On 2018-06-22 7:53 AM, Jesse 1 Robinson wrote:
I have a dim memory of learning ages ago that a PDS with 1 directory block is somehow 'different', that certain updates to it require fiddling with the VTOC in addition to changing data on a track. Sound familiar?
Once the last directory block has started to be used, its unused capacity is maintained in the data set VTOC entry. If there is only one directory block then then it is also the last directory block and so any member addition or deletion will also require a VTOC entry update.
Cheers, Greg ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
