Probably true for the OS itself but CA-1, for example, has been known to complain, properly in my opinion, about input datasets with DISP=NEW.
-----Original Message----- From: Gilbert Saint-Flour [mailto:snip] Sent: Monday, January 08, 2007 12:45 PM To: [email protected] Subject: Re: IEBGENER and unlabled tape On Monday 08 January 2007 14:40, Barry A Schwarz wrote: > You have an implied DISP=(NEW,DELETE). IEBGENER may not like that for > SYSUT1 which is input. > Add DISP=OLD to your JCL. If I'm not mistaken, you do NOT need to code DISP for a tape. What's important is the type of OPEN issued by the program. If the program issues OPEN for INPUT, then a volser must be present on the DD statement (or in the JFCB if OPEN TYPE=J). If the program issues OPEN for OUTPUT, then a volser is not required - if it's missing, a SCRTCH or PRIVAT volume will be requested in the MOUNT message. Additionally, if LABEL is NL, LTM or BLP, then DSN is NOT required, as the system will provide a temporary data set name (a previous poster incorrectly suggested that DSN had to be specified). ---------------------------------------------------------------------- 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

