JCL RESTART Parameter with Examples

This topic covers the JCL Restart parameter with Examples.As the name suggests this is used to Restart a JOB from any particular step instead of starting it from the beginning. This is very useful for the jobs with multiple steps and abends after executing few steps. In this case as few job steps were already

JCL JOB Card Parameters with Examples

JOB Card or Statement in JCL is the first statement which indicates the starting of that JOB. Operating system identifies the beginning of the job using this statement and also it tells the OS on how the job should be processed. This Card can be coded with 20 different Parameters to instruct the operating system

COBOL 77 Level Number Uses

77 Level Number Uses, significance:77 is a special Level number in COBOL which is used to declare the Individual Elementary data items. Of course, Individual elementary data items can be declared using 01 level but 77 declared fields does not allow any sub ordinate data field declarations. These have been very useful in earlier versions

COBOL Stop Run, GO Back and Exit Program

STOP Run Vs GOBACK  Vs Exit Program in COBOL: Stop Run, Go Back and Exit statements are to give control back from the program (in which these are coded as a last statement) to where this program is being called.  All works in the same by giving the control back but one gives it to OS where

COBOL Accept Statement

COBOL ACCEPT Statement: Accept statement in COBOL with examples – It is used to receive the data that has been sent from outside of that program. Data can be sent from any Terminal or from JCL or from system defined items like date functions. ACCEPTING multiple records from input is also possible. Accepting Data from

COBOL 88 level number with Examples

COBOL 88 Level Number or Condition Names  88 level number in COBOL is one of the most used declarations in mainframes development and it is considered as a special level number which is used to improve the readability of COBOL programs. As it gives a name to a condition, it is also called as ‘Condition

Important COBOL compiler options

Important Cobol Compiler Options SSRANGE, APOST, RENT, OFFSET, LIST COBOL programs which are coded are called Source module that are not executable. Source code goes thru a process called Compilation that produces object module or Load Module which is an executable code format. These Load modules are stored in a Load Library and are made

Mainframes Common SQL/DB2 CODES and resolution

Mainframes Common SQL/DB2 CODES and resolution 180 to 189 date related 180 –> Invalid date format. 203 –> reference column is ambiguous.. IT NEEDS TO BE QUALIFIED AS IT EXISTS IN MULTIPLE TABLES. This Comes when same column name exists in multiple tables (or same table is being used multiple times in same SQL) which

Joins and Unions in DB2

Joins and Unions in db2 Unions and Joins, both are used to retrieve the data from multiple tables but are served for different purposes. JOIN – Joins typically used where the data required to select are spread across multiple tables that are dependent on each other. For Example EMPLOYEE and DEPT are two tables.Here Employee

Class Parameter in JCL

CLASS Parameter in JCL is used to categorize the JOBs that runs in one OS installation. During installation itself all Class parameters are defined and assigned with specific attributes. These attributes decides whether or how to run a JOB. As we know all the JOBS submitted runs in an Initiator address space and every class
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