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Q:

How does IDMS communicate with CICS?

Answer

They communicate via service MVS request calls.

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Subject: Mainframe Interview

Q:

Specify the CICS command used to read a VSAM record starting with prefix F. Code all the relevant options?

Answer

EXEC CICS READ


DATASET('FILENAME')


INTO(data-area)


RIDFLD(data-area)


KEYLENGTH(1)


GENERIC


LENGTH(WK-LEN)


END-EXEC.

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Subject: Mainframe Interview

Q:

The EIB field which gives the last CICS command executed is?

Answer

EIBRCODE

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Subject: Mainframe Interview

Q:

What CICS command do you need to obtain the user logon-id?

Answer

You must code EXEC CICS ASSIGN with the OPENID option.


 

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Subject: Mainframe Interview

Q:

Name some of the common tables in CICS and their usage?

Answer

PCT (Program Control Table) - Defines each transaction containing a list of valid transaction identifiers (transid) where each transaction is paired with its matching program.


PPT (Program Processing Table) - Contains a list of valid program names and maps and whether a current version is in the CICS region or needs to be brought in as a new copy.


FCT (File Control Table) - Contains a list of files known to CICS, the dataset name and status (closed/open, enable/disabled)


TCT (Terminal Control Table)- A list of the terminals known to CICS.

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Subject: Mainframe Interview

Q:

What is ENQ in CICS ?

Answer

If any one want to restrict Trans-ID to single user, enter trans-id with ENQ. It won't allow any one else to use the same trans-id.

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Subject: Mainframe Interview

Q:

What is the CICS LOAD command ?

Answer

The LOAD command retrieves an object program from disk and loads it into main storage - it's primarily used for a constant table that will be available system-wide.


 

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Subject: Mainframe Interview

Q:

How do you handle errors in CICS programs?

Answer

Check EIBRESP after the call or use the HANDLE condition.


 

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Subject: Microsoft Interview