It sounds as if one of the allocation routines is getting some temporary storage but not zeroing all of it out, and the storage it happens to get contains residual data from whoever used some of that storage previously.
Bill Fairchild Franklin, TN ----- Original Message ----- From: "nitz-...@gmx.net" <nitz-...@gmx.net> To: IBM-MAIN@LISTSERV.UA.EDU Sent: Thursday, September 19, 2013 4:33:11 AM Subject: Allocation test Can someone please run this iefbr14 job and tell me what the space allocation is (number of directory blocks) on your system? // EXEC PGM=IEFBR14 //DD1 DD DISP=(,CATLG),DSN=TEST, // SPACE=(TRK,(1,0,0)),RECFM=F,LRECL=20,DSORG=PO Note that I deliberately request DSORG=PO but do not provide a directory space number. In my case the job ends with rc=0, the data set is allocated, but ISPF gets an I/O error when I use an "i" line command in front of it. The data set is allocated as PDS. When I change the space allocation to (TRK,(10000,0,0)), the job still ends with rc=0, the data set is still a PDS, but now it is allocated with 66000 "maximum directory blocks" displayed using the ISPF line command "i". In case you're wondering, the last PO data set allocated successfully using a batch job had 66000 directory blocks, and in my opinion that number is (invalidly) used for this batch job. Certainly the allocation behaviour is not consistent. Can anyone confirm the same behaviour or is this just another quirk on our system? Thanks in advance, Barbara ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN