On 01/21/2012 07:54 AM, Peter Relson wrote:
how does IBM suggest doing a compress on a Linklist lib that needs
compressing, inquiring minds would love to know
There is no suggestion. This is simply not an operation that is supported
or can be supported in general.
Peter Relson
z/OS Core Technology Design
So the only functionally-equivalent, officially-sanctioned way to
accomplish this goal is still to
(1) create a new dataset with a different name and copy the data to it,
(2) modify PARMLIB LNKLST defs to replace the old library in linklist
with the new at next IPL,
(3) IPL.
And if for some reason you really must have the original dataset name,
repeat the process to get back to the old name.
All the other techniques that have been described here in the past to
achieve this and bypass or defer the need for an IPL either don't
guarantee the new library will be seen by all address spaces or carry
some risk. While those of us who have been around long enough are
fairly certain of specific cases at our own installation where the risks
of alternative methods are small enough and acceptable, it is
understandable that IBM does not wish to "endorse" techniques whose
success depends on SysProg competence and judgement and also in many
cases upon the tacit cooperation of Murphy in keeping unrelated system
failures from occurring in a narrow transition window during which
libraries and PARMLIB might be in a state where successful IPL and
recovery from system failure is not be possible (without an independent
z/OS recovery system).
--
Joel C. Ewing, Bentonville, AR [email protected]
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN
