Johnny, You may want to look into using Concurrent Copy with your backups. That way you won't lose datasets that are deleted after the start of the backup, and the actual backup will be closer to a real point-in-time image of all the datasets processed by the job.
Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Johnny Luo > Sent: Tuesday, April 29, 2008 8:09 PM > To: [email protected] > Subject: [IBM-MAIN] When will ADRDSSU start to ENQUEUE on data sets? > > Hi, > > We encountered a problem on our production system. > > A job was using DSS to backup a lot of data sets (logical dump) and we > got > ADR321E for one extended format PS data set: the data set was not on > the > supposed volume. > > This job will run more than 3 hours and we found out that another job > will > delete the data set and re-create it during that time (1.5 hours after > the > dump job starts). It might be the cause of ADR321E. > > And from the archive I found a similar thread: > > > > It is entirely possible that when DFDSS was building his process list > the > > dataset was on the volume. Between that time the dataset probably got > deleted > > and re-allocated. Naturally when DFDSS went to copy the dataset later > on, > it > > wasn't there. Hence the error message. > > Moral of the story: Don't delete datasets until after DFDSS has copied > them. > > > > > > Does that mean there is a time interval between DSS located the data > set via > catalog and DSS actually places the ENQUEUE on it? > > > > If it's true, from our experience this time interval for a big dump job > is > very long. Thus give another job the chance to delete the target data > set. > Do we have any method to ask DSS to ENQUEUE earlier? > > > > Thanks. > > > > -- > Best Regards, > Johnny Luo > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
