Physical File

Can we create a LF without PFILE?

No you cannot create a lf without a PF
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swaminathan

Swaminathan, You are correct. We can not creat a LF without PF.

But question is can we create a LF without using PFILE keyword?

We are not able to create a LF without using PFILE keyword. By this keyword only we specify the Physical File name. If we don't specify the PFILE keyword we got 30 level severity error like below.
CPD7529 30 1 Message . . . . : PFILE or JFILE keyword not found or ignored.
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Regards,
Razuk.

Razuk answer is in your reply.

We can create a LF without PFILE using JFILE.

why we cannot create a lf without pf?

Because, Logical file doesn't contain data, it only gives the view of the physical file(access path). through without physical we cannot have the data, that's y we r creating a logical file using physical file.