Decimal Data Error Rpg
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Decimal Data Error In As400
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available for download here, and it has been updated since it originally ran [Updated 06/13/07] I have seen requests many times in the forums from programmers asking how best to handle data with invalid decimal data. Typically this type of error is first discovered when a decimal data error in cobol 400 program ends abnormally. I have found this problem occurs most often with data received from outside sources: rpgle monitor decimal data error customers and vendors. Many times this data comes from systems other than a System i. I've developed a command to identify and (optionally) "fix" errant data. What's in a Number? First, what is invalid decimal data? This is non-numeric data in a numeric field. For example, a field defined as "5s 0" should contain a number in the range of -99999 to +99999. The data is http://search400.techtarget.com/answer/What-is-a-Decimal-Data-Error invalid if it contains values such as ABCDE or 123A6. Of course in the case of a zoned-decimal field such as this one, it is acceptable for the last (and only the last) position to contain a value that appears to be alphabetic. This is because the last position of the field identifies the sign. To consider numeric values properly you must think in terms of the hexadecimal (hex) representation of the field. The first four bits of each byte are called http://www.itjungle.com/fhg/fhg061307-story01.html the "zone" and the last four bits the "digit". Values for each zone and digit can range from 0 to 9 and A to F for the values 0 to 15 in the base-16 (hexadecimal). The base-10 (decimal) numbers 0 to 9 are defined for zoned-decimal fields in hex as F0-F9, respectively. The last byte identifies the sign of the value. For this byte only, the zone portion can be either a C or F for positive values and a D for negative. The hex representation of the zoned-decimal value 123 stored in a "5s 0" field is: F0F0F1F2F3 or F0F0F1F2C3. Packed fields are stored differently. Normally packed fields have an odd length, such as "7p 0" or "9p 2". The physical length of the stored data is: (scale of field + 1) / 2. For example, a "7p 2" field is stored in (7 + 1) / 2 = 4 bytes. For packed fields each zone and digit contains a position of the value except for the right-most digit which contains the sign. If the number 123 is stored in a "5p 0" field, the hex value is 00123F or 00123C. Valid values for all zones and digits must be in the range 0-9, except for the last digit which must be F or C for positive values or D for negative. Identifying Errors How do we identify invalid data? This depends on the definition of the file fields. If a byte contains the he
This document provides information about finding and correcting decimal data errors. Resolving the problem It is not uncommon for http://www-01.ibm.com/support/docview.wss?uid=nas8N1018444 programs to have problems with decimal data errors when working with http://www.allinterview.com/showanswers/98267/what-is-decimal-data-error-in-rpg-iv-when-will-it-happens.html files that originated on mainframes, non-IBM systems, and the IBM System/36. Program-described files are normally used on these systems and can result in non-numeric hexadecimal values in numeric fields. It is also possible for a program on the IBM OS/400 or IBM i5/OS system to data error do this because program-described files are still available, especially for programs that have been migrated and are running in the System/36 environment. The following example takes advantage of the field descriptions in externally-described files to correct the problem. The program reads in each record and writes it out making assumptions on what the correct value should be. decimal data error You are responsible for evaluating the results of using this program. Because it is necessary to make assumptions, the results might not be what you require. However, there is a very good chance the results will be satisfactory. Always keep a back-up copy of the file until you evaluate the results and are comfortable with the end result. In the case of zoned numeric fields, hexadecimal values such as blanks, control characters, and unassigned hexadecimal values are normally converted to zeroes. When letters or special characters (for example, the ampersand) are encountered, the first hexadecimal character is converted to an F. For example, the letter A is C1 in hex, while the letter a is 81 in hex. Both are converted to F1, which is the number one. In testing, 8aA69 is converted to 81169. However, when certain values are encountered in certain positions in the field, the entire field can be converted to a zero value. For packed numeric fields, an incorrect value in any positi
AS400 >> IBM AS400 AllOther Suggest New Category WHAT IS DECIMAL DATA ERROR IN RPG IV...WHEN WILL IT HAPPENS? Question Posted / ddd 6 Answers 15844 Views CTS, I also Faced E-Mail Answers Answers were Sorted based on User's Feedback Answer / narendra If you have defined any field as numeric and the value being inserted into that field is character then system will throw the message "decimal data error". Is This Answer Correct ? 27 Yes 5 No Answer / madhusudhan For the above answer posted by Narendra, there are 19 People who told yes, but did they test this or verify. Create a Char variable of Lenth 5 and Numeric variable of lenth 5 and see the result . D Num1 S 5 P 0 D Char1 S 5 A INZ('ABCDE') C MOVE Char1 Num1 C Num1 DSPLY Num1 will not give a Decimal Data error , instead it gives the values Num1 = 12345. If you use eval C EVAL Num1 = Char1 Eval will fail during compilation itself. As per my analysis , Decimal Data error occurs when junk values or special characters are passed to Numeric variable. ( Ex : !, @ , #.$) . For testing Intialize the above variable Char1 with atleast one special character and just see the result. This is only one example which i have given , and i heard that during Parameter passing also this occurs , but dont know in which scenerio , if anyone knows more on Decimal Data error, kindly plz post. Is This Answer Correct ? 18 Yes 0 No Answer / priya Decimal data error occurs primarily when numeric field receives invalid values/numbers. The same goes for the case of parameter passing. When the file is opened by a program and the record containing the invalid data is read, you will not get an error. But if the field containing the invalid data is read in the program, and some arithematic operation is performed with that value it gives decimal data error. For eg by being the Factor1 of a MOVEx operation, or either factor in an ADD, SUB, DIV, MULT etc., or on the right-hand side of an EVAL, or if it is involved in a WRITE or UPDATE operation -- then it will be checked, and then the program will fail. Is This Answer Correct ? 3 Yes 0 No Answer / venkat suppose if i declare data area with the length of 8 char and i am receiving tha