On Jun 27, 2010, at 15:35, Kirk Wolf wrote: > If you allocate a DD to a PDS member and then OPEN it (using BSAM), is there > a way to get the TTR of the first block of the member after open? > Why BSAM, rather than BPAM and BLDL?
> Sure, I could read the first block, then do a NOTE, and then POINT back, but > what if it is open for WRITE or if it is empty.... > Write is tricky. I don't believe the TTR of the first block is fixed until you write it. Couldn't some concurrent process write an entire member and STOW it between your OPEN and your first write? And what about PDSE? And what about UNIX files? -- gil
