mainframe

Problem using FtpWebRequest to append to file on a mainframe

I am using FtpWebRequest to append data to a mainframe file. Each record appended is 50 characters long, and I am adding them one record at a time. In our development environment, we do not have a mainframe, so my code was written and tested FTPing to a Windows-based FTP site instead of a mainframe. Initially, I was writing each recor...

Why do mainframe greybeards refer to DB2/zOS as "he"?

If you ask a DB2/zOS engine DBA a question about DB2's behavior, the DBA will refer to the DB2 engine as "he" much the way a sailor uses "she" to refer to his ship. For example: "Once you fill the freespace, DB2 still wants to keep those rows in cluster order in the tablespace. That's why he'll split that page in half, and you end up w...

What're the advantages/disadvantages of RECFM=FB over RECFM=F?

While defining a dataset to be created, one of the JCL parameters, DCB has a positional sub-parameter RECFM, has possible values of F,FB,V,VB etc.. What're the advantages/disadvantages of RECFM=FB over RECFM=F or RECFM=VB over RECFM=V? And which case prefers to use what RECFM format? ...

Can somebody suggest good learning source of IMS?

I would like to learn working with IMS, can somebody suggest me a good source? I'm not sure if it matters to say that I have quite good exposure and experience with INSYNC DB2 and QMF. So anything that can depict and explain the advantages and disadvantages over IMS would be really helpful. Please provide me a good page where i get good ...

What does 'MGMTCLASS' of a dataset describe?

While allocating a dataset, What does MGMTCLASS of a dataset describe? To my knowledge it gives the retention and expiration period that it is gonna reside on disk and the possible values I have observed are BKUP35, NOBKNLIM etc. What are these stand for and what else are the possible value for this parameter? Hope I put my question exac...

Use different version of derby.jar then the one included with WebSphere?

I’m trying to use an imbedded Derby database from within a war file deployed on WebSphere for Z/OS. When I use code like the following to create a database I wind up creating a derby version 10.3 database using the derby.jar included with WebSphere server 7.0 instead of the version 10.5 derby.jar I include in my WEB-INF/lib directory. C...

Why are mainframes still around?

It's a question you've probably asked or been asked several times. What's so great about Mainframes? The answer you've probably been given is "they are fast" "normal computers can't process as many 'transactions' per second as they do". Jeese, I mean it's not like Google is running a bunch of Mainframes and look how many transactions/...

Mainframe Dataset

Hi, I have a sequential dataset which has some data formatted in columns. suppose below is the format of my dataset. Emp_ID Emp_name Emp_addr --------------------------------- I want to remove the column Emp_Name from the dataset. Can I do it without writing the COBOL program? Please let me know if we have any command to do th...

Mainframe : JCL DISP parameters

Hi, I would like to know the difference between KEEP and UNCATLG. As per my knowledge both will remove the catalog entry for the datasets. Thanks and Regards,Manasi ...

How do you get average of sums in SQL (multi-level aggregation)?

I have a simplified table xx as follows: rdate date rtime time rid integer rsub integer rval integer primary key on (rdate,rtime,rid,rsub) and I want to get the average (across all times) of the sums (across all ids) of the values. By way of a sample table, I have (with consecutive identical values blanked out for readabilit...

Does somebody work on DOC1 designer tool by Pitney bowes?

Hi, does anyone work on DOC1 designer tool, a Pitney bowes product. We use it at work for bill composition and later used on Mainframes. Please help me in finding out the best career path by means of this. Your help is highly appreciative. ...

Mainframe Batch Job Triggering

Hi, I am new to CICS. I have one query, Can we trigger Batch job thorough CICS transaction? I want to trigger a batch job through program which is executed by CICS transaction,is it possible? ...

DB2- fetching records having products in more than one store

I have a table having records as below store num product no. 0001 11 0002 11 0003 11 0001 12 0002 12 0001 13 I want to fetch records having products in more than one store. The result should be...

Code Management using Endevor

Hi, I am new to Endevor. I want to learn the Code Manmagement using it. Could you please provide me the link of Study Material for the same? Regards, Manasi ...

How to abend job intentionally

Hi, Is it possible to abend your job intentionally through COBOL program. suppose I have an Input file having Header,Detail and Trailer records. I will write a COBOL pgm which reads this file.If no Detail records are found in this file then I want to abend my job by giving some Abend Message and some Abend Code.Is it Possible? ...

Are Mainframes & MiniComputers still in use?

I've been looking into the history of computing. I'm just wondering if Mainframes & Minicomputers are still in use? I mean now a days PC's are very many times faster than mainframes in 90s. Even http://en.wikipedia.org/wiki/Google_platform doesn't say anything about mainframes. They also use PCs as their servers. I've no idea about Clou...

Parsing IBM 3270 data in java

I was wondering if anyone had experience retrieving data with the 3270 protocol. My understanding so far is: Connection I need to connect to an SNA server using telnet, issue a command and then some data will be returned. I'm not sure how this connection is made since I've read that a standard telnet connection won't work. I've also re...

append records to an existing file

Hi, If I want to append records to an existing file what DISP parameters do I need to use? ...

Telnet, Emulator ...and other issues

I was assigned to maintain a .NET application that use .NET emulator to connect to legacy mainframe system. The application uses library called PowerTCP emulator. But I see people use Putty to connect. I hear lots of terms that I cannot make sense off, because I have no knowledge at all about mainframe / emulator / telnet world. Like I h...

What is the infrastructure used for Stackoverflow, Twitter, LinkedIn and Facebook

I am curious, what is the infrastructure used for the following websites : Stackoverflow, Twitter, LinkedIn and Facebook ? (or any other social networks) ...