query regarding space parameter



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query regarding space parameter

Postby deepadnair » Thu Nov 18, 2010 5:22 pm

I have typed the statement SPACE=(100,(80,10),RLSE), but in the properties of the dataset only 78 blocks are allocated. why is this so?
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Re: query regarding space parameter

 

Re: query regarding space parameter

Postby Akatsukami » Thu Nov 18, 2010 6:03 pm

Two blocks were unused and therefore released.
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Re: query regarding space parameter

Postby steve-myers » Thu Nov 18, 2010 8:18 pm

Space is always allocated in track units. Your SPACE directed the system to allocate enough space for 100 80 byte records, which works out to 2 3390 tracks. You actually used less than 2 tracks, so the last track was released. One track can hold 78 80 byte records, which is why ISPF reports 78 blocks.
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Re: query regarding space parameter

Postby steve-myers » Fri Nov 19, 2010 10:42 am

Sorry, I meant to say 80 100 byte records; it's still 2 3390 tracks. You actually used 1 track, which is the equivalent of 78 100 byte records, which is what ISPF reported.
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Re: query regarding space parameter

Postby deepadnair » Fri Nov 19, 2010 11:00 am

for allocating 100 blocks each of has 80 bytes what i can do?
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Re: query regarding space parameter

Postby steve-myers » Fri Nov 19, 2010 11:14 am

See the JCL manual. It will tell you everything you ever want to know!
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Re: query regarding space parameter

Postby enrico-sorichetti » Fri Nov 19, 2010 7:53 pm

duplicate concept :D
I just wonder why this topic is exactly the same as
jcl/topic4698.html

and we are wasting time answering both of them !
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so that I am sure that the information requested can be reached with a very small effort
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