Difference PS and PDS

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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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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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difference between jes2 and jes3

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JES2 JES3       1.        Decentralization.       2.        Every processor the incoming job individually.       3.        It is prestep allocation.       4.        Dataset allowed before step is executed.       5.        It is a local process.       6.        Control statement (//*). 1. Centralization. 2. It control process and assign job to sub processor. 3. It is prejob allocation. 4. Dataset allowed before job is schedule. 5. It is global process. 6. Control statement (/*).
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