commands
Identify abbreviated commands
Validate your commands
? LET
OTH ON TABLE HOLD AS PR PRINT S SUM TF TABLE FILESCAN END>
? LET
OTH ON TABLE HOLD AS PR PRINT S SUM TF TABLE FILESCAN END>
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? DEFINE [filename]
Show virtual fields available – focexec/master
Identify unexpected duplicates
Validate type, length and source
? DEFINEFILE FIELD NAME FORMAT SEGMENT VIEW TYPEEMPLOYEE FCONCAT A26 1 MASTEREMPLOYEE FARITH I9S 2 MASTEREMPLOYEE FIFTHEN I1 1 MASTERCAR PROFIT D12.2 4CAR MARGIN D5.2 4CAR CONTINENT A10 1EMPLOYEE WKSAL D12.2 1
? DEFINEFILE FIELD NAME FORMAT SEGMENT VIEW TYPEEMPLOYEE FCONCAT A26 1 MASTEREMPLOYEE FARITH I9S 2 MASTEREMPLOYEE FIFTHEN I1 1 MASTERCAR PROFIT D12.2 4CAR MARGIN D5.2 4CAR CONTINENT A10 1EMPLOYEE WKSAL D12.2 1
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? USE – Display file usage including SU/FDS usage
Check file concatenation
Verify read/write status
? USE DIRECTORIES IN USE ARE: CAR FOCUS A CAR1 FOCUS A AS CAR CAR2 FOCUS A AS CAR EMPLOYEE FOCUS A ON SINK1 JOBFILE FOCUS A READ>
? USE DIRECTORIES IN USE ARE: CAR FOCUS A CAR1 FOCUS A AS CAR CAR2 FOCUS A AS CAR EMPLOYEE FOCUS A ON SINK1 JOBFILE FOCUS A READ>
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? SET - Display most common parameters and values
? SET ALL - Display all parameters and values
? SET <parameter> - Display single parameter and value
? SET FOR <parameter> – Display allowed set contexts
Display FOCUS settings in effectCheck for expected settings at time of errorCheck when using ON TABLE SETPROFILEs change them, cumulative effect
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? ? SET PARAMETER SETTINGS
ALL. OFF FOCALLOC OFF PRINTPLUS OFF ASNAMES FOCUS FOCCREATELOC OFF QUALCHAR . AUTOINDEX ON FOCSTACK SIZE 8 QUALTITLES OFF AUTOPATH ON FOCTRANSFORM OFF REBUILDMSG 1000 BINS 64 FOC2GIGDB OFF RECAP-COUNT OFF BLKCALC NEW HDAY SAVEMATRIX OFF BUSDAYS _MTWTF_ HIPERFOCUS OFF SCREEN ON BYPANELING OFF HOLDATTRS FOCUS SHADOW PAGE OFF CACHE 0 HOLDLIST ALL SMARTMODE OFF CARTESIAN OFF HOLDSTAT OFF SPACES AUTO
CDN OFF HOTMENU OFF SQLENGINE COLUMNSCROLL OFF IBMLE ON SUMPREFIX LST DATEDISPLAY OFF INDEX TYPE NEW TCPIPINT OFF DATEFNS ON LANGUAGE AMENGLISH TEMP DISK Z DATETIME STARTUP/RESET LINES/PAGE 66 TERMINAL IBM3270 DEFCENT 19 LINES/PRINT 57 TESTDATE TODAY DEFECHO OFF MESSAGE ON TITLES ON EMPTYREPORT OFF MODE CMS VIEWNAMESIZE 18 EXCELRELEASE 2000 MULTIPATH SIMPLE WIDTH 130 EXL2KLANG 1 NODATA . WINPFKEY OLD
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PARAMETER SETTINGS
ALL. OFF FOCALLOC OFF PRINTPLUS OFF ASNAMES FOCUS FOCCREATELOC OFF QUALCHAR . AUTOINDEX ON FOCSTACK SIZE 8 QUALTITLES OFF AUTOPATH ON FOCTRANSFORM OFF REBUILDMSG 1000 BINS 64 FOC2GIGDB OFF RECAP-COUNT OFF BLKCALC NEW HDAY SAVEMATRIX OFF BUSDAYS _MTWTF_ HIPERFOCUS OFF SCREEN ON BYPANELING OFF HOLDATTRS FOCUS SHADOW PAGE OFF CACHE 0 HOLDLIST ALL SMARTMODE OFF CARTESIAN OFF HOLDSTAT OFF SPACES AUTO
CDN OFF HOTMENU OFF SQLENGINE COLUMNSCROLL OFF IBMLE ON SUMPREFIX LST DATEDISPLAY OFF INDEX TYPE NEW TCPIPINT OFF DATEFNS ON LANGUAGE AMENGLISH TEMP DISK Z DATETIME STARTUP/RESET LINES/PAGE 66 TERMINAL IBM3270 DEFCENT 19 LINES/PRINT 57 TESTDATE TODAY DEFECHO OFF MESSAGE ON TITLES ON EMPTYREPORT OFF MODE CMS VIEWNAMESIZE 18 EXCELRELEASE 2000 MULTIPATH SIMPLE WIDTH 130 EXL2KLANG 1 NODATA . WINPFKEY OLD
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? SET <parameter? SET HOLDLIST HOLDLIST ALL
>
? SET HOLDLIST HOLDLIST ALL
>
? SET FOR <parameter
? SET FOR PRINTPLUS PRINTPLUS OFF
------------------------------------------------- SETTABLE FROM COMMAND LINE : YES SETTABLE ON TABLE : NO SETTABLE FROM SYSTEM-WIDE PROFILE : YES SETTABLE FROM HLI PROFILE : YES POOL TABLE BOUNDARY : NO
? SET FOR PRINTPLUS PRINTPLUS OFF
------------------------------------------------- SETTABLE FROM COMMAND LINE : YES SETTABLE ON TABLE : NO SETTABLE FROM SYSTEM-WIDE PROFILE : YES SETTABLE FROM HLI PROFILE : YES POOL TABLE BOUNDARY : NO
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? && - Global variables in effect and their values
Check that the values are expected
Unexpected values can point to other focexecs
&Vars can be seen with -? &var
Insert into focexec followed by -RUN
? && &&ECHO OFF &&MAXIMUM 123456789 &&MINIMUN 100000000 &&ONE FIRST>
? && &&ECHO OFF &&MAXIMUM 123456789 &&MINIMUN 100000000 &&ONE FIRST>
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? JOIN - List JOINs in effect
Verify the path generated by multiple JOINs
Check JOIN details
? JOIN JOINS CURRENTLY ACTIVE
HOST CROSSREFERENCEFIELD FILE TAG FIELD FILE TAG AS ALL WH----- ---- --- ----- ---- --- -- --- --COUNTRY CAR COUNTRY CONTNENT J1 N NJOBCODE EMPLOYEE JOBCODE JOBFILE J2 N NID_NUM SALES EMP_ID EDUCFILE J3 Y NBODYTYPE CAR EMP_ID EMPLOYEE J4 Y Y>
? JOIN JOINS CURRENTLY ACTIVE
HOST CROSSREFERENCEFIELD FILE TAG FIELD FILE TAG AS ALL WH----- ---- --- ----- ---- --- -- --- --COUNTRY CAR COUNTRY CONTNENT J1 N NJOBCODE EMPLOYEE JOBCODE JOBFILE J2 N NID_NUM SALES EMP_ID EDUCFILE J3 Y NBODYTYPE CAR EMP_ID EMPLOYEE J4 Y Y>
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? FILTER – Show filters in effect
Display active hidden screening conditions
Validate total screening being done
If filtering used as DBA, check user access
? FILTERSET FILE FILTER NAME DESCRIPTION--- -------- ----------- --------------------------------- CAR HIMARGIN CAR MDMARGIN* CAR LOMARGIN
? FILTERSET FILE FILTER NAME DESCRIPTION--- -------- ----------- --------------------------------- CAR HIMARGIN CAR MDMARGIN* CAR LOMARGIN
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? COMBINE – Display files grouped together for MODIFY
? LOAD – Display focexecs compiled and loaded into memory
Validate that compiled environment is the same as the run environment
Check JOINs, ALLOCs and FILEDEFs
? COMBINE FILE=ALLONE TAG PREFIX
CAR EMPLOYEE JOBFILE EDUCFILE
? COMBINE FILE=ALLONE TAG PREFIX
CAR EMPLOYEE JOBFILE EDUCFILE
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? STYLE – Style settings currently in effect? STYLE ONLINE-FMT OFFLINE-FMT STANDARD
STYLESHEET ON SQUEEZE OFF PAGESIZE Letter ORIENTATION PORTRAIT UNITS INCHES LABELPROMPT OFF LEFTMARGIN .250 RIGHTMARGIN .250 TOPMARGIN .250 BOTTOMMARGIN .250 STYLEMODE FULL TARGETFRAME FOCEXURL BASEURL
? STYLE ONLINE-FMT OFFLINE-FMT STANDARD
STYLESHEET ON SQUEEZE OFF PAGESIZE Letter ORIENTATION PORTRAIT UNITS INCHES LABELPROMPT OFF LEFTMARGIN .250 RIGHTMARGIN .250 TOPMARGIN .250 BOTTOMMARGIN .250 STYLEMODE FULL TARGETFRAME FOCEXURL BASEURL
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? FILE <focusfile> - Current state of the FOCUS file
STATUS OF FOCUS FILE: CAR FOCUS A ON 04/24/2008 AT 13.04.48 ACTIVE DELETED DATE OF TIME OF LAST TRANSSEGNAME COUNT COUNT LAST CHG LAST CHG NUMBER
ORIGIN 5 04/10/2008 12.02.45 99COMP 10 04/10/2008 12.02.45 99CARREC 18 04/10/2008 12.02.45 99BODY 18 04/10/2008 12.02.45 99SPECS 18 04/10/2008 12.02.45 99WARANT 8 04/10/2008 12.02.45 99EQUIP 25 04/10/2008 12.02.45 99*INDEXES*COUNTRY 04/10/2008 12.02.45 99TOTAL SEGS 102TOTAL CHAR 3988TOTAL PAGES 8LAST CHANGE 04/10/2008 12.02.45 99
STATUS OF FOCUS FILE: CAR FOCUS A ON 04/24/2008 AT 13.04.48 ACTIVE DELETED DATE OF TIME OF LAST TRANSSEGNAME COUNT COUNT LAST CHG LAST CHG NUMBER
ORIGIN 5 04/10/2008 12.02.45 99COMP 10 04/10/2008 12.02.45 99CARREC 18 04/10/2008 12.02.45 99BODY 18 04/10/2008 12.02.45 99SPECS 18 04/10/2008 12.02.45 99WARANT 8 04/10/2008 12.02.45 99EQUIP 25 04/10/2008 12.02.45 99*INDEXES*COUNTRY 04/10/2008 12.02.45 99TOTAL SEGS 102TOTAL CHAR 3988TOTAL PAGES 8LAST CHANGE 04/10/2008 12.02.45 99
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? FDT <focusfile> - Displays file directory table of FOCUS file
Check segment details
DIRECTORY:CAR FOCUS A ON 04/24/2008 AT 13.04.48 DATE/TIME OF LAST CHANGE: 04/10/2008 12.02.45
SEGNAME LENGTH PARENT START END PAGES LINKS TYPE
1 ORIGIN 5 1 1 1 22 COMP 9 1 2 2 1 53 CARREC 9 2 3 3 1 34 BODY 12 3 4 4 1 35 SPECS 21 4 5 5 1 26 WARANT 12 2 6 6 1 27 EQUIP 12 2 7 7 1 2 COUNTRY 8 8 1 NEW
DIRECTORY:CAR FOCUS A ON 04/24/2008 AT 13.04.48 DATE/TIME OF LAST CHANGE: 04/10/2008 12.02.45
SEGNAME LENGTH PARENT START END PAGES LINKS TYPE
1 ORIGIN 5 1 1 1 22 COMP 9 1 2 2 1 53 CARREC 9 2 3 3 1 34 BODY 12 3 4 4 1 35 SPECS 21 4 5 5 1 26 WARANT 12 2 6 6 1 27 EQUIP 12 2 7 7 1 2 COUNTRY 8 8 1 NEW
FOCUS Debugging TechniquesGeneral Techniques
5. What can FOCUS tell me? Use FOCUS Query Facilities to find hidden conditions
? STAT – Statistics for previous request/transaction
STATISTICS OF LAST COMMAND
RECORDS = 18 SEGS DELTD = 0LINES = 17 NOMATCH = 0BASEIO = 3 DUPLICATES = 0SORTIO = 0 FORMAT ERRORS = 0SORT PAGES = 0 INVALID CONDTS = 0READS = 0 OTHER REJECTS = 0TRANSACTIONS = 0 CACHE READS = 0ACCEPTED = 0 MERGES = 0SEGS INPUT = 0 SORT STRINGS = 0SEGS CHNGD = 0 INDEXIO = 0
INTERNAL MATRIX CREATED: YES AUTOINDEX USED: NOSORT USED: FOCUS AUTOPATH USED: YESAGGREGATION BY EXT.SORT: NO HOLD FROM EXTERNAL SORT: NO
STATISTICS OF LAST COMMAND
RECORDS = 18 SEGS DELTD = 0LINES = 17 NOMATCH = 0BASEIO = 3 DUPLICATES = 0SORTIO = 0 FORMAT ERRORS = 0SORT PAGES = 0 INVALID CONDTS = 0READS = 0 OTHER REJECTS = 0TRANSACTIONS = 0 CACHE READS = 0ACCEPTED = 0 MERGES = 0SEGS INPUT = 0 SORT STRINGS = 0SEGS CHNGD = 0 INDEXIO = 0
INTERNAL MATRIX CREATED: YES AUTOINDEX USED: NOSORT USED: FOCUS AUTOPATH USED: YESAGGREGATION BY EXT.SORT: NO HOLD FROM EXTERNAL SORT: NO
FOCUS Debugging TechniquesGeneral Techniques
KNOW the product! Refer to the doc when in doubtSearch techsupport.informationbuilders.comAsk questions on Focalpoint
Problem: User was getting strange results from a User Written Subroutine.
Solution: Check the documentation. User had incorrect arguments.
Problem: User was getting strange results from a User Written Subroutine.
Solution: Check the documentation. User had incorrect arguments.
FOCUS Debugging TechniquesGeneral Techniques
Assume nothing! CHECK EVERYTHING!
Problem: User was trying to do a segment redefinition, using POSITION.
Solution: Fields Were Incorrectly Added
Problem: User was trying to do a segment redefinition, using POSITION.
Solution: Fields Were Incorrectly Added
OCCURS = 5, LENGTH of the segment was 1000
FIELD=POSN1,E15,A50,A50,$SEGNAME=SEG1,POSITION=POSN1,OCCURS=5 FIELD=FLD1, , A200, A200,$
FIELD=POSN1,E15,A50,A50,$SEGNAME=SEG1,POSITION=POSN1,OCCURS=5 FIELD=FLD1, , A200, A200,$
FOCUS Debugging TechniquesGeneral Techniques
Do NOT use defaults! Code what you want to happen.
TABLEPut fields referenced in COMPUTEs as verb objects (NOPRINTed).
MODIFYCode “ON NOMATCH” condition before “ON MATCH” after EVERY MATCH.
TABLEPut fields referenced in COMPUTEs as verb objects (NOPRINTed).
MODIFYCode “ON NOMATCH” condition before “ON MATCH” after EVERY MATCH.
EFAULT
ISASTERboth begin with “D”.D
FOCUS Debugging TechniquesGeneral Techniques
If all else fails, GUESS at the solution, and TEST to verify
Problem:
Columns in EMR were incorrect or missing.
Solution:
Eliminated column specifications.
Found that FOCUS was adding verb objects for fields referenced in COMPUTEs.
Problem:
Columns in EMR were incorrect or missing.
Solution:
Eliminated column specifications.
Found that FOCUS was adding verb objects for fields referenced in COMPUTEs.
FOCUS Debugging TechniquesGeneral Techniques
When problems occur (and they will), eliminate, simplify, and reproduce on standard file (CAR, EMPLOYEE, GGDEMO).
Many times, what occurs is a symptom, not a cause.
When debugging, COPY the file and start removing a little at a time, until it works. Then see what is affected by the addition of the last removed item.
Alternatively, Use –GOTO to eliminate lines, and add back in until it doesn’t work.
FOCUS Debugging TechniquesIntegrity
FOCUS FilesCompare ? FDT vs Master File DescriptionCheck Physical vs. logical TableFRun VALIDATE FOCEXEC
Sequential FilesCompare CHECK FILE (minus GROUPs,
POSITION segments) vs LRECLVSAM Files
Compare IDCAMS vs Master File Description
Testing database validity
FOCUS Debugging TechniquesTesting Database Validity
****************LOGICAL COUNT****************STATUS OF FOCUS FILE CARCOUNT OF FIELD OCCURENCES THROUGH A ‘TABLEF’ COMMANDON 02/08/95 AT 19.39.44
ORIGIN COUNT 5COMP COUNT 10CARREC COUNT 18BODY COUNT 18SPECS COUNT* 18WARANT COUNT 8EQUIP COUNT 25
TOTAL 102
NOTE: SEGMENT COUNTS FOLLOWED BY ‘*’ ARE FOR UNIQUE SEGMENTS. THESE COUNTS MAY NOT AGREE WITH THE PHYSICAL COUNT FOR THAT SEGMENT. THIS CAN OCCUR WHEN DEFAULT VALUES ARE SUPPLIED FOR NON-EXISTENT UNIQUE SEGMENTS.
****************LOGICAL COUNT****************STATUS OF FOCUS FILE CARCOUNT OF FIELD OCCURENCES THROUGH A ‘TABLEF’ COMMANDON 02/08/95 AT 19.39.44
ORIGIN COUNT 5COMP COUNT 10CARREC COUNT 18BODY COUNT 18SPECS COUNT* 18WARANT COUNT 8EQUIP COUNT 25
TOTAL 102
NOTE: SEGMENT COUNTS FOLLOWED BY ‘*’ ARE FOR UNIQUE SEGMENTS. THESE COUNTS MAY NOT AGREE WITH THE PHYSICAL COUNT FOR THAT SEGMENT. THIS CAN OCCUR WHEN DEFAULT VALUES ARE SUPPLIED FOR NON-EXISTENT UNIQUE SEGMENTS.
Run VALIDATE On the FOCUS CAR file
FOCUS Debugging TechniquesTesting Database Validity
STATUS OF FOCUS FILE: CAR FOCUS A1 ON 02/08/95 AT 19:39:44 ACTIVE DELETED DATE OF TIME OF LAST TRANSSEGNAME COUNT COUNT LAST CHG LAST CHG NUMBER
ORIGIN 5 11/16/89 16:18:50 53COMP 10 11/16/89 16:18:50 53CARREC 18 11/16/89 16:18:50 53BODY 18 11/16/89 16:19:05 SPECS 18 11/16/89 16:18:50 53WARANT 8 11/16/89 16.18.50 53EQUIP 25 11/16/89 16.18.50 53***INDEXES***COUNTRY 11/16/89 16:18:50 53TOTAL SEGS 102TOTAL CHARS 3988TOTAL PAGES 8LAST CHANGE 11/16/89 16:19:05
STATUS OF FOCUS FILE: CAR FOCUS A1 ON 02/08/95 AT 19:39:44 ACTIVE DELETED DATE OF TIME OF LAST TRANSSEGNAME COUNT COUNT LAST CHG LAST CHG NUMBER
ORIGIN 5 11/16/89 16:18:50 53COMP 10 11/16/89 16:18:50 53CARREC 18 11/16/89 16:18:50 53BODY 18 11/16/89 16:19:05 SPECS 18 11/16/89 16:18:50 53WARANT 8 11/16/89 16.18.50 53EQUIP 25 11/16/89 16.18.50 53***INDEXES***COUNTRY 11/16/89 16:18:50 53TOTAL SEGS 102TOTAL CHARS 3988TOTAL PAGES 8LAST CHANGE 11/16/89 16:19:05
Compare to ? FILE On the FOCUS CAR file
FOCUS Debugging Techniques Code - Creating Test Data
Some problems require lots of data to reproduceSpecific data not importantProblem is volume-related
No one wants to create dataLet FOCUS do it
COMPUTE a counterUse EDIT to make alpha fields
FOCUS Debugging Techniques Code - Creating Test Data
DEFINE FILE realfile
CTR/I9 WITH CUSIP = CTR + 1;
CUSIP/A9 WITH CUSIP = CTR;
AMOUNT/D12.2M WITH AMOUNT = CTR + 1000;
…
END
TABLE FILE realfile
PRINT CUSIP AMOUNT …
ON TABLE HOLD AS name FORMAT format
END
DEFINE FILE realfile
CTR/I9 WITH CUSIP = CTR + 1;
CUSIP/A9 WITH CUSIP = CTR;
AMOUNT/D12.2M WITH AMOUNT = CTR + 1000;
…
END
TABLE FILE realfile
PRINT CUSIP AMOUNT …
ON TABLE HOLD AS name FORMAT format
END
FOCUS Debugging TechniquesCode - Creating Test Data
MODIFY FILE xxxCOMPUTE TEST/A1=;FIXFORM TEST/1REPEAT &number NOHOLDCOMPUTECTR/I5=CTR+1;other fieldsMATCH ...ENDREPEATDATAXEND
MODIFY FILE xxxCOMPUTE TEST/A1=;FIXFORM TEST/1REPEAT &number NOHOLDCOMPUTECTR/I5=CTR+1;other fieldsMATCH ...ENDREPEATDATAXEND
FOCUS Debugging TechniquesPerformance
Are you using the latest FOCUS efficiencies? BY TOTAL Multi-Path Compiled DEFINES SET SAVEDMASTERS FOCUS 7.6 SET MODCOMPUTE=NATV SET DIRECTHOLD=ON
FOCUS Debugging TechniquesPerformance
FOCUS limits are being raised FOC198 --- ERROR WRITING FOCSORT Unlimited FOCSORT (FOCUS 7.6) 2G FOCUS File Limit SET FOCUS2GDB=ON (FOCUS for S390) XFOCUS database with 16GB partition MDI for FOCUS and XFOCUS (FOCUS 7.6)
FOCUS Debugging Techniques Performance
Questions to ask when analyzing performanceShould I use DEFINES ?Will COMPUTEs work the same wayWhy isn’t Screening returning correct results
? SET MULTIPATH? SET ALL
Do I need 2-pass processingNote time for each step.
FOCUS Debugging Techniques Performance