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Mohan Kothakota
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Joined: 12 Apr 2016
Posts: 15
Location: INDIA
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| How can we find length of the file which is stored on Tape? |
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vasanthz
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Joined: 28 Aug 2007
Posts: 1742
Location: Tirupur, India
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| If you mean the size of the tape dataset, then you can find from the Tape management system. For a fairly accurate value, multiply the number of blocks and the size of the block. BLKSIZE and BLKCNT in case of CA-1. |
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steve-myers
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Location: The Universe
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| I presume you mean the number of feet occupied by a file. This depends on the tape drive and is a moderately difficult calculation. |
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Mohan Kothakota
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Joined: 12 Apr 2016
Posts: 15
Location: INDIA
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| Thanks Vasanthz & Steve Myers. I mean Record length of the file which is on Tape. |
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Robert Sample
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Joined: 06 Jun 2008
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Location: Dubuque, Iowa, USA
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Look at your tape management system.
Use TAPEMAP. |
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Mohan Kothakota
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Joined: 12 Apr 2016
Posts: 15
Location: INDIA
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| Thanks Robert, unluckily we don't have TAPEMAP (4.6) option on the Main screen. |
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Nic Clouston
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Location: Hampshire, UK
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| You say "record length" and that infers that you are trying to find outy what the LRECL is so find the JCL or program that creates it. |
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Willy Jensen
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Location: Denmark
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Your tape management system should be able to tell you that, I'm pretty sure that at least RMM has that information. Otherwise look at the TAPEMAP program from CBTTAPE.ORG file 171. I seem to recall that you need special security access to use TAPEMAP because it reads the physical files of the tape.
Another possibility is to run a IEBGENER with output to a disk dataset, without specifying the output DCB. The lrecl and blksize will be copied, so you can check the DCB of the copied dataset. |
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Mohan Kothakota
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Joined: 12 Apr 2016
Posts: 15
Location: INDIA
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| Thanks Nic Clouston & Willy Jensen. |
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Robert Sample
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Joined: 06 Jun 2008
Posts: 8696
Location: Dubuque, Iowa, USA
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| Quote: |
| I seem to recall that you need special security access to use TAPEMAP because it reads the physical files of the tape. |
Yes, you need ICHBLP access in the TAPEVOL class to bypass label processing, and the JES2 job class has to support BLP processing. |
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