I have a COBOL program, RENT/31/ANY, that does the following
PSAOLD->TCB->TIOT->JFCB segments.
The program is run on z/OS 1.11 system. I don't know the PTF level, it is a
customer site.
If the program is run from a one step job, or as the first step of a job it
works.
However, subsequent executions of the program, second step and so on, fail with
a S0C4
while checking the JFCB TIO-LEN field. I have added Displays to the code
below, and
it appears that JFCB-ADDR, from TIOT-SEG, for the first DDNAME, is 1024 bytes
greater
in the second execution of the program from a job that executes the program two
times.
I take no credit or blame for the logic of the program. But I do need to
determine
the cause of the failure.
Any ideas???
//STEP010 EXEC PGM=CALLJFCB
//DD1 DD DSN=ANY.DATA.SET1,DISP=SHR
//DD2 DD DSN=ANY.DATA.SET2,DISP=SHR
//DD3 DD DSN=ANY.DATA.SET3,DISP=SHR
//STEP020 EXEC PGM=CALLJFCB
//DD1 DD DSN=ANY.DATA.SET1,DISP=SHR
//DD2 DD DSN=ANY.DATA.SET2,DISP=SHR
//DD3 DD DSN=ANY.DATA.SET3,DISP=SHR
Here is the program.
IDENTIFICATION DIVISION.
PROGRAM-ID. LDAGTJFC.
*----------------------------------------------------------------
* PASS JOB CONTROL INFORMATION TO CALLING PROGRAM
*
*
* USE THE TIO-LENGTH FOR ADVANCING THRU JFCB - 20 AUG 2013
*----------------------------------------------------------------
ENVIRONMENT DIVISION.
INPUT-OUTPUT SECTION.
DATA DIVISION.
FILE SECTION.
WORKING-STORAGE SECTION.
77 SUB1 PIC 9(04) COMP.
77 WS-PROG-ID PIC X(08) VALUE 'XXXXXXXX'.
RWP 77 WS-LEN PIC S9(4) COMP.
RWP 77 WS-LENGTH REDEFINES WS-LEN PIC X(02).
RWP 01 WS-TIOT-SEG-POINT.
RWP 05 WS-TIOT-SEG-POINTER USAGE IS POINTER.
RWP 05 WS-TIOT-SEG-PNT REDEFINES WS-TIOT-SEG-POINTER
RWP PIC S9(9) COMP.
01 TCB-ADDRESS-POINTER.
05 TCB-ADDR-POINTER USAGE IS POINTER.
01 TIOT-SEG-POINT.
05 TIOT-SEG-POINTER USAGE IS POINTER.
05 TIOT-SEG-PNT REDEFINES TIOT-SEG-POINTER
PIC S9(9) COMP.
01 JFCB-POINT.
05 JFCB-POINTER USAGE IS POINTER.
05 JFCB-POINT-RED REDEFINES JFCB-POINTER.
10 FILLER PIC X.
10 JFCB-LOW-3 PIC X(3).
LINKAGE SECTION.
01 DDNAME-DSN-ARRAY.
05 DDNAME-DSN OCCURS 100 TIMES.
10 DDA-DDNAME PIC X(8).
10 DDA-DSN PIC X(44).
01 PSA.
05 FILLER PIC X(540).
05 PSATOLD POINTER.
01 TCB-POINTER USAGE IS POINTER.
01 TCB.
05 FILLER PIC X(12).
05 TIOT-POINTER USAGE IS POINTER.
01 TIOT-START PIC X(24).
01 TIOT-SEG.
05 TIO-LEN PIC X.
05 FILLER PIC X(3).
05 DD-NAME PIC X(8).
05 JFCB-ADDR PIC X(3).
01 JFCB.
05 FILLER PIC X(16).
05 DS-NAME PIC X(44).
PROCEDURE DIVISION USING DDNAME-DSN-ARRAY.
SET ADDRESS OF PSA TO NULL
MOVE ZERO TO SUB1.
MOVE ZERO TO WS-LEN.
SET ADDRESS OF TCB TO PSATOLD.
SET ADDRESS OF TIOT-START TO TIOT-POINTER.
SET WS-TIOT-SEG-POINTER TO TIOT-POINTER.
ADD 24 TO WS-TIOT-SEG-PNT.
SET ADDRESS OF TIOT-SEG TO WS-TIOT-SEG-POINTER.
PERFORM VARYING SUB1 FROM 1 BY 1
UNTIL SUB1 > 100
OR TIO-LEN = LOW-VALUES
MOVE DD-NAME TO DDA-DDNAME(SUB1)
MOVE JFCB-ADDR TO JFCB-LOW-3
SET ADDRESS OF JFCB TO JFCB-POINTER
MOVE DS-NAME TO DDA-DSN(SUB1)
MOVE TIO-LEN TO WS-LENGTH(2:1)
ADD WS-LEN TO WS-TIOT-SEG-PNT
SET ADDRESS OF TIOT-SEG TO WS-TIOT-SEG-POINTER
END-PERFORM.
GOBACK.
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