> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Kenaan Tabikh > Sent: Wednesday, February 13, 2008 1:03 PM > To: [email protected] > Subject: 3590 stacking performance via JCL? > > > Is anyone aware of a JCL parameter that enhances 3590 tape stacking > performance? Maybe something in DATACLAS? I was told about this but > cannot find anything. Maybe DCB=OPTCD=? > > Thanks, > > Ken Tabikh > Verizon Data Services
"enhances"? What does "enhance" mean in this context? The only thing that I know of is to use the RETAIN subparameter on the VOL parameter. That should keep the tape mounted on the drive (in most cases). It should also keep the tape positioned at the end of the last file written. This avoids the rewind / dismount / mount / forward-space-file operations, which can be very time consuming. -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology The information contained in this e-mail message may be privileged and/or confidential. It is for intended addressee(s) only. If you are not the intended recipient, you are hereby notified that any disclosure, reproduction, distribution or other use of this communication is strictly prohibited and could, in certain circumstances, be a criminal offense. If you have received this e-mail in error, please notify the sender by reply and delete this message without copying or disclosing it. ---------------------------------------------------------------------- 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
