I'm a very experienced C programmer, but recently I came across some code on a mainframe that has a local variable. This is in a simple C function that declares this variable, and then strcpy / str...

I'm trying to automate downloading of some text files from a z/os PDS, using Python and ftplib. Since the host files are EBCDIC, I can't simply use FTP.retrbinary(). FTP.retrlines(), when used w...

I'm trying to do the linkage of a hello world in cobol, as in this tutorial, I can compile the program and get the new member in project.group.OBJ successfully, but when I link it with LINK project...

I’ve interned at a company that does a lot of mainframe work. Most of my mainframe experience has been using Java and Unix System Services. I’ve had some experience with the ISPF interface...

We are planning to replace IBM MQ with Apache Kafka to implement pub-sub use-cases in future. Currently Mainframe(running Z/OS) applications are written using COBOL programming language & pushi...

I ask myself a question about the z/os log: I just would like to know if all the operations getting started were always called by $HASP373 and IEF403I ? And for the status Ended called by $HASP39...

I have the following code to send a file through FTP using JCL: //FTP00001 EXEC PGM=IKJEFT01,DYNAMNBR=50 //OUT DD SYSOUT=* //AMSDUMP DD SYSOUT=* //SYSTSPRT DD SYSOUT=* //SYSIN DD DUMMY //SYSP...

I am writing Java code on z/OS and I need to find out which security manager (RACF, ACF2 or TopSecret) is active on the system. How can I do this?

I've seen the following paragraph naming structure lots of times: nnnn-PARAGRAPH-NAME. Where nnnn stands for a 4 digit number. Here is a complete example: 0000-MAINLINE. PERFORM 1000-INITIAL...

Is there an SQL way to show the privileges present on a table or view in DB2 Z/OS? I would like to achieve something like this: select * from sysibm.magic_table where table_name = 'users' |TABLE_...

We have SSH-based file transfer scripts currently set up for Linux-to-Linux and we're porting them to z/OS to go z/OS-to-Linux. Note that this is with USS, the UNIX system services within z/OS othe...

I'm a Unix hack, so I've got a script I run whenever I want to run some SQL. I call DB2 with my query and dump stdout to a file. Very neanderthal, but it works. I've got a table with a varchar(2867...

I'm having issues getting the C sockets API to work properly in C++ on z/OS. Although I am including sys/socket.h, I still get compile time errors telling me that AF_INET is not defined. Am I missi...

I have some Perl code (for performance analysis) first developed under Linux which now needs to be ported to the mainframe. Apparently REXX is the scripting language of choice on that platform but ...

I've been coding and managing Java & ASP.Net applications & servers for my entire career. Now I'm being directed towards involvement in mainframes, ie z/OS & JCL, and I'm finding ...

My colleagues and I have several hundred SQL stored procedures sitting on a hosted DB2/z database (version 8.1). We have no administrator rights and our access to the database is via QMF screens. D...

I have some questions about customers about NF mode for DB2. Google had very little information about it. I've been able to infer the following but I don't completely trust it... NF and CM (comp...