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XMEN1980
New User
Joined: 02 May 2006 Posts: 5 Location: Chennai
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How to define the Blocksize of PS which is FB, that is if the Rec len is only 150. Is there any specific formula to do this? |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006 Posts: 19244 Location: Inside the Matrix
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Hello,
It is best to let the system determine the blksize.
You will not need to do any calculation. |
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expat
Global Moderator
Joined: 14 Mar 2007 Posts: 8797 Location: Welsh Wales
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As Dick said, let the system determine the blocksize,
all you need to code is RECFM & LRECL and z/OS works out the correct blocksize for the media being written to. |
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Anuj Dhawan
Superior Member
Joined: 22 Apr 2006 Posts: 6250 Location: Mumbai, India
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And, this is applicable to both whether one allocates via 3.2 option of ISPF menu or creates a new DSN via an JCL. |
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ksk
Active User
Joined: 08 Jun 2006 Posts: 355 Location: New York
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You can calculate block size using TSO commands like TSO BLKSIZE or TSO BLK. This would depend on your installation. But goodway is, as suggsted above, let the system decide the Blksize. |
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