HDEL in front of each dataset name, instead of D. Type HDEL on the first one, = on the rest.
On Thu, Feb 20, 2014 at 8:05 PM, Paul Gilmartin <paulgboul...@aim.com> wrote: > Often, after finishing a series of tests, I have several dozen data sets > to delete. Actually, I'm careless; often I don't delete them until the > next time I want to run similar tests, by which time most are migrated. > > Over the years, I've used several techniques: > > o Use TSO DELETE in an IKJEFT* step, possibly in an EXEC. > > o IEFBR14 with DISP=(OLD,DELETE) Does this JCL error if DSN > doesn't exist? If I use DISP=(MOD,DELETE) will it allocate the > data set that will never be used? I understand that JCL now > bypasses recall if the data set is migrated. Good. I understand > that job step allocation now proceeds in parallel rather than > sequentially. Better, but does this apply to the IEFBR14 special > delete processing? (2.1 only? We're not there yet.) > > o Type D in front of each on a DSLIST menu. Slow. I'm told that > our mostly non-sysplex configuration precludes some catalog > optimization that most programmers can rely on. And I must > remember to omit the .DATA and .INDEX members or I come back > from my coffee break and find my terminal hanging on a prompt. > > Pity: DSLIST processing seems to operate sequentially. I wish > that when I type I in front of several data sets it would recall > the others while I'm viewing one. > > o IDCAMS DELETE. This seems to be ignorant of migrate optimization. > Pity; IDCAMS DELETE is so close to TSO DELETE that that > optimization should be performed in common code. > > You've probably guessed I'm impatient; when I do get around to > cleaning up, I want it to be over so I can start my tests. > > What fits my skill set best would be a UNIX script that does: > > while DSN in ..., do ( _BPX_SHAREAS=NO some-rexx-exec address TSO > 'DELETE' DSN ) & done > > ... I might need to pace it lest I exceed PROC_MAX. Too bizarre? > Anything else wrong with it? Would I gain nothing because of > catalog single-threading? Any other ideas? > > Thanks, > gil > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
