|Date: ||Wed, 16 May 2001 12:27:57 -0400|
|Reply-To: ||Gerhard Hellriegel <ghellrieg@T-ONLINE.DE>|
|Sender: ||"SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>|
|From: ||Gerhard Hellriegel <ghellrieg@T-ONLINE.DE>|
|Subject: ||Re: SAS/Share Advice|
If you use e.g. a DATA-step the dataset is locked as long as the step is
running. SHARE is ok, if you are working with a kind of record locking.
E.g. FSVIEW or FSEDIT do such things. If you are in FSVIEW, you should NOT
use "modify member", because this locks also the whole dataset. Instead you
should use modify record. The marked record is locked as long you are
working with it. Also with SAS/AF and /EIS you can use such features.
You should not expect such miracles, you seem to think of! Also databases,
which can work with record locking do not allow updates while a table is
loaded for example.
However I think, SHARE is able to provide some services which allow you to
wait for a locked dataset until it is free. You should refer to the manual
In your case a file-lock is necessary, because you can only add a new
variable by rewriting the whole dataset. For such "reorganizations"
concurrent access is not possible!
On Wed, 16 May 2001 13:48:16 +0100, Graeme Kirton <gkirton@FILCS.COM> wrote:
>Hi folks, we've just aquired SAS/Share here because it was apparently all
>answers to our concurrency issues. I've now set this up to what I belive
>correct, only as a test I opened a remote.dataset in viewtable, then on
>session I tried to create a new variable on that remote.dataset etc. All
>was a file-lock multi-user access error. I thought share would manage
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