>A colleague has made a logical data set DUMP of important data and downloaded >to his PC in binary (by mistake, without additional steps). As expected, after >uploading from PC to z/OS, the format is broken, and ADRDSSU doesn't recognize >the DUMP (uploaded as blksize=27998, lrecl=0, recfm=u).
>Any recovery ideas for this situation, how to recover the PC data to a >RESTORE-able dataset? :) The problem is that DSS Dumps are RECFM=U, and each block may have a different length, up to the maximum (usually half track). This is why DSS does not accept the dump after retransmitting back to z/OS (in binary, of course). I don't know if the format of the dump records is documented (outside of IBM), but looking at an (uncompressed) DSS dump data set, the individual blocks seem to be of format o Bytes 1-4 is the binary number of the record (block) within the dump data set. o Bytes 5-6 are maybe some flags. I see mostly x'0101', but also x'0202'. o Bytes 7-8 seems to be the number of bytes in this block including this field and the 6 bytes ahead. So to recover as a last resort, if you're desperate, you would need to o upload in binary as RECFM=U to z/OS. o read the RECFM=U blocks, e.g. with REXX o rebuild the original blocks using the information above o write the new RECFM=U blocks All of this is untested. -- Peter Hunkeler -- Peter Hunkeler ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
