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sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1013 Location: India




HI,
I have SQLCODE FFFFFC66. How to convert it to readable SQLCODE. This error occurred when executing a cobol program which uses CICS.
Thank You In Advance,
Sushanth Bobby 

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Robert Sample
Global Moderator
Joined: 06 Jun 2008 Posts: 8086 Location: East Dubuque, Illinois, USA




Windows has a calculator function that converts hex to decimal. There are also other ways to convert the value both on the web and on mainframes. FC66 is 922 decimal. 

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sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1013 Location: India




Robert,
In windows i have tried the CALCULATOR application for FC66, its giving 64614. I also tried in the EXCEL using =HEX2DEC("FC66"). Same result 64614.
Can you give me tip to how to convert in any one of the applications in windows or mainframe.
Sushanth Bobby 

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enricosorichetti
Global Moderator
Joined: 14 Mar 2007 Posts: 10272 Location: italy




negative numbers in binary are in two complement notation
FFFFFC66 ==> 39A ==> 922 

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Robert Sample
Global Moderator
Joined: 06 Jun 2008 Posts: 8086 Location: East Dubuque, Illinois, USA




Windows calculator, scientific mode, hex, key or click in FC66. Hit the +/ key to negate the value and note the 039A. Clear, enter 39A and hit the decimal key. See the value 922 on the display. Hit the +/ key again to reverse the sign to its original value. 

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sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1013 Location: India




Thank You Enrico,
Thank You Robert,
Sushanth Bobby 

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Terry Heinze
JCL Moderator
Joined: 14 Jul 2008 Posts: 1249 Location: Richfield, MN, USA




or subtract 64K (65536) from 64614 to get 922. 

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Terry Heinze
JCL Moderator
Joined: 14 Jul 2008 Posts: 1249 Location: Richfield, MN, USA




or have DB2 translate the error for you by calling DSNTIAC (DSNTIAR for batch) for a formatted version of the SQLCODE. 

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sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1013 Location: India




Thank You Terry,
Quote: 
subtract 64K (65536) from 64614 to get 922. 
I have one doubt, for any type of SQLCODE error will it be 64K only. What is the reason behind 64K, that is WHY 64K ?
Sushanth 

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dick scherrer
Site Director
Joined: 23 Nov 2006 Posts: 19270 Location: Inside the Matrix




Hello,
The decimal value of x'FFFF' is 65535. When 1 is added, it gives 65536  which is 64k. This is the largest number that will fit in 2 bytes. 

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Terry Heinze
JCL Moderator
Joined: 14 Jul 2008 Posts: 1249 Location: Richfield, MN, USA




Someone with a math background can probably explain it better than me, but I once noticed that if you increment 32,767 (the largest positive number that fits in a 2byte binary field) by one you get X'8000' which is 0. Increment by one again and you get 1. Again, you get 2. In other words every increment by a +1 results in a successively smaller number. The same thing happens with 64K. Once you reach the maximum positive number, adding +1 to it results in successively smaller numbers. I guess this is because the sign of a binary number is stored in the leftmost bit. As I said, someone with a math background could I'm sure explain it better. 

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sushanth bobby
Senior Member
Joined: 29 Jul 2008 Posts: 1013 Location: India




D.sh & Terry,
I just want to check is my calculation correct.
SQLCODE : FFFFFC66
splitting the SQLCODE in 2 parts,
first part : FFFF
FFFF+1 = 65536
second part : FC66
FC66 = 64614
Subracting the decimals of Part2 from Part 1,
922
And the ve sign is got by,
Quote: 
Once you reach the maximum positive number, adding +1 to it results in successively smaller numbers 
Final Result Code = 922
Sushanth 

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Terry Heinze
JCL Moderator
Joined: 14 Jul 2008 Posts: 1249 Location: Richfield, MN, USA




I don't fully understand 2s compliment but if you flip all the bits of X'FC66' which is 1111 1100 0110 0110 you get 0000 0011 1001 1001 which is X'0399'. Adding 1 you get X'039A' which is decimal 922. Reversing the sign, it becomes 922. A quicker way to get to the final result is to simply subtract 64K from the SQLCODE as shown by SQLCA. I don't know if that's more confusing or not. 

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Marso
REXX Moderator
Joined: 13 Mar 2006 Posts: 1230 Location: Israel




sushanth bobby wrote: 
I just want to check is my calculation correct.
SQLCODE : FFFFFC66
splitting the SQLCODE in 2 parts,
first part : FFFF
FFFF+1 = 65536
second part : FC66
FC66 = 64614
Subracting the decimals of Part2 from Part 1,
922
Sushanth 
No splitting of SQLCODE!!!
If you really want, you can do the full calculation (all numbers in hexa): 100000000  FFFFFC66 = 39A
But it's easier to use smaller numbers, they give the same result:
(100000000  FFFFFC66) = (1000000  FFFC66) = (10000  FC66)
Isn't that magic ??? 

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surya.kalyan
New User
Joined: 09 Jan 2007 Posts: 20 Location: Mumbai




A simple way:
1) Use the windows scientific calculator...
2) select hex in the radio button....
3) select Dword radio button (4 bytes)...
4) paste your number FFFFFC66...
5) press the button +/....
6) press =....
7) I got 39A...
8) select the dec radio button now...
9) the decimal number 922...
One more way using the calculator is:
Repeat the procedure till 4 in the steps above...
after pasting FFFFFC66
5) press NOT button...
6) add 1....
7) I got 39A...
8) select the dec radio button now...
9) the decimal number 922...
So, the number was 922
In short: The negative of a number is stored as Two's complement which is inverting the bits from zero to 1 (1's complement and then adding 1). 

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