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CICS Interview Questions & Answers - Learning Mode

CICS Interview Questions & Answers - Learning Mode

Customer Information Control System (CICS?) is a family of mixed language application servers that provide online transaction management and connectivity for applications on IBM Mainframe systems under z/OS and z/VSE. CICS is middleware designed to support rapid, high-volume online transaction processing. CICS (Customer Information Control System) is an online transaction processing (OLTP) program from IBM that, together with the COBOL programming language, has formed over the past several decades the most common set of tools for building customer transaction applications in the world of large enterprise mainframe.

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CICS Interview Questions & Answers - Learning Mode
Try CICS Interview Questions & Answers - Exam Mode
Question: The error code AEIV?

Answer: This is the error code for length, if length of the source data is more than the receiving field, This error will occur. Source:
Question: What is the difference between the XCTL and LINK commands?

Answer: The LINK command anticipates return of control to the calling program, the XCTL command does not. Return to the calling program will be the result of the CICS RETURN command, specifying TRANSID(name of the calling program). Source:
Question: How a CICS Transaction be initiated?

Answer: Involving CICS Control programs and Control tables. a. Trans-id entered in terminal b. TCP with TCT recognizes incoming data c. SCP acquires the storage for the Terminal Input-Output Area (TIOA) d. KCP prepares control data for this task e.KCP, through PCT, tries to find the application program associated with the Trans-id. f. If PPT entry of the application program does not show the resident address of the program, KCP passes control to PCP, which fetches the application program from the load l Source:
Question: How many ways can we initiate a CICS Transaction? What are they?

Answer: A. Keying in the Transaction-id at the terminal
B. By coding an EXEC CICS START in the application program
C. By coding the transaction id and trigger level in the DCT (Automatic Task Initiation)
D. By coding the transaction id in the EXEC CICS return command
E. By associating the attention key with the PCT
F. By embedding the transaction id in the first four positions of a screen sent to the terminal
G. By using the Program List Table.
Question: what are the differences between DFHCOMMAREA and TSQ ?

Answer: Both are used to save data among tasks. but 1. COMMAREA is private to that transaction only . like every transaction has its own COMMAREA created by CICS as soon as the transaction is initiated . however TSQ , if queue id is known can be accessed by other transactions also 2. COMMAREA length is s9(4) comp i.e. 65k . but TSQ can have any length.3. COMMAREA is available only during the transaction is running. TSQ if created with auxiliary option resides in aux memory and available even if main mem Source:
Question: What is Pseudo-conversation?How it is achieved in CICS Programs?

Answer: The programming methodology in which the task will not wait for the terminal users response, but frees and resources after sending the message is call a PSEDUDO Conversational Technique. Terminating the task every time the application needs a response from the user and then starting the next transaction when the user presses a attention key is PSEUDO Conversational Processing. Source:
Question: What does the CEDF,CEMT,CEBR,CECI transactions do?

Answer: CEDF :
CICS-supplied Execution Diagnostic Facility transaction. It provides interactive program execution and debugging functions of a CICS programs.
CEMT : CICS-supplied Extended Master Terminal transaction. It displays or manipulates CICS control environment interactively.
CEBR : CICS-supplied Temporary Storage Browse transaction. It displays the content of Temporary Storage Queue ( TSQ ).
CECI : CICS-supplied Command Interpreter transaction. It verifies the syntax of a CICS comm Source:
Question: What is the difference between FSET and FRSET ?

Answer: FSET specifies that the modified data tag should be turned on before the map is sent to the screen. FRSET turns off the attribute byte; it's used to transmit only changed data from the terminal. Source:
Question: What is the difference between LINK and XCTL ?

Answer: The XCTL command passes control to another program, but the resources requested by the first program may still be allocated. A task does not end until a RETURN statement is executed. While in LINK command, program control resumes its instruction following the LINK parameter. The disadvantage of LINK is that it requires that both the calling program and the called program remain in main memory even though both are no longer needed. Source:
Question: What information do you get when an EXEC CICS STARTCODE is issued?

Answer: You will be able to determine if the application was started by (1) a transient data trigger level(QD), (2) a START command (S,SD), (3) user (U) or terminal input (TD), or (4) Distributed Program Link(D,DS). Source:
Question: What are the Cursor Positioning techniques in CICS?

Answer: Static Cursor Positioning : When defining the map field DFHMDF macro in the attribute parameter IC is coded, the cursor will be positioned in that field. This method of cursor positioning is called static cursor positioning Relative Positioning : Code the CURSOR option with a value relative to zero Symbolic Positioning : Move high values or ?1 to the field length in the symbolic map and code CURSOR on the SEND command. Source:
Question: What is the meaning and use of the EIBAID field ?

Answer: EIBAID is a key field in the execute interface block; it indicates which attention key the user pressed to initiate the task. Source:
Question: How would you resolve an ASRA abend?

Answer: In COBOL II start with CEBR, and get the offset/instruction Source:
Question: LENGERR, NOTAUTH and PGMIDERR are some of the common exception conditions that can occur with LINK and XCTL (True or False). ?

Answer: False Source:
Question: The error code AEIV?

Answer: This is the error code for length, if length of the source data is more than the receiving field, this error will occur. Source:
Question: Explain the basic difference between Intra partition TDQ and Extra partition TDQ?

Answer: INTRA PARTITION TD QUEUEs It is a group of sequential records which are produced by the same and / or different transactions within a CICS region. These Qs are stored in only one physical file ( VSAM ) in a CICS region, which is prepared by the system programmer. Once a record is read from a queue, the record will be logically removed from the queue; that is the record cannot be read again. EXTRA PARTITION TD QUEUEs It is a group of sequential records which interfaces between the transactions of Source:
Question: What is an AEY9 abend ?

Answer: DB2/IDMS not up Source:

Answer: DFHEIBLK is Execute Interface Block. It is placed in the linkage section automatically by CICS translator program. It must be the first entry in linkage section. CICS places values prior to giving control to the program and we can find almost any information about our transaction. Source:
Question: What is the size of commarea?

Answer: The default commarea size is 65k. Source:
Question: What information can be obtained from the EIBRCODE?

Answer: The EIBRCODE tells the application program if the last CICS command was executed successfully and, if not, why not. Source:

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