- #DYNAMIC DUO MEANING HOW TO#
- #DYNAMIC DUO MEANING SERIES#
MERGE FIELDS=COPY simply states to merge the 2 files as is.
When referencing a previous GDG generation, you use -1 or -2 or -3 and so on. When referencing the current GDG generation, you use +0. When creating a new generation of a GDG dataset, you reference it as +1. What does it do? It merges the files that I have in SORTIN and combines it to the dataset that I have in SORTOUT. This step executes the DFSort utility and triggers the Merge parameter. Step #3: MERGE //MERGE EXEC PGM=SORT,COND=(4,LT) //SYSOUT DD SYSOUT=* //SORTIN DD DSN=,DISP=SHR // DD DSN=,DISP=SHR //SORTOUT DD DSN=(+1), // DISP=(NEW,CATLG,DELETE), // SPACE=(CYL,(1,1),RLSE),UNIT=SYSDA, // DCB=(LRECL=189,RECFM=FB,BLKSIZE=0,DSORG=PS) //SYSIN DD * MERGE FIELDS=COPY //* SCRATCH : It states that the GDG generation is deleted from all disks it occupies when uncatalogued from the GDG base.įor more information about GDG, please go here. NOEMPTY : This parameter states that it will remove only the oldest GDG generation entry when a new GDG is created that causes LIMIT to be exceeded. LIMIT(5) : It states that the GDG Generations are limited to 5. It says that if Step DSEXIST ends with RC 00 then this step will be bypassed. COND=(0,EQ,DSEXIST) : This is a CONDITION parameter. DEFGDG EXEC PGM=IDCAMS,COND=(0,EQ,DSEXIST) //SYSPRINT DD SYSOUT=* //SYSIN DD * DEFINE GDG(NAME() - LIMIT(5) - NOEMPTY - SCRATCH) /*Ī few important things to note about this step: My goal is to first validate whether or not the GDG exists. Since this is a generation dataset, you don’t really need to delete then define it again. So why did I create Step #1? GDG are normally defined once. It is grouped under a common name so when you need to access the previous file you may do so. Why use a GDG? One advantage that I think a GDG offers is the generation. To put it simply, GDG are datasets that has a generation number at the end. The 2 persons also lead ordianary lives as well as there alternat personality. What is a GDG? These are group of datasets related to each other by a common name. Dynamic Duo, a symbian relationship between 2 person each with special abilities. I wanted to showcase the use of GDG a.k.a Generation Data Groups. Why did I do this? It is because of Step#2. In this example, I am listing the dataset name. Its usage is to list the cataloged dataset that you created. This step executes the LISTCAT parameter of IDCAMS. I will break it down… Step #1: DSEXIST //DSEXIST EXEC PGM=IDCAMS //SYSPRINT DD DUMMY //SYSIN DD * LISTCAT ENTRIES('') /* So to start off, this is the JCL that I created: These are some of the most common utilities that you use when you are developing COBOL Programs. In this exercise I will show you 2 JCL Utilities: IDCAMS and DFSort. #DYNAMIC DUO MEANING HOW TO#
If you do not have access to that, please read this article on how to get one. We are going to use the zCOBOL Mainframe Environment for this exercise. So let’s try it out… JCL Utilities in action MERGE: Merge 2 or more datasets based on the given condition.OMIT: Omit records that satisfies the given condition.INCLUDE: Include records that satisfies the given condition.The most common DFSort control statements are the following: To put it simply, it is a sorting utility. It is a high performance data arranger developed for OS/390 and MVS/ESA. What is DFSort?ĭFSort is part of the Data Facility Product of IBM. Today, I am going to focus on that aspect and create a JCL that will execute the DFSort utility. And it gives you an instruction to use DFSort. We can finish anything that we put our minds to.The OMP COBOL Programming Course has a new COBOL Challenge. Friend 2: I’m not! Come on Michele, you know we are a dynamic duo.Friend 1: I hope we can get it done in time.Friend 2: I have to go somewhere with my family on Friday, but I can come over first thing Saturday and stay the night so we will have all day Saturday and Sunday to work on it.Are you going to make it over this weekend so we can finish it up? Friend 1: Hailey, this project is due on Monday.The two of them certainly do form a dynamic duo.Ī conversation between two friends doing a group project for school. They both have very unique experiences and work well together. Manager 1: I think Mitch should work with Janet.
#DYNAMIC DUO MEANING SERIES#
In the Netflix series Sabrina, the character of Sabrina Spellman and her cat familiar Salem form an incredible dynamic duo.Ī conversation between two managers in the office trying to decide who should work with who on an upcoming project.
In the DC Universe, Batman and Robin combine their strengths and unique talents to form an awesome dynamic duo.
0 kommentar(er)
