Natasa,
> Hello, > in order to prevent releasing of unused space for some datasets, I > allocated it > yesterday with MC that has Partial release parameter set to 'No'. However, > today when I look at some of those datasets, they look like the space was > first released (primary extent is 1 cyl, allocated was 200), and then as the > data was loaded it took 11 secondary extents. This is exactly what I wanted > to prevent. Can someone explain to me how this happened? > > General Data Current Allocation > Management class . . : MCNORLSE Allocated cylinders : 221 > Storage class . . . : MEDIUM Allocated extents . : 12 > Volume serial . . . : SSP122 > Device type . . . . : 3390 > Data class . . . . . : DCDYNV Current Utilization > Organization . . . : PS Used cylinders . . : 204 > Record format . . . : FB Used extents . . . : 12 > Record length . . . : 3000 > Block size . . . . : 27000 > 1st extent cylinders: 1 > Secondary cylinders : 20 > Data set name type : SMS Compressible : NO > > Regards, > Natasa > > ---------------------------------------------------------------------- > 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 > The fact that the allocated cylinders is greater than the used cylinders (221 > 204) leads me to believe that space was not released from the dataset (allocated cylinders would equal used cylinders). The 1st extent is just the size of the first extent and not the primary space allocation amount. Each allocation can be up to five extents, even more if you are using the storage space constraint relief features of SMS. I recommend you look at the fragmentation index on your volume(s) and run some defrags. Regards, John ---------------------------------------------------------------------- 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
