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Narsimha · Beginner Joined: 03 Dec 2002 Posts: 27 Topics: 14

Hi,

One of my friend sent a mail regarding some problem in CICS. Since I too don't know about the error he was facing, I am requesting anyone of you to help me out. Here is the problem....................
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When we excute an APPC(LU6.2) Converse command we get an error code of EOC (EIBRESP = +6).

As we all know that theory definition of EOC is End of Chain.

Can you please help me in finding out the following>>>>

1. When does this End of Chain indicator is set.?
2. Is it a software or hardware(Link) problem?
3. What should be look so that we do not get this error code?

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Thanks,
Narsimha

kolusu · Posted: Fri Jan 24, 2003 12:27 am Post subject:

Narsimha,

EOC is another condition that you encounter frequently using BMS. It occurs when the end-of-chain (EOC) indicator is set in the request/response unit returned from VTAM. EOC does not indicate an error, and the BMS default action is to ignore this condition.

some SNA devices segment long input messages for transmission. Each individual segment is called a request unit (RU), and the entire logical message is called a chain. CICS provides an option in the RDO TYPETERM resource definition BUILDCHAIN, that governs who assembles the chain. If the BUILDCHAIN value for the terminal is YES, CICS assembles the chain and presents the entire message to the program in response to a single EXEC CICS RECEIVE command. This choice ensures that the whole chain is complete and available before it is presented to the application.

If BUILDCHAIN(NO), the application assembles the chain. CICS provides one RU for each EXEC CICS RECEIVE command. The application can tell when it has received the last RU in the chain,because CICS raises the EOC (end-of-chain) condition at that time. CICS raises this condition even when there is only one RU in the chain, or when it assembles the chain, or when the input is from a terminal that does not support inbound chaining, like a 3270 display. An EOC condition is not considered an error; the CICS default action when it occurs is to ignore the condition.

EOC may occur simultaneously with either the EODS (end-of-data-set) or INBFMH (inbound-FMH) conditions, or both. Either condition will take precedence over EOC in determining where control goes if both it and EOC are the subject of active EXEC CICS HANDLE CONDITION commands.

Hope this helps...

cheers

kolusu

Narsimha · Beginner Joined: 03 Dec 2002 Posts: 27 Topics: 14

Hi Kolusu,

Thanks for your immediete reply. Could you please provide me the link for the documentation regarding the subject mentioned.

Thanks,
Narsimha

kolusu · Posted: Fri Jan 24, 2003 1:08 am Post subject:

Narsimha,

Search for 'EOC' in the following links and you will find the information which is posted above. click on the ICON which resembles the "TORCH LIGHT" OR "FLASH LIGHT" which will search the book for the keywords.

CICS Application Programming Guide

CICS Application Programming Reference

Hope this helps...

cheers

kolusu

Narsimha · Beginner Joined: 03 Dec 2002 Posts: 27 Topics: 14

Hi Kolusu,

Your links helped me a lot.

Thanks,
Narsimha