How to use AIX in ESDS to faster the processing

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi
how to Use AIX in ESDS.
i created a AIX ,Path.But i dont know hot to use it in program.

Normally ESDS is used for sequential processing.How AIX will be used to faster the processing?

Plz explain with sample cobol pgms.
Thanks in advance

William Thompson · Posted: Wed Feb 07, 2007 2:52 pm

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi
Thanks for ur reply
Normally ESDS will be support only for a sequential access.
key is used to fetch the record directly.

SELECT INPUTFL ASSIGN TO AS-DD1
ORGANIZATION IS SEQUENTIAL
ACCESS MODE IS SEQUENTIAL
ALTERNATE RECORD KEY IS EMPID
FILE STATUS IS INPUTFS.

I coded the above statement in my program.but am getting
A "RECORD KEY" or "ALTERNATE RECORD KEY" clause was found for a file that did not have "INDEXED" organization.

Thanks in advance

William Thompson · Posted: Wed Feb 07, 2007 3:24 pm

If you are going to access the file "sequentially" why use a key? If you are going to access the file by a key, then its organization is not "sequential", it is "indexed".
Does that help?

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi
Yes i understood.
Then how can be use the alternate index in esds?
whats the use of ALternate index in ESDS?
Can we specify some other access mode in ESDS?

William Thompson · Posted: Wed Feb 07, 2007 3:43 pm

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi
we can specify Access mode is sequential in KSDS.like that we cant specify Access mode is indexed in ESDS.

how can u access using key?

Can u give with examples and select Clause???

What i mentioned other than Sequential?

William Thompson · Posted: Wed Feb 07, 2007 4:49 pm

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi William
Thanks for ur reply.
we cant uise the Alternate Index in ESDS Cobol.Its not possible.
in CICS we can use the alternate index for ESDS.

Select filename assign to dd1
Organization is indexed
access mode is sequential.

We cant give this syntax in ESDS file.It wont accept this syntax.
It surely gives error.
If u can try this and let me know.It will be very useful for most of the people.
Because,i studied like we cant use other than SEQUENTIAL in ESDS file.But u r saying we can use the INDEXED organization.

Thanks
Bye

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi

SELECT INPUTFL ASSIGN TO AS-DD1
ORGANIZATION IS indexed
ACCESS MODE IS SEQUENTIAL
ALTERNATE RECORD KEY IS EMPID
FILE STATUS IS INPUTFS.

This syntax will not be work surely.

William Thompson · Posted: Fri Feb 09, 2007 2:39 pm

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi
If u can send me the code????

h.dinesh · New User Joined: 06 Dec 2006 Posts: 46 Location: Chennai

Hi,

I too tried to read ESDS randomly in Cobol but wasn't able to do. I got an old post which also says that we can read ESDS randomly in CICS

http://ibmmainframes.com/about160.html

I havn't tried in CICS till now...

May be it's time to dig up...

Dinesh

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi Dinesh
thanks for your post.Am also saying that what u posting.But William is in confident abt the ESDS random read in cobol.
William is keep saying that we can use the ESDS random read in cobol.

I asked him some sample code using ESDS random read in cobol..
Let us wait for his post..

Bye

mkssampathkumar · New User Joined: 31 Aug 2006 Posts: 57 Location: chennai

Hi William

Any updating regarding ESDS random read??????????????