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mfguy01
New User
Joined: 06 Sep 2010
Posts: 30
Location: India
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Hi,
How can we recover a deleted dataset?
So far,I know 2 solutions, first is HRECOVER command and next is 'contact storage management team'.But want to know
1. Is there any other way to recover a deleted dataset?
2. How long a dataset resides after deletion..means period till we can recover a dataset.
I am asking this question for gaining knowledge only.
Thanks in advance..... |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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1) Application backups exist ? (b) Ask storage management
2) Ask storage management - site specific question |
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enrico-sorichetti
Superior Member
Joined: 14 Mar 2007
Posts: 10873
Location: italy
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| what has the question to do with cobol? |
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Anuj Dhawan
Superior Member
Joined: 22 Apr 2006
Posts: 6250
Location: Mumbai, India
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As an Application Developer - there are very less chances that you've any other way out.
When you say, a data set is deleted, it's either
- deleted per the regular archival policy at your shop.
- or an end-user has deleted it.
In both the cases, as expat has also indicated, if an application-backup, (using any means) is taken -- you can recover it from there. If the DS was backed up by HSM then you can use HRECOVER. How long the HSM will take care about the back-up - is a site specifc question. Every site has different retention policies and durations, as expat said.
On the other hand, actually when the data-set gets deleted, physically nothing happens. Only the pointers to the data are removed. If you'e curious and want to test - allocate a dataset using ABSTR . Add some easily recognisable data into the dataset. Delete the dataset . Reallocate the dataset using ABSTR . You should then be able to see the data that you added before deleting and reallocating the dataset. Create a copy of it then.
If you have no possibility to allocate the dataset without a close being performed, then after reallocating the dataset use the DFDSS print command and you will see the data - that as an Application Programmer you can do but don't try it at office, with "real-data". I'm not a Storage Guy - so can't really tell if there are ready-made tools available for this. |
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