Bill Klein wrote:
The LRECL in the JCL includes the RDW. The "RECORD VARYING IN SIZE" does
*not* include the RDW. Therefore, it is quite true that the LRECL (in JCL)
should be 4-bytes larger than the minimum RECORD VAR[Y]ING FROM value.
^^^^
^
and this I suppose is OK. It is not, however, a requirement.
For performance reasons it is desirable that the number of spanned, i.e.,
relatively very large, logical records that QSAM has to cut ujp and paste
back together because they must be distributed among several, more than two
or three, successive physical blocks be minimized. Ergo, the number of
logical records that are much greater in size than the BLKSIZE= value - 4
should not be excessive.
On the other hand, the point of VBS is just to permit BLKSIZE < LRECL!
John Gilmore
Ashland, MA 01721
U.S.A.
_________________________________________________________________
Don’t just search. Find. Check out the new MSN Search!
http://search.msn.click-url.com/go/onm00200636ave/direct/01/
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html
