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if i am reading a file with some 50000 records and moving to
a DB2 table and suddenly the program abends in between, is
there anyway i could restart from the exact record at which
the job failed once the program restarts.

Answers were Sorted based on User's Feedback



if i am reading a file with some 50000 records and moving to a DB2 table and suddenly the program a..

Answer / raja

Yes . we can restart the job by using the restart. if it
abends in the middle, we can find the record by looking
into the SQLERROD3.

Is This Answer Correct ?    7 Yes 1 No

if i am reading a file with some 50000 records and moving to a DB2 table and suddenly the program a..

Answer / jai ho

You can use CHECK POINT-RESTART logic.That is nothing but increasing commit frequency .
LOGIC IS LIKE THIS
CHECKPOINT/RESTART Implementation:


STEP1: Create the CHECKPOINT-COMMIT record in the working storage section, to store the data, which is needed for the next unit of recovery.
STEP2: In the procedure division MAIN para: First check the restart status flag i.e. RESTART-IND of CHECKPOINT_RESTART table. If RESTART-IND = ?N? then if any output file existsopen output file in OUTPUT mode start the normal process end If RESTART-IND = ?Y? then Move the SAVE-AREA information to CHECKPOINT-COMMIT record if any output file exists do the FILE REPOSITION: Open the output file in INPUT mode. Repeatedly Read the output record and INSERT it into GLOBAL temp table FILE_POSITION_GTT Until the last unit of recovery write count. Close the output file. Open the output file in OUTPUT mode. open a cursor for a table FILE_POSITION_GTT repeatedly fetch a cursor and write the record information into the output file until end of cursor close a cursor end If input for the program is from cursor then skip the rows until COMMIT-KEY. If input for the program is from file then skip the records until COMMIT-KEY. End. Note: For more than one output files, delete GTT after repositioning each output file.
STEP3: Make a count for each Insert?s/Update?s/Deletes in RECORDS-PROCESSED-UOR variable.
STEP4: Go thro? the logic and find out the appropriate place where COMMIT WORK can be hosted. There check the frequency of COMMITS: IF RECORDS-PROCESSED-UOR > COMMIT-FREQ KEY (input) value of the programTO COMMIT-KEY MOVE checkpoint-commit record lengthTO SAVE-AREA-LEN MOVE checkpoint-commit recordTO SAVE-AREA-TEXT Update the CHECKPOINT_RESTART table with this information END-COMMIT
STEP5: Before STOP RUN statement; reset the RESTART flag of the CHECKPOINT_RESTART table. i.e. MOVE ?N? TO RESTART-IND Update the CHECKPOINT_RESTART table with the above information.

Is This Answer Correct ?    1 Yes 0 No

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IDENTIFICATION DIVISION. PROGRAM-ID. UPDT. AUTHOR.anbu. DATE-WRITTEN. AUG 13. ENVIRONMENT DIVISION. INPUT-OUTPUT SECTION. FILE-CONTROL. SELECT CMSTR ASSIGN TO CINP1 ORGANIZATION IS INDEXED ACCESS IS SEQUENTIAL RECORD KEY CM2-KEY FILE STATUS IS WS-CMSTR-FST. SELECT CTAB ASSIGN TO CINP2 ORGANIZATION IS ACCESS IS SEQUENTIAL RECORD KEY VSAM-WHSE- KEY FILE STATUS IS WS-CTAB- FST. DATA DIVISION. FILE SECTION. FD CMSTR. COPY RXCYFC20. FD CTAB. COPY AITYWHSE. ************************************************************ ****** *** WORKING STORAGE VARIABLES *** ************************************************************ ****** WORKING-STORAGE SECTION. 01 WS- VARIABLES. 05 WS-EB PIC X(02) VALUE ZEROES. 05 WS-DIV PIC 9(03) VALUE ZEROES. 05 WS-CMF-RECS-REWRITTEN PIC 9(01) VALUE ZERO. *** FILE STATUS VARIABLES *** 05 WS- FILESTATUS. 10 WS-CMSTR-FST PIC 9(02) VALUE ZEROES. 10 WS-CTAB-FST PIC 9(02) VALUE ZEROES. *** END OF FILE VARIABLES *** 05 WS-CMSTR-EOF PIC X(01) VALUE 'N'. 88 WS-CMSTR-EOF-YES VALUE 'Y'. 88 WS-CMSTR-EOF-NO VALUE 'N'. 05 WS-CTAB-EOF PIC X(01) VALUE 'N'. 88 WS-CTAB-EOF-YES VALUE 'Y'. 88 WS-CTAB-EOF-NO VALUE 'N'. **** ERROR VARIABLES **** 05 WC-ABEND-900 PIC 9(03) VALUE 900. 05 WE-ERR-CODE PIC 9(02) VALUE ZEROES. 05 WE-ABEND-CODE PIC 9(03) VALUE ZEROES. ************************************************************ **** ********* PROCEDURE DIVISON ********** ************************************************************ **** PROCEDURE DIVISION. 0000- BEGIN. PERFORM 1000-INITIALISE THRU 1000- EXIT. PERFORM 2000-PROCESS THRU 2000- EXIT UNTIL WS-CMSTR-EOF- YES. DISPLAY 'WS-CMF-RECS-REWRITTEN :' WS-CMF-RECS- REWRITTEN. PERFORM 5000-CLOSE THRU 5000- EXIT. GOBACK. 0000- EXIT. EXIT. 1000- INITIALISE. OPEN I-O CMSTR. EVALUATE WS-CMSTR- FST WHEN 00 WHEN 97 CONTINUE WHEN OTHER DISPLAY 'ERROR IN READING INPUT FILE: ' DISPLAY WS-CMSTR-FST MOVE WS-CMSTR-FST TO WE-ERR-CODE PERFORM 9999-ABEND-PARA THRU 9999-EXIT END-EVALUATE. OPEN INPUT CTAB. EVALUATE WS-CTAB-FST WHEN 00 WHEN 97 CONTINUE WHEN OTHER DISPLAY 'ERROR IN READING INPUT FILE: ' DISPLAY WS-CTAB-FST MOVE WS-CTAB-FST TO WE-ERR-CODE PERFORM 9999-ABEND-PARA THRU 9999-EXIT END-EVALUATE. 1000-EXIT. EXIT. 2000-PROCESS. READ CMSTR. EVALUATE WS-CMSTR-FST WHEN 00 CONTINUE WHEN 10 SET WS-CMSTR-EOF-YES TO TRUE GO TO 2000-EXIT WHEN OTHER DISPLAY 'ERROR IN READING INPUT FILE: ' DISPLAY WS-CMSTR-FST MOVE WS-CMSTR-FST TO WE-ERR-CODE PERFORM 9999-ABEND-PARA THRU 9999-EXIT END-EVALUATE IF CM2-RECORD-TYPE-SOLD-TO MOVE CM2-ENTERING-BRANCH TO WS-EB PERFORM 3000-READ THRU 3000-EXIT UNTIL WS-CTAB-EOF-YES END-IF. 2000-EXIT. EXIT. 3000-READ. MOVE WS-EB TO VSAM-WHSE-CD. MOVE 'WHSE' TO VSAM-WHSE-ID. READ CTAB. EVALUATE WS-CTAB-FST WHEN 00 MOVE WHSE-DIV-CODE TO WS-DIV PERFORM 4000-REWRITE-CMF THRU 4000-EXIT WHEN 10 SET WS-CTAB-EOF-YES TO TRUE GO TO 3000-EXIT WHEN OTHER DISPLAY 'ERROR IN READING TABLE FILE: ' DISPLAY WS-CTAB-FST MOVE WS-CTAB-FST TO WE-ERR-CODE PERFORM 9999-ABEND-PARA THRU 9999-EXIT END- EVALUATE. 3000- EXIT. EXIT. 4000-REWRITE- CMF. IF WS-DIV = 250 OR 252 MOVE 'F' TO CM2-FREIGHT- TYPE MOVE 1 TO CM2-FREIGHT-THRESHOLD- AMT ADD +1 TO WS-CMF-RECS- REWRITTEN REWRITE CM2-SOLD-TO- RECORD DISPLAY 'RECORD UPDATED' END- IF. * EVALUATE WS-CMSTR- FST * WHEN 00 * CONTINUE * WHEN OTHER * DISPLAY 'FILE NOT UPDATED' * DISPLAY WS-CMSTR- FST * MOVE WS-CMSTR-FST TO WE-ERR-CODE * PERFORM 9999-ABEND-PARA THRU 9999-EXIT * GO TO 4000-EXIT * END-EVALUATE. 4000-EXIT. EXIT. 5000-CLOSE. CLOSE CMSTR CTAB. 5000-EXIT. EXIT. 9999-ABEND-PARA. COMPUTE WE-ABEND-CODE = WC-ABEND-900 + WE-ERR-CODE CALL 'ILBOABN0' USING WE-ABEND-CODE GO TO 5000-CLOSE. 9999-EXIT. EXIT. 5000-CLOSE. CLOSE CMSTR CTAB. 5000-EXIT. EXIT. 9999-ABEND-PARA. COMPUTE WE-ABEND-CODE = WC-ABEND-900 + WE-ERR-CODE CALL 'ILBOABN0' USING WE-ABEND-CODE GO TO 5000-CLOSE. 9999-EXIT. EXIT. //this program is giving maxcc=0, but not updating..

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