Mainframe Application Support

TSO : It stands for Time Sharing Option .  It provides command-line-interface to zOS. It fulfills the similar purpose to Unix login session. Time sharing means many persons can access the operating system concurrently.  TSO commands can be embedded in REXX execs or CLIST, which run interactively or in batch. It provides a text editor, batch job support and debuggers. It provides facility to submit job and store datasets via computer's operating system TSO Login Screen  ISPF : It stands for Interactive System Productivity Facility . It is frequently used to manipulate z/OS datasets. It provides terminal interface with a set of panels. ISPF Sceen ISPF FUNCTION KEYS PF 1 = Help PF 2 = Split the session PF 3 = End PF 4 = Return PF 5 = Rfind (repeat last find) PF 6 = Rchange (repeat lst change) PF 7 = Move Backward PF 8 = Move forward PF 9 = Switch between screens during a split session; goes with PF 2 PF 10 = Move left PF 11 ...

Mainframe is a high performance computer which supports multiple user at same time. It is used for large scale computing. It is highly reliable and secured. It is used by big organizations like banks, financial institution, retail sector, travel industry, military agencies etc  Application support is an essential process for any application to make sure The application is running fine on day to day basis. Help business when ever they require any information related to the application. To make sure the application is up and running as soon as possible when ever any abnormalities happen. Mainframe Application Support team may perform  Batch Execution Batch Scheduling Batch Optimization Batch Standard Consulting Production deployment Test component deployment Mid range Transition Process Automation   CA7 cleanup