How to ensure a hash file is 64bits.

holymac · Post by **holymac** » Mon Sep 18, 2006 12:40 am

Dear All,
How or what command can i use to check whether a hash file is 64bits or not.

Thanks in advance.

ray.wurlod · Post by **ray.wurlod** » Mon Sep 18, 2006 1:00 am

Search the forum. How you do this depends on whether a VOC pointer exists to the hashed file.

holymac · Post by **holymac** » Mon Sep 18, 2006 1:07 am

Ray i already created a pointer entry into VOC and executed the following command "UVFIXFILE hash_filename VLEVEL 0 TRACE 1" but the command screen was blank with the close button activated.

ray.wurlod · Post by **ray.wurlod** » Mon Sep 18, 2006 6:17 pm

Try

Code: Select all

SH -c "od -x hashedfile/DATA.30 | head -1"

as your command. Examine the first four bytes.
If they show acef 010c (or 010c acef on an Intel CPU), then it is a 32-bit hashed file.
If they show acef 020c (or 020c acef on an Intel CPU), then it is a 64-bit hashed file.
For static hashed files, omit the "/DATA.30" from the hashed file pathname.

holymac · Post by **holymac** » Tue Sep 19, 2006 5:32 am

Dear Ray,

I am not a premium poster so unable to read your full reply but was able to capture the command.Here what i did:

i. mkdbfile /crdrsk/data/HASH/PRV_MTH_ST_TEST 30 1 4 20 50 80 1639 -
64bit - The file was created successfully.
ii. executed SH -c "od -x /crdrsk/data/HASH/PRV_MTH_ST_TEST/DATA.30 | head -1" command.

Output was - This was supposed to be a 64bits.
0000000 acef 010c 0000 001e 0000 0000 0000 0001

I ran the command against a different hash file which was not changed to 64 and the output was still the same as above.

Where i went wrong?

Thanks

kduke · Post by **kduke** » Tue Sep 19, 2006 8:07 am

Here is the part you missed:
If they show acef 010c (or 010c acef on an Intel CPU), then it is a 32-bit hashed file.
If they show acef 020c (or 020c acef on an Intel CPU), then it is a 64-bit hashed file.
For static hashed files, omit the "/DATA.30" from the hashed file pathname.

So maybe both hashed files are 32 bit.

ray.wurlod · Post by **ray.wurlod** » Tue Sep 19, 2006 2:59 pm

Your hashed file was created successfully but not as a 64-bit hashed file. I don't know why; your mkdbfile command looks OK. Can you perhaps try it with the -64BIT option in upper case? How did you execute the mkdbfile command? For example, was it through ExecSH?

holymac · Post by **holymac** » Wed Sep 20, 2006 11:11 pm

Dear Ray and Duke,

Indeed the "BIT" must be in upper case. That solved the issue.

Thank you very much.

kduke · Post by **kduke** » Thu Sep 21, 2006 7:13 am

Good to know.

holymac · Post by **holymac** » Fri Sep 22, 2006 12:10 am

Thank you everyone for the inputs. Learned something new through this post. Appreciate it.

Have a nice day.