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DB2 Guy
New User
Joined: 28 Oct 2008 Posts: 98 Location: Cubicle
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Hi,
A VSAM data set is migrated at my shop, I was under the impression that VSAM data sets never go off-line, does that mean volume on which the DSN was, is migrated?
Will posting the LISTCAT help getting bettr replies? |
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Robert Sample
Global Moderator
Joined: 06 Jun 2008 Posts: 8696 Location: Dubuque, Iowa, USA
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The HSM manual talks about the VSAM Data Set Migration Parameter so it is possible for VSAM data sets to be migrated and recalled. |
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Bill O'Boyle
CICS Moderator
Joined: 14 Jan 2008 Posts: 2501 Location: Atlanta, Georgia, USA
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If you run a LISTCAT and the dataset's been migrated to Cartridge, you may wait a while. If it has gone to Cartridge (MIGRAT2), submit it as a Batch Job and not from ISPF 3.4 or 6.
Is your site using DFHSM (Hierarchal Storage Management)?
Bill |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006 Posts: 19244 Location: Inside the Matrix
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Hello,
Quote: |
I was under the impression that VSAM data sets never go off-line |
An incorrect impression. . . Lots of vsam files get migrated when not in use. . .
Quote: |
does that mean volume on which the DSN was, is migrated? |
Probably not because entire dasd volumes are not typically migrated - files are migrated, but not dasd volumes. |
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Pete Wilson
Active Member
Joined: 31 Dec 2009 Posts: 580 Location: London
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Suggest you talk to your Storage Administrator. Assuming your dataset is SMS managed (i.e. it has a Storclas), then it is the Mgmtclas assigned to the dataset that determines it's Migration criteria. If you think it shouldn't be migrated and can justify it the Storage Admin people would be able to alter the configuration to prevent its migration. The Mgmtclas the dataset has been assigned can be seen in a LISTCAT. You can view the Mgmtclases available in your site can be viewed from ISMF option 3 panel (if you have access to them) which provides online help to understand what the values of each field mean.
It is also possible to do an IDCAMS ALTER to change the datasets Mgmtclas to a more suitable one, but that also requires appropriate security access. |
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