If you deleted a dataset and the DASD is thin provisioned, it will recycle the tracks when the VTOC is updated, and the records are gone. If you deleted a dataset and RACF has Secure erase, the tracks are erased before the VTOC is updated. If you deleted a dataset and another dataset has allocated and written on those tracks, the data is destroyed when overwritten. If you deleted a dataset, and the three ways to destroy the data have not occurred, then you use Absolute Track allocation to re-allocate those tracks and read them. The DCB must match, along with directory entries.
On Mon, Apr 14, 2014 at 10:50 PM, Paul Gilmartin <[email protected]> wrote: > On Wed, 9 Apr 2014 14:27:28 +0000, Storr, Lon A CTR USARMY HRC (US) wrote: >> >>When a dataset is deleted, it is scratched and its DSCB in the VTOC is freed. >>Hence, as far as I know, the dataset's data can only be accessed in one of >>two ways: >> > Pedantry: "have no DSCB"? Is there not in fact a DSCB describing such > an extent? Perhaps a Format 5, or thereabouts? > > -- gil > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
