> -----Original Message----- > From: ITURIEL DO NASCIMENTO NETO [mailto:[EMAIL PROTECTED] > Sent: Friday, November 09, 2007 2:17 PM > To: IBM-MAIN@BAMA.UA.EDU > Subject: RES: Performance comparison: Hiperbatch, BLSR, SMB? > > Hiperbatch works only with sequential data. > If you use it random it will simply not work.
I must differ with you. We use Hiperbatch all night long in many, many jobs that use the file randomly and simultaneously (and my SMF gurus have the data and reports to back that up). Also, here is a quote from the last published Hiperbatch manual: Hiperbatch can place data in a DLF object only when the job reads or writes the data set sequentially. Once data is in the DLF object, then jobs can read the data from the object both randomly and sequentially. URL for the Hiperbatch manual is here (watch the wrap): http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/IEA5J700/2.2.2?SH ELF=EZ2ZO10I&DT=19990208095033#HDRRANDOM > SMB is a great tool and can be used for any kind of access, but you have > to pay attention in the ACB of the program that opens the dataset. If ACB > specifies RANDOM and SEQUENTIAL, (ACCESS MODE IS DYNAMIC in Cobol) you > have to select the most appropriate in JCL, otherwise your job can suffer. Agreed. BTDT, and when you select the right ACCBIAS it works very well. Peter This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- 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
