I think this parameter is what you are thinking about
EXTENDEDADDRESSABLE
The non SMS VSAM LDS will be made eligible for Extended Addressability.
This parameter is only valid for a non SMS VSAM LDS. The Alter will not be
allowed if the data set is open at the time of alter. This parameter cannot be
NULLIFIED (for example: once a data set is marked for EA it cannot be unmarked).
Abbreviation: EXTADDR
Lizette
-----Original Message-----
>From: "R.S." <r.skoru...@bremultibank.com.pl>
>Sent: May 19, 2019 11:45 AM
>To: IBM-MAIN@LISTSERV.UA.EDU
>Subject: Re: Convert ZFS to Expanded format
>
>W dniu 2019-05-19 o 10:10, Gadi Ben-Avi pisze:
>> Hi,
>> Is there a way to convert a ZFS, or any other VSAM file, to expanded format?
>> We are running z/OS v2.3.
>
>Gadi,
>I think you need Extended Addressability (EA).
>Extented Format (EF) is pre-requisity for EA.
>*However* there is one exception: ZFS.
>You can ALTER ZFS.CLUSTER to Extended Addressability, EF is no longer
>required.
>The VSAM can also be non SMS-managed.
>
>So, if your goal is to grow ZFS beyond 4GiB, you can ALTER it.
>
>If you really want Extenede Format (what for?), you have to create new
>dataset from scratch.
>
>And of course there is no such gismo like Expanded Format. ;-)
>
>HTH
>
>--
>Radoslaw Skorupka
>Lodz, Poland
>
>
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