That's what I was afraid of. <*SIGH*> And the locally available data compare utilities (both home-grown and from vendors) don't do any better.
Thanks for the info. Peter -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Thomas Conley Sent: Tuesday, January 08, 2013 12:01 PM To: [email protected] Subject: Re: SuperC utility loses its place when comparing text files with many differences On 1/8/2013 11:12 AM, Farley, Peter x23353 wrote: > I have usually found that the SuperC utility (ASMFSUPC actually, the HLASM > Toolkit enhanced version) does a very creditable job of finding differences > in text or report files, and is quite useful in regression testing batch > application changes. > > However, I just discovered that the compare process can "lose its place" > comparing text files with a significant number of changes. I have an > application change that inserts an additional 4 lines of text every 6ith line > of the original text, with the differences and inserts scattered over all the > sections of a report. There are 115,400 new records and 115,400 changed > lines in total, arranged such that there are four changed lines immediately > preceding each of the sets of four inserted lines. The original file has > 268,716 lines and the new file has 389,323 lines. There are heading lines > for each page as well, so I used the DPLINE option to tell SuperC to ignore > the header lines and the entirely blank lines. > > However, after 13,467 lines of the original file and 20,154 lines of the new > file, SuperC seems to stop recognizing changed/inserted lines in groups and > starts reporting huge globs of deletes and inserts (6,439 deletes followed by > 10,778 inserts the first time it lost its place). > > Has anyone else seen this behavior? Is there anything I can do to help > SuperC "keep its place" and report the actual changes instead of globs of > inserts and deletes? > > TIA for your help with this problem. > > Peter Peter, I've seen this behavior myself, even on smaller files. It stops recognizing that lines are the same and just has huge blocks as inserts and deletes, even though the lines are the same. SUPERC support was unimpressed, I got the WAD. Regards, Tom Conley -- This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
