Difference PS and PDS

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ABEND list for JCL

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what is ABEND?   An ABEND (abnormal end) is an exception condition which results in the abnormal termination of a program or software. It is a common terminology used in the mainframe world where a JCL terminates with an error code.  S0CB -    Attempting to divide by 0 and not using ON SIZE ERROR S002 -    Very large record length/ wrong record length Sx22 -   Job has been cancelled. The value of x will vary depending on the way the job was  cancelled. . S222 -    Means job was cancelled by a user or operator without a dump.                If a TSO session times out you will probably get an S522 ABEND code. S222 -    The job was cancelled (by subsystem or operator) because it violated               Some restriction. S522 -  ...
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Levels Numbers in COBOL

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level number are play very important role in declaration of the variables in the COBOL. level number are describe the hierarchy of data in the COBOL. level number available are   01 to 49 , 66, 77 and 88. level number are two types based on the usage. General purpose level number. Special purpose level number. General purpose level number: In this level number are start with low number 01 and  maximum number is 49. Based on this level number, the data items/variables are divided different categories. 1.Individual data item. 2.Group data item. 3.Elementary data item. Individual data item: it is a data item which will be the only one variable declaration. it has picture clause and no sub items. individual data item are unique number in the  program. example: 01              WS-NAME       PIC             A(10). 02              WS-C...
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COBOL + DB2 complication process.

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There are various step involved before we run/execute a COBOL + DB2 program.   Below step are the various steps.   Precompile.   Compile.   Link edit.   Bind.   Package & plan. Step 1: Precompile               COBOL compiler did not understand about SQL statement so, it undergoes to precompile. In precompile.     Expands all include copybooks which are written in program.     Extracts all SQL statements into DBRM and SQL statement are convert into call statements.    Generates time-stamp for modified source codes and DBRM .there are checked at run time.   Check syndicated error of SQL statements and validates the fields based on the table declaration from dclgen copybook.    Notes: precompilation process can be executed even if DB2 is down. DSNHPC    ----------- It is the program used for precompilation. Step 2:  ...
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