File Resizing - jBASE

Hi,

I have one file F.MY.LARGE.FILE which has 1892458496 as file size.

To resize this file, I want to know what could be the best group and seperation for this file.

I belive jstat and jrf can do this.

Manually how can I decide the group and seperation?

Any Ideas??
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King Arthur

Hello King A

to make a decision on this you would need to identify the size of the record. this will help you decide on the seperation. after you have the seperation then devide the size of the file by he seperation and you will have the modulo. remember that you will always have wasted space so take that into consideration. There is no precise method in use yet as the system decides where to put the data. Try to get a modulo that will eliminate the overflow area for at least a week or two.
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takoor

Hi,

In my case the size of the record will be 2000 bytes.

How can I decide the seperation?
What is the default seperation?

The size of the file is 1892458496 bytes.

If we take 2000 as a seperation then the modulo could be 1892458496/2000 = 946229.

Am I right?
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King Arthur

The seperator is in increments of 512k. in your case of 2000 you would use a size of 2048k which is a seperator of 4.
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takoor

If I am not wrong, the default seperator(frame size) is 4096k.
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M A L A I

My Best advice dont do too much R&D on resizing...jrf and jstat have been working well in many client areas.....
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NJOY LIFE TO THE FULLEST

Hi Iron

I can't agree with your words.

jrf never consider for secondary file size.

But a perfect resize tool should resize the file by considering both the primary and secondary memory.
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M A L A I

as malai said u cannot have a perfect resize tool as the file is dynamic
based on the data.certain files will have more data at EOD and willl be empty at SOD. it is better to distribute a the file using a suitable distribution logic. but it may affect performance. bad size files also affect performance badly.

Confused again...

Does anyone know how jrf calculates the modulo?

I used to calculate by the following forumula.

PRIME(total_rec_bytes/frame_size).

Is it right? But jrf -R is showing a different figure. How to arrive that?
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M A L A I