March 25, 1980
With SyncSort 3.5 a more efficient version of IEBGENER is available.
This BetterGener will replace the standard IEBGENER for many simple
copy tasks. BetterGener has shown as much as a three to one
improvement in both EXCPs and CPU time over IEBGENER.
BetterGener is supplied as a module called WCSGENER. When WCSGENER is
executed it determines wether the job can be handled by SyncSort. It
then transfers control to either SyncSort or the standard IEBGENER.
In this way it is nearly transparent to users and very little JCL
modification is needed to use the more efficient copy. For example,
the following JCL would be used to copy a cataloged disk dataset:
//SAMPLE JOB 1234-56789,'A. USER'
//STEP1 EXEC PGM=WCSGENER
//SYSPRINT DD SYSOUT=A
//SYSUT1 DD DSN=input-file,DISP=SHR
//SYSUT2 DD DSN=output-file,UNIT=RENTAL,
//SYSIN DD DUMMY
BetterGener will cause two changes that users will notice:
· If the WCSGENER task is handled by SyncSort, the $ORTPARM DD may
be included to provide parameters to SyncSort. If this feature
is required it would be advisable to execute SyncSort directly
because $ORTPARM would be ignored if the old IEBGENER handles the
· If errors are encountered during a copy messages will be issued
by SyncSort. These messages will be prefixed "WER".
BetterGener will transfer control to the old IEBGENER if any of the
following conditions exist:
· Unit record input or output
· Concatenated input files
· SYSIN is not DUMMY
· Non-standard labeled input or output (NSL, AL, AUL, SUL)
· RECFM=U for input or output
· RECFM=FBS for input
· Track overflow
· Output to a PDS member
· DCB information (LRECL, RECFM, BLKSIZE) from the DD statements,
DSCB, or tape labels is incomplete or inconsistent
· Less than 64K of memory available
· EXEC PARMs present