What is difference between instream and cataloged procedure?

What is difference between instream and cataloged procedure?

In JCL there are two different procedures. One is Cataloged and the other one is in-stream. JCL procedures like any other languages are routines, we can reuse any no of times….More videos on YouTube.

Cataloged procedure	Instream procedure	Meaning
X/	+/	Procedure statement that you modified.

Can a cataloged procedure call an instream procedure?

We cannot code an instream procedure within a cataloged procedure.

What is instream procedure?

An in-stream procedure is a named set of job control statements in a job that can be re-executed within that job, simply by invoking the name of the procedure. This enables you to execute the set of control statements more than one time in the same job without having to repeat the statements.

What is instream procedure in JCL?

Instream procedure allows CNTL, comment, DD, ENDCNTL, EXEC, IF/THEN/ELSE/ENDIF, INCLUDE, OUTPUT JCL, and SET statements only. Instream procedure will not allow any other statements apart from above. Instream procedure will not validate for syntax errors until an EXEC statement calls the procedure.

What is cataloged procedure?

A procedure that cataloged in a library is called a cataloged procedure. It may be a personal library or system library. The library is of type PDS/PDSE. The name of the catalog procedure is a member name or alias name in the library.

What are the types of procedures in JCL?

JCL – Procedures or PROC

• The JOB statement and JES2/JES3 Control statements.
• The JOBCAT and JOBLIB statement.
• An instream procedure (an internal PROC/PEND pair)
• SYSIN DD *, DATA statements.

Can you code instream data in procedure?

You cannot use instream data inside a PROC. It is a rule. Instead, you code some dummy statement inside the PROC and override the particular step’s DD statement from the JCL before you execute it.

Which statements are invalid in a procedure?

The statement can’t occur in a Sub or Function procedure. This error has the following cause and solution: One of the following statements appears in a procedure: Declare, Deftype, Private, Public, Option Base, Option Compare, Option Explicit, Option Private, Enum and Type.

Which statement marks the end of an instream and cataloged procedure?

In-Stream Procedures: In-stream procedures are those written within the same JCL. Ideally, it should begin with a PROC statement and end with a PEND statement. Cataloged Procedures: A cataloged procedure is one that is separated from the JCL and coded in a different data store.

What is the difference between PROC and instream in JCL?

What is the difference between an instream and a catalogued PROC? PROC stands for procedure. It is ‘canned’ JCL invoked by a PROC statement. An instream PROC is presented within the JCL; a catalogued PROC is referenced from a proclib partitioned dataset.

Which JCL statement Cannot be placed in a cataloged procedure?

PEND is not mandatory in catalog procedure. Catalog procedure allows CNTL, command, DD, ENDCNTL, EXEC, IF/THEN/ELSE/ENDIF, INCLUDE, OUTPUT JCL, and SET statements only. The system procedure library is SYS1. PROCLIB and may change the library name based on the installation.

How do you instream data in JCL?

Instream data to a program can be specified using a SYSIN DD statement. In Example 1, input to MYPROG is passed through SYSIN. The data is provided within the JCL. Two records of data are passed to the program.

What is the difference between catalogued Proc and instream procedure?

If a PROCEDURE is placed in the same JOB as the PROC invocation then it is called INSTREAM PROCEDURE. INSTREAM PROCEDURE should start with a PROC statement and end with a PEND statement. CATALOGUED PROCEDURE should start with a PROC statement and PEND is optional.

What is an instream procedure?

If a PROCEDURE is placed in the same JOB as the PROC invocation then it is called INSTREAM PROCEDURE. INSTREAM PROCEDURE should start with a PROC statement and end with a PEND statement.

How to use instream procedure in JCL?

You code instream data set within the job and use it in that job as many times as you want. An Instream Procedure JCL Example EXPLANATION – Instream procedure should be defined , before any EXEC statement defined – Instream procedure startes with PROC and ends with PEND statements – Instream procedure is executed when we main jcl called.

How can we modify a procedure in cataloged procedures?

Cataloged Procedures We can modify a procedure by- Overriding, nullifying, or adding EXEC statement parameters Overriding, nullifying, or adding parameters to DD or OUTPUT JCL statements Adding DD or OUTPUT JCL statements.