Mainframe For Dummies

Below process helps to find out the statement, caused the SOC7 error. Check the Sysout of RUNJCL . This shows the error statement and lists offset value Take the Offset Value 000003C0 Got to respective Compilation Job listing, check the sysprint Search for the offset value 0003C0 (delete +00 -- initial 3 letters of Offset value and search for it) check below 2 screen shots This Offset value is listed under line no 0045 – which refers to Move statement. Take this no. 045 and find for it in same sysprint. This points to the exact statement, caused SOC7 T his 045 pints to the Move statement 1526, this is the exact line in the program Check for the above line no. In source program . This points to the statement highlighted below . Check the statement, variable check-4, which is added to check-6. These are having different Picture clause. check-4 is alfhanumaric, holding some junk data, when this data is moved to Chcek-6 variable(of comp-3) creates SOC7 error. This is just an example to e...

    DB2-CICS Program Compilation and Execution  Process   1) Write a DB2/CICS program and compile it using DB2/CICS compailer JCL 2) Use BIND JCL for binding process 3) Now Sign on to CICS Region. 4) Define and install the Map . 5) Define and Install the Program. 6) Check whether there is any DB2 Connection. If not Create a connection using ceda def db2c(....) 7) Define and install the DB2 Entry using ceda def db2e(.......) 8) Define and install the DB2 Transation using ceda def db2t(.......) 9) Define and install the Transation 10) now your setup is ready and you can run your program using the transation ID Sample Screen shots – used for defining above process 4a. Define the map : MYMAPS 4b. Install map : MYMAPS 5a. Define the Program : PGM 5b. Install the Program : PGM 7b. Define the DB2ENTRY : VINAY 7b. INSTALL the DB2ENTRY : VINAY 8.a. DEFINE the DB2ENTRY : HARI 8.a. INSTALL the DB2ENTRY : VINAY GROUP = VIJAY 9.a. DEFINE the transaction for the program(Pgm) : VBVB 9.b...

Why DB2 and why not VSAM (DB2 Vs VSAM)? This is the common query raised by the programmers, whether to go with DB2/VSAM, hope below information helps. VSAM DB2 Definition Database with file Concepts Database built on File management storage system-DBMS concepts Security levels Provides at Dataset level only Provides Good security levels at various levels (like table, table space etc.,) Data Maintenance It’s difficult compared to DB2. Data retrieval or insertion or updates etc, is a bit difficult (puts more burden on programmer to achieve this). Simply speaking Query interface is not supported It’s easy to maintain data by using SQL Data retrieval or insertion or updates etc, is far easier using SQl . Query interface is ...

Write a DB2/CICS program Compile it using DB2/CICS compailer JCL Use BIND JCL for binding process Now Sign on to CICS Region. Define and install the program. Define and install the Transation. Check whether there is any DB2 Connection. If not Create a connection using ceda def db2c(....) Define and install the DB2 Entry using ceda def db2e(.......) Define and install the DB2 Transation using ceda def db2t(.......) now your setup is ready and you can run your program using the transation ID

Future for Mainframes in SOA While it is far too early to get an answer it is now possible to ask, as a serious rather than trivial question, whether there is scope to see new sales of zSeries mainframes grow into the SOA and web services-based market sectors as a result of new developments in integration tools, such as the recent appearance of DataDirect Technologies' major upgrade of its Shadow integration platform, for the traditionally back-office machines. Will it be enough to prove to be a positive lever on green field zSeries sales? It might still be a brave person who answered ‘yes’ right now, the opportunity now exists where the mainframe can start to play a full part in a web-services/SOA environment, running applications that can proactively participate in that environment rather than just be a passive contributor to it. While it may not be natural to think of a mainframe as a core system in such an environment, Version 7 of Shadow does offer the potential to move IBM...

Impact Analysis : I hope Below informaiton will provid you brief information on various steps involved in impact analysis ( when ur asked to add a new field?) Impact Analysis : This is a process to identify the various Copy books or Programs of Jcls or DB2 table etc are to be modified/impacted due the new changes , to meet the requirement.As per the requirement, programmer will have an idea, like what are the New fields/Existing field to be added/modify in 1. Copy Books 2. Files/Jcl 3. Database 4. In online Screen etc. 1. Impact Analsys On Copy Books (used by cobol programs) : Identify the copybooks to be modified as part of requirement in list1 Now search for various copy books Impacted because of the copy books listed in list1 and note them into new list List2 Now search for various copy books Impacted because of the copy books listed in list2 and note them into new list List3 Above process is continued till the search returns zero copy books impacted. Merge all above lists and eli...

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