What are TSO commands?

What are TSO commands?

Summary of TSO/E commands

Command	Function
ATTRIB	Builds a list of attributes for non-VSAM data sets.
CALL	Loads and executes a program.
CANCEL	Ends the processing of batch jobs submitted at your terminal.
DELETE	Deletes data set entries or members of a partitioned data set.

What is the correct procedure to logoff TSO?

When you are finished using TSO/E, issue the LOGOFF command to sign off from the system and end your terminal session. The system releases your user ID until the next time you issue the LOGON command. You can also sign off from the system by issuing the LOGON command.

Which type of data sets contain members?

In a sequential data set, records are data items that are stored consecutively. A partitioned data set consists of a directory and members. The directory holds the address of each member and thus makes it possible to access each member directly. Each member consists of sequentially stored records.

What is it called when you establish a link to a data set?

z/OS concepts. To use a data set, you first allocate it (establish a link to it), then access the data using macros for the access method that you have chosen. The allocation of a data set means either or both of two things: To set aside (create) space for a new data set on a disk.

Why is data linked?

Linked Data builds upon standard Web technologies such as HTTP and URIs, but rather than using them to serve web pages for human readers, it extends them to share information in a way that can be read automatically by computers. This enables data from different sources to be connected and queried.

What is dataset in JCL?

In the context of IBM mainframe computers in the S/360 line, a data set (IBM preferred) or dataset is a computer file having a record organization. Within a running program they are stored in the Data Control Block (DCB), which is a data structure used to access data sets, for example using access methods.

How is GDG defined in JCL?

Create/ Alter GDG in a JCL

1. NAME specifies the physical dataset name of the GDG base.
2. LIMIT specifies the maximum number of versions that the GDG base can hold.
3. EMPTY uncataloges all the generations when the LIMIT is reached.
4. NOEMPTY uncataloges the least recent generation.

What is GDG in mainframe?

A generation data group (GDG) is a collection of historically related non-VSAM data sets that are arranged in chronological order. That is, each data set is historically related to the others in the group. Within a GDG, the generations can have like or unlike DCB attributes and data set organizations.

What is the purpose of DD dummy statement?

One use of the DUMMY parameter is in testing a program. When testing is finished and you want input or output operations performed on the data set, replace the DD DUMMY statement with a DD statement that fully defines the data set.

What is DD dummy in JCL?

The DUMMY parameter specifies that no device is to be allocated to this DD statement and that no disposition processing or I/O is to be done. All other JCL parameters on a DUMMY DD statement have to be syntactically correct. Use the DUMMY parameter if you know you will not need a file in a job step.

What is Sysprint in JCL?

sysout : To print the output of the program in spool,it is a system defined program. sysprint : To print messages of the program execution, and ii contains compile source listing and line no, offset no. JCL related messages from a JES system are written to JESMSG.

What is a JCL in mainframes?

Job Control Language (JCL) is a name for scripting languages used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem.

What are the three types of JCL statements?

All jobs require the three main types of JCL statements: JOB, EXEC, and DD.

What are JCL statements?

JOB Statement is the first control statement in a JCL. This gives the identity of the job to the Operating System (OS), in the spool and in the scheduler.

How do I run a JCL job?

Procedure

1. Allocate a data set to contain your JCL. Use ISPF (or equivalent function) to allocate a data set named.
2. Edit the JCL data set and add the necessary JCL.
3. Submit the JCL to the system as a job.
4. View and understand the output from the job.
5. Make changes to your JCL.
6. View and understand your final output.

What is class parameter 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.

What is time parameter JCL?

TIME Parameter in JCL is a Keyword parameter which indicates the Processor Time required to execute the job/step in a JCL. This can be used either in JOB or in STEP or in both the places.

What is Parm JCL?

PARM parameter is an optional keyword parameter in JCL. PARM parameter is a way to pass a data from JCL to the program but the maximum amount of data which we can send to the program using the PARM Parameter is 100 character.

What is JCL Joblib?

A JOBLIB statement is used in order to identify the location of the program to be executed in a JCL. The JOBLIB statement is specified after the JOB statement and before the EXEC statement. This can be used only for the in stream procedures and programs.

Does Steplib override Joblib?

If you code both a JOBLIB DD and STEPLIB DD statement in the same job, the STEPLIB DD statement overrides the JOBLIB statement only for the one step. For that step only, the system ignores JOBLIB and first searches the private libraries specified on the STEPLIB DD statement.

What is difference between Joblib Steplib and Jcllib?

STEPLIB is defined after an EXEC and applies only to that step. It also contains the load libraries to be searched for the step. JCLLIB is defined at the start of the job before any EXEC and contains the procedure (JCL) libraries to be searched for any procedures (that is, anything not EXEC PGM=) or INCLUDE members.

What is Cond even in JCL?

COND=EVEN. When COND=EVEN is coded, the current job step is executed, even if any of the previous steps abnormally terminate. If any other RC condition is coded along with COND=EVEN, then the job step executes if none of the RC condition is true.

What is symbolic parameter JCL?

A symbolic parameter is a character string of 1 to 7 alphameric characters preceded by an ampersand (&). The first character after & must be alphabetic. When a cataloged procedure is processed each symbolic parameter is either assigned a value or nullified.

What is cond parameter in JCL?

COND parameter in JCL is to execute the JOB steps conditionally. It validates the return code from previous steps and if it is satisfied then bypasses that step from execution and terminates the job if there is no special COND parameters in the succeeding JOB steps.

How do you Abend a job in JCL?

Put the cond= on each step you do or don’t want to run following the completion of the STEP1. Basically, if the condition specified is TRUE, the step will not run. You can then write a simple program that will run and blow up based on the same conditions. Basically, whenever it runs, it blows up.