What does page datasets in SMS means

Srinivasa Rao · New User Joined: 21 Jun 2005 Posts: 75

Hi,

What does page datasets in SMS means and purpose of these datasets? I tried searching but ended up with nothing.

Could any one suggest me where I can gather information regarding this.

Thanks in advance

expat · Posted: Thu Feb 28, 2008 9:31 pm Post subject:

PAGE datasets are part of the z/OS operating system.

Srinivasa Rao · New User Joined: 21 Jun 2005 Posts: 75

Thats correct But looking for some more information.

CICS Guy · Posted: Thu Feb 28, 2008 9:56 pm Post subject:

IIRC, page datasets host the virtual storage when it's not occupying the physical memory

Bill Dennis · Posted: Fri Feb 29, 2008 12:43 am Post subject:

See page 1-32 in the MVS Init and Tuning Guide at this link for an explanation of PAGE datasets.

http://publibz.boulder.ibm.com/epubs/pdf/iea2e151.pdf

Bill Dennis · Posted: Fri Feb 29, 2008 12:52 am Post subject:

ANother possibility may be a reference to LINEAR VSAM or PDSE which store data in 4K blocks or "pages". The MVS architecture has the capability to move 4K blocks of storage easily, so these new dataset structures have adopted the page-sized data block.

The system PAGE datasets mentioned in the prior post also contain swapped out storage in 4K blocks.

enrico-sorichetti

page datasets are not, in principle, related to SMS

page dataset are essential components of all the Virtual storage operating systems

they are part of the paging architecture of the system

and are used to hold the virtual storage pages which, according to the paging algorithm, do not reside in real storage