Mick,
You are still missing the point: 64k TRK limit is PER VOLUME. It regards
PDS, (basic) PS, and DA.
In other words, BDAM datasets are 64k TRK constrained as some other
datasets are.
Of course some (PDS) datasets cannot be multivolume, while DA (and PS)
can be, but that's different story.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 2018-11-02 o 12:51, Mick Graley pisze:
Hi Radoslaw,
If you combine all the rules for direct data sets across 2 or 3 pages of
the manual you get:
65,535 tracks per volume, 59 volumes, 16 extents per volume, 255 extents
across all volumes.
Which suggests to me a limit of 3,866,565 tracks.
Cheers,
Mick.
On Fri, 2 Nov 2018 at 11:40, R.S. <r.skoru...@bremultibank.com.pl> wrote:
Documentations says the following:
/Many types of data sets *are limited* to 65␠535 total tracks allocated
on any one volume, and if a greater number of tracks is required, this
attempt to create a data set will fail./
//
/Data sets that *are not limited* to 65␠535 total tracks allocated on
any one volume are: /
* /A large format sequential; but cannot occupy more than 16␠777␠215
tracks on a single volume. /
* /Extended-format sequential/
* /UNIX files/
* /PDSE/
* /VSAM/
...lack od BDAM files here
I think, you missed very important point: 64k tracks *PER VOLUME*. The
limit is not per dataset.
--
Radoslaw Skorupka
Lodz, Poland
W dniu 2018-11-02 o 12:32, Mick Graley pisze:
Hi All,
I can confirm that there is no 64K tracks limit on DSORG=DA data sets.
I inherited a number of Adabas databases and they use DSORG=DA.
One of my larger databases has a data storage component that is 240,525
tracks (16,035 cylinders) in 9 extents across 8 volumes.
Organization . . . : DA
Record format . . . : F
Record length . . . : 5064
Block size . . . . : 5064
1st extent cylinders: 363
Secondary cylinders : 1668
Allocated cylinders : 16,035
Allocated extents . : 9
The rules are documented here:
https://www.ibm.com/support/knowledgecenter/SSLTBW_2.3.0/com.ibm.zos.v2r3.idad400/mdss.htm
Cheers,
Mick.
On Sat, 27 Oct 2018 at 01:10, Steve Smith <sasd...@gmail.com> wrote:
BDAM implies DSORG DA, but can use any RECFM. However, DSORG DA files
are
usually physically equivalent to DSORG PS, and often are so designated.
However, most DA files I've seen are indeed RECFM=F.
sas
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