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getvichu2000
New User
Joined: 19 Aug 2008
Posts: 4
Location: Phoenix
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When we navigate in ispf 3.4 for any dataset we get the storage informations like tracks %used XT device
In the above informaton what is "%used"?
Is it the %used on both primary and extended tracks
I need that to calculate the size of dataset in bytes
Also what is the way to find the size of the dataset in bytes using the above information |
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enrico-sorichetti
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Joined: 14 Mar 2007
Posts: 10873
Location: italy
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| Quote: |
Also what is the way to find the size of the dataset in bytes using the above information
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the allocated or the used ??
the percentage will be anyhow in terms of allocation units....
for example a 15 tracks dataset containing one record
will report 6.something% utilization if allocated in tracks
will report a 100% utilization if allocated in cylinders |
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getvichu2000
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Joined: 19 Aug 2008
Posts: 4
Location: Phoenix
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Can you please help me in calculating the size of the dataset in bytes using the below storage information of a dataset which will be displayed in ispf 3.4
Command - Enter "/" to select action Tracks %Used XT
MYDATA.FILE1 30 80 2 |
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Robert Sample
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Joined: 06 Jun 2008
Posts: 8696
Location: Dubuque, Iowa, USA
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You cannot calculate exact size of a dataset in bytes based on the data you're provided; the only way I know to find exact size is to read every record summing the individual record lengths.
You can approximate by 30 tracks times 80% = 24 tracks used (this could be 23 tracks and a record up to 24 full tracks used -- you don't know). Find the blocksize from ISPF 3.4, adjust to tracks, and multiply by 24 to get the approximate byte count. It'll be something less than 12,692,736 bytes. |
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Robert Sample
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Joined: 06 Jun 2008
Posts: 8696
Location: Dubuque, Iowa, USA
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| Sorry, total should be 1,359,936 or less -- don't know WHAT I hit on calculator to get 12 million bytes! |
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expat
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Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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| Robert Sample wrote: |
| Sorry, total should be 1,359,936 or less -- don't know WHAT I hit on calculator to get 12 million bytes! |
Can I borrow it for submitting my monthly invoice ? |
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Robert Sample
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Joined: 06 Jun 2008
Posts: 8696
Location: Dubuque, Iowa, USA
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LOL expat -- I'll be happy to calculate them for you  |
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