random esds reading

aklima · New User Joined: 25 Nov 2005 Posts: 18 Location: uae

hi
can anyone tell me is there any option how to read esds file randomly?
if posible give the description detaily
thanks in

Success is not a destination that you ever reach. Success is the quality of your journey. --Jennifer James

khamarutheen · Active Member Joined: 23 Aug 2005 Posts: 677 Location: NJ

Hi frnd,
ESDS file cannot be read randomly. since it's a sequential file in VSAM v dont have the option for ESDS file to read it randomly

raghunathns · Posted: Mon Dec 19, 2005 2:15 pm

HI,

You can read ESDS randomly by using RBA. (Relative byte address).

EXEC CICS
read dataset("ds name")
into("WS-rec")
rba("address")
end cics.

you can find this in any cics books.

gowtham_1982 · Active User Joined: 02 Dec 2005 Posts: 109

hai aklima,

in addition to the reply of raghunathns, i want to add that, we can access an ESDS randomly from vsam through the RBA with the option FROM ADDRESS and TO ADDRESS option.

corrections welcomed,

gowtham

Balasubramanian · New User Joined: 23 Apr 2005 Posts: 13 Location: Bangalore

Hi,

Random access in ESDS is not possible by using COBOL, but the same can be done by using CICS

Thanks & Regards,
Balasubramanian S

aklima · New User Joined: 25 Nov 2005 Posts: 18 Location: uae

hi to all,
first of all thanx for all the answers.
hey i got the answer for random reading.
see why not decribing a data variable in working storage section with occurs clause and the moving the file to that variable and then read the variable randomly.
u just try out this cause i can tell only but cant do this practically.

rajesh_1183 · Posted: Thu Dec 29, 2005 2:23 pm

hi aklima,

ur solution is good if there are very few records.But if there are some millions of records means...then the program might take more storage space which is not accepted....