How to count the records in COBOL data file?what will happen if the file open in extent mode and corresponding is equal to OLD in jcl?by opening an empty vsam file in i/o wii get file status 35 how can you over come this ?

Interview Candidate
Aug 22nd, 2007
4
9273

Showing Answers 1 - 4 of 4 Answers

viji.mumbai
Profile Answers by viji.mumbai

Oct 3rd, 2007

Hi latha,Please eloberate use quastion in proper way so that every can understand in proper way, I mean, If u want to count a record after each fetch or what(simply u want know record count).77 WS-REC-COUNT PIC S9(8) VALUE ZEROS.READ IN-FILE AT END SET EOF NOT AT END ADD +1 TO WS-REC-COUNT.Perform above on loop or depending on requirement.JCL OLD Disposition overrides Programming file status. And hence All data available will be lost.And hence use DISP=MOD.by opening an empty vsam file in i/o wii get file status 35 how can you over come this ? ----------->> Elaborate ur question and post ur sysout so we can look into it.Thanks & RegardsHemantha Kumar

kalone
Profile Answers by kalone

Mar 14th, 2010

Q1. To count records in a file (in cobol) you can use the method given by hemantha .Or in JCL you can use COUNT in SORT to get the records.

Q2. If the file is OPENed in EXTEND mode in prog but in JCL Disp OLD is given then
prog will override the jcl i.e the records will be appended in the file.

Q3. To avoid it , use OPTIONAL while defining the file in cobol prog.