Infosys Mainframe Developer Interview Questions, Process, and Tips

Mainframe utilities are software programs used for various tasks like data management, job scheduling, and system maintenance.

• IEFBR14 - used for creating empty datasets

• IEBCOPY - used for copying datasets

• IEBGENER - used for generating datasets

• IDCAMS - used for defining and managing VSAM datasets

• DFSORT - used for sorting and merging datasets

Comp is a binary data type with fixed length, while Comp3 is a packed decimal data type with variable length.

• Comp is binary and fixed length, while Comp3 is packed decimal and variable length

• Comp stores data in binary format, while Comp3 stores data in packed decimal format

• Comp uses 4 bytes for each field, while Comp3 uses variable length depending on the precision required

• Example: Comp field with value 1234 will be st...read more

My salary expectation is based on my experience, skills, and the market rate for Mainframe Developers.

• Consider my years of experience in Mainframe development

• Research the average salary for Mainframe Developers in the current market

• Factor in the location and size of the company

Seeking new challenges and opportunities for growth.

• Looking for a more challenging role that allows me to further develop my skills

• Interested in exploring new technologies and methodologies

• Seeking a more supportive and collaborative work environment

• Want to take on more responsibility and leadership opportunities

Abend SOC4 is a system completion code indicating a protection exception error in a mainframe program.

• Check for invalid data or address in the program

• Review the program logic for any potential issues

• Ensure proper handling of data and memory allocation

• Use debugging tools like IPCS to analyze the error

Index is the position of an element in an array, while subscript is the variable used to access elements in an array.

• Index is a fixed value that represents the position of an element in an array.

• Subscript is a variable that is used to access elements in an array.

• Example: arr[2] - '2' is the index, while '2' is the subscript.

SPUFI stands for SQL Processing Using File Input. It is a tool used to execute SQL queries in DB2 databases.

• SPUFI is a menu-driven tool provided by IBM for executing SQL queries in DB2 databases.

• It allows users to interactively execute SQL queries and view the results.

• SPUFI can be used to test SQL statements before embedding them in application programs.

• It is commonly used by developers and database administrators for ...read more