Excellant Response Steve
bububut wrote: > Hi All, > > I am new to Mainframe (get to learn Mainframe about 3 months ago). I > find it amazing and interesting exploring the mf world. But I have met > many problems as well. Lucky to find here to put my questions^ > > One of them is: How to add (or remove) libraries to an existed dataset > concatenation? I do not want to disturb other libraries already in the > concatenation. Is there any command or utility that can do this? > > Thanks in advance for your help! > > Wei Welcome to the mainframe world, Wei. Where are you located? It's nice to know there are people jumping into the z/OS world (I assume you are talking about z/OS, but you need to be aware that there are a number of mainframe operating systems and it's always a good idea to specify which one you are talking about). Your question is a little odd because you did not specify a context. Data sets in and of themselves do not exist in a concatenation. But when you run a job or started task it is usually done using JCL; in JCL you can concatenate a string of data sets to belong under the grouping of a single DD name: but that is only in the context of that job or task. You can create a concatenation dynamically with the TSO allocate command or calls to various system services; again, such a concatenation exists only in the context of the program issuing the command or calls. Under z/OS UNIX in some situations (e.g., the STEPLIB environment variable) you can create a concatenation of libraries. But, once again, the concatenation only has signficance to the process where the environment variable is used. How you change a concatenation depends on how the concatenation is built: by JCL, by commands. or by setting an environment variable. Given that, can you tell us more specifically what you are after? -- Kind regards, -Steve Comstock The Trainer's Friend, Inc. 303-393-8716 http://www.trainersfriend.com z/OS Application development made easier * Our classes include + How things work + Programming examples with realistic applications + Starter / skeleton code + Complete working programs + Useful utilities and subroutines + Tips and techniques ==> Ask about being added to our opt-in list: <== ==> * Early announcement of new courses <== ==> * Early announcement of new techincal papers <== ==> * Early announcement of new promotions <== ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ____________________________________________________________ Click now to find a divorce attorney near you! http://thirdpartyoffers.juno.com/TGL2141/fc/BLSrjpTOXd4AE0voQEJ1w6qpO0VslJBzfi6oH8Q1JGX7YM7DfGyDqZf9qak/ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
