> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:[EMAIL PROTECTED] On Behalf Of Glenn Miller
> Sent: Tuesday, September 20, 2005 9:01 PM
> To: IBM-MAIN@BAMA.UA.EDU
> Subject: Re: Curiousity: format of an unused page dataset?
> 
> 
> John,
> 
> Take a look at APAR OW55297 on IBMLINK.  It has a high-level 
> description of
> what you're
> seeing on the Page Datasets.  It also has references to other manuals.
> 

Glenn,

Thanks for the pointer. The explanation is fairly high level, with no
implementation details. However, it appears that in the past (pre-z/OS
1.3), the page data sets were simply initialized by filling them with 4K
blocks containing all binary zeros (or perhaps even random data?).

If this is so, then it would be relatively simple to initialize a page
dataset that had somehow gotten defined, but not initialized properly.

Muchas gracias!

--
John McKown
Senior Systems Programmer
UICI Insurance Center
Information Technology

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