Tony Harminc wrote:
On 18 April 2017 at 11:18, Thomas David Rivers <riv...@dignus.com> wrote:
Unless, another pair of eyes has seen some kind of documentation or example
of "this is the proper way to rename a non-VSAM file."
The TSO RENAME command in theory takes care of all this, at least for
cataloged datasets. As far as I know it is still not OCO, so if you
are an ISV with access to IBM's VPL facility (or whatever they call it
these days), you might have a look at module IKJEHREN. I don't have
VPL, so the latest source I have access to is for z/OS 1.4, and that
version is certainly full of code to deal with these issues.
Maybe IBM should cut & paste the comment lines from this module and
include them in the DFSMS book...
Aha!
What a terrific idea - I was able to find the old PLM from 1971 for
the RENAME command.
Looking at the flowcharts; it appears this is the order:
ALLOCATE data set
if ALLOC-successful ten
RENAME data set
if RENAME-succesful then
CATALOG New Data Set Name
if CATALOG-successful then
unCATALOG Old Data Set Name
if unCATALOG-not-successful
warning message to user
end-if
unALLOC data set
end-if
end-if
end-if
(There are some jumps around I'm not describing in the event
of failures of some of the steps.)
So - I think the basic steps are:
ALLOC data set
RENAME data set
CATALOG new name
unCATALOG old name
unALLOC data set
Perhaps it's the ALLOC/unALLOC steps that I'm missing - we don't
bother to do that...
I did see a note that you can RENAME/CATALOG an allocated data set
if the data set isn't OPEN... perhaps the allocation is holding a lock
of some kind?
- Dave Rivers -
--
riv...@dignus.com Work: (919) 676-0847
Get your mainframe programming tools at http://www.dignus.com
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