Installing Natural on z/OS

This document describes the steps for installing Natural (product code NAT) on z/OS.

Related Topic:

For information on how to run Natural in a z/OS environment, see the Operations documentation.

Notation vrs or vr:

When used in this document, the notation vrs or vr represents the relevant product version (see also Version in the Glossary).

Prerequisites

See General Prerequisites and System Support.

Installation Medium

The installation medium contains the following data sets required for product installation:

Data Set Name Contents
ICSvrs.LOAD Load modules for International Components for Unicode for Software AG (ICS)
ICSvrs.SRCE Source modules for International Components for Unicode for Software AG (ICS)
MLCvrs.JOBS Sample installation jobs for Software AG's mainframe license check software

The placeholder vrs in the library name represents the version of the license check software, which is not necessarily the same as the version of Natural.

For detailed information on the license check software, see Software AG Mainframe Product Licensing.

MLCvrs.LOAD Load modules for Software AG's mainframe license check software containing the LICUTIL license utility

The placeholder vrs in the library name represents the version of the license check software, which is not necessarily the same as the version of Natural.

For detailed information on the license check software and the LICUTIL utility, see Software AG Mainframe Product Licensing.

NATvrs.LOAD Load modules
NATvrs.LICS Product license file for Natural

For information on the license file and product licensing, see Software AG Mainframe Product Licensing.

NAZvrs.LICS Product license file for the zIIP Enabler for Natural

For information on the license file and product licensing, see Software AG Mainframe Product Licensing.

NATvrs.SRCE Source modules and macros
NATvrs.SYSF Natural system file definitions
NATvrs.OBJS Object modules
NATvrs.JOBS Sample installation jobs
NATvrs.INPL Natural objects
NATvrs.EXPL Natural example objects

Copying Data Sets to a z/OS Disk

Copy the data sets from the supplied installation medium to your disk before you perform the individual installation procedure for each component to be installed.

The way you copy the data sets depends on the installation method and the medium used:

  • If you use System Maintenance Aid (SMA), refer to the copy job instructions provided in the System Maintenance Aid documentation.

  • If you are not using SMA and want to copy the data sets from CD-ROM, refer to the README.TXT file on the CD-ROM.

  • If you are not using SMA and want to copy the data sets from tape, follow the instructions in this section.

This section explains how to copy all data sets from tape to disk.

Step 1: Copy Data Set COPY.JOB from Tape to Disk

  • Modify the following sample job according to your requirements:

    //SAGTAPE JOB SAG,CLASS=1,MSGCLASS=X
//* ---------------------------------
//COPY EXEC PGM=IEBGENER
//SYSUT1 DD DSN=COPY.JOB,
// DISP=(OLD,PASS),
// UNIT=(CASS,,DEFER),
// VOL=(,RETAIN,SER=tape-volser),
// LABEL=(2,SL)
//SYSUT2 DD DSN=hilev.COPY.JOB,
// DISP=(NEW,CATLG,DELETE),
// UNIT=3390,VOL=SER=disk-volser,
// SPACE=(TRK,(1,1),RLSE),
// DCB=*.SYSUT1
//SYSPRINT DD SYSOUT=*
//SYSIN DD DUMMY
//

    where:

    tape-volser is the VOLSER of the tape, for example: T12345,
    hilev is a valid high-level qualifier, and
    disk-volser is the VOLSER of the disk.

  • Execute the job to copy the data set COPY.JOB to your disk.

Step 2: Modify hilev.COPY.JOB on Your Disk

  • Modify hilev.COPY.JOB according to your requirements:

    Set EXPDT to a valid expiration date, for example, 99365.

    Set HILEV to a valid high-level qualifier, for example, USERLIB.

    Set LOCATION to a storage location, for example, STORCLAS=ABC or UNIT=3390,VOL=SER=USR123.

Step 3: Submit COPY.JOB

  • Execute hilev.COPY.JOB to copy single, multiple, or all data sets to your disk.

Installation Procedure

Be sure to read Installation Process and Major Natural Features before you start the installation procedure.

Step 1: Allocate and Copy the SMA User Libraries

(Job I002, Steps 0010, 0020, 0030, 0040)

  • Allocate the user-specific source, load and save libraries of System Maintenance Aid (SMA) and copy them to the LOAD.SAVE library.

    Make sure that the SMA parameters are set correctly:

     

    Set SMACREATE to Y (Yes); default is N (No).
    Set SMACOPY to Y (Yes); this is the default.
    Set both parameters to N (No) if you do not want to allocate and copy the libraries.
    Adjust the settings of the OPTION group parameters to meet your requirements.

Step 2: Prepare, Convert, Assemble and Link the License File

(Job I007, Steps 0101, 0102, 0104 and optional Steps 0111, 0112, 0114)

You must install a valid Natural license file. An additional license file is required if you want to install the zIIP Enabler for Natural to enable support of the IBM z/IIP (IBM System z Integrated Information Processor).

For detailed information on the license file and product licensing, see Software AG Mainframe Product Licensing.

  1. Copy the license file from the supplied installation medium to disk or transfer it from the PC as described in Transferring a License File from PC to a z/OS Host Using FTP in Software AG Mainframe Product Licensing.

  2. Set the System Maintenance Aid (SMA) parameter LICCHECK to Y (Yes).

    Check, convert, assemble and link the license file:

    Step 0101 Check license file NATvrs.LICS. This job runs the CHECK function of the LICUTIL license utility (see below).
    Step 0102 Convert license file into an assembler source. This job runs the MAKE function of the LICUTIL license utility (see below).
    Step 0104 Assemble and link the assembler source to generate load module NATLIC. This module is then linked to the nucleus in Job I060.

    The functions and option settings provided by LICUTIL are described in Using the License Utility: LICUTIL in Software AG Mainframe Product Licensing.

  3. This step is only required if you want to install the zIIP Enabler for Natural.

    Set the System Maintenance Aid (SMA) parameter LICCHECK-NAZ to Y (Yes).

    Check, convert, assemble and link the license file supplied for the zIIP Enabler for Natural:

    Step 0111 Check license file NAZvrs.LICS. This job runs the CHECK function of the LICUTIL license utility.
    Step 0112 Convert license file into an assembler source. This job runs the MAKE function of the LICUTIL license utility.
    Step 0114 Assemble and link the assembler source to generate load module NAZLIC. This module is then linked to the nucleus in Job I060.

Step 3: Link Natural Modules to an APF Library

(Job I009, Steps 1200, 1210, 1220, 1230, 1232, 1240, 1250)

If you want to use one of the Natural components listed in the table below, link the appropriate Natural module to an Authorized Program Facility (APF) library.

The table below indicates when a component is required and the System Maintenance Aid (SMA) parameters used to specify the module names.

Step/Component to be Installed Module SMA Parameter
Step 1200: Global Buffer Pool1

See also Step 4: Start the Global Buffer Pool.

NATGBP82 NAT-GLOBAL-BP

or

EDT-GLOBAL-BP
Step 1210: Authorized Services Manager (ASM)1

You must use an ASM in the following cases:

  • The Natural profile parameter BPPROP is set to PLEX or GLOBAL or GPLEX (buffer pool propagation is used).

  • Natural global buffer pools are allocated in the system key; see Step 4: Start the Global Buffer Pool.

  • Natural under CICS is used in a Parallel Sysplex environment (SIP function is required).

  • Natural under IMS TM is used in terminal-oriented, non-conversational mode (SIP function is required).

  • Natural under IMS TM is used, with the Accounting function writing SMF records.

  • IBM zIIP (System z Integrated Information Processor) enablement is required.

See also Step 20: Create and Start the Natural Authorized Services Manager.

NATASM82 NAT-ASM
Step 1220: Natural Roll Server1

You must use a Natural Roll Server in the following cases:

  • The server front-end of Natural RPC (Remote Procedure Call) is used.

  • Natural under IMS TM runs in a Parallel Sysplex environment.

  • Natural under CICS runs in a Parallel Sysplex or CICSplex environment.

See also Step 18: Create and Format the Roll File and Step 19: Create and Start the Natural Roll Server.

Depending on the setting of the SMA parameter NATRSM83, either NATRSM82 (NATRSM83=NO) or NATRSM83 (NATRSM83=YES) is installed.

NATRSM82 or NATRSM83 ROLLSRV, NATRSM83
Steps 1230 and 1232: Optimize Monitor Buffer Pool1

See also Step 21: Create and Start the Optimize Monitor Buffer Pool .

NATO4I82 NAT-EOIMBP
Step 1240: Message Buffer Pool 1

See also Step 22: Create and Start the Message Buffer Pool.

NATMBP82 NAT-MTBP
Step 1250: Impersonation with the Natural RPC (Remote Procedure Call)2

We recommend that you link the RPC server front-end into an APF-authorized LINKLIST library. This eliminates the need to provide the whole STEPLIB concatenation in the execution JCL of the Natural server APF-authorized. In this case, you have to issue the z/OS MODIFY command F LLA,REFRESH after the link edit.

See also Step 23: Create Sample JCL for the Natural RPC Server.

RPC Server Front-End NAT-RPC-FRONT

1 described in the Operations documentation

2 described in the Natural RPC (Remote Procedure Call) documentation

Step 4: Start the Global Buffer Pool

(Job I015, Steps 0100, 0101, 0102, 0104)

These steps are only required if you want to use a global buffer pool. For further information on the global buffer pool, see Natural Global Buffer Pool in the Operations documentation.

Installation of the Natural Authorized Services Manager (ASM) is mandatory if ALLOWUSERKEYCSA(NO) applies by default or has explicitly been specified in SYS1.PARMLIB(DIAGxx). See also Allocation of the Natural GBP in the Operations documentation.

  • Create the jobs required to start and stop a global buffer pool:

    Step Job Function
    0100 GBNASTRT Start global buffer pool
    0101 GBNASTOP Stop global buffer pool
    0102 GBEDSTRT Start editor global buffer pool
    0104 GBEDSTOP Stop editor global buffer pool

  • If you want to use a Natural global buffer pool, start the job GBNASTRT before using Natural.

  • If you want to use an editor global buffer pool, start the job GBEDSTRT before using Natural.

Step 5: Load the FNAT System File Definition

(Job I050, Step 0100)

Skip this step if you want to use an existing Natural FNAT system file.

Load the new Natural FNAT system file definition:

  1. Specify the database ID and file number of the Adabas file where to load the new FNAT system file definition by using the Adabas ADALOD utility.

    In addition, you must specify this database ID and file number in the Natural parameter module as described in Step 13: Build the Natural Parameter Module.

  2. Load the FNAT system file definition contained in the NATvrs.SYSF data set by using the Adabas ADALOD utility.

    The following ADALOD utility parameter must not be changed: 

    ISNREUSE=YES

    The following ADALOD utility parameter setting is recommended:

    USERISN=YES

    This avoids the Natural errors NAT9988 and NAT7397 after reorganizing the FNAT system file using the Adabas utility ADAULD or ADALOD.

Step 6: Load the FUSER System File Definition

(Job I050, Step 0101)

Skip this step if you want to use an existing Natural FUSER system file.

Load the new Natural FUSER system file definition:

  1. Specify the database ID and file number of the Adabas file where to load the new FUSER system file definition by using the Adabas ADALOD utility.

    In addition, you must specify this database ID and file number in the Natural parameter module as described in Step 13: Build the Natural Parameter Module.

  2. Load the FUSER system file definition contained in the NATvrs.SYSF data set by using the Adabas ADALOD utility.

    The following ADALOD utility parameter must not be changed: 

    ISNREUSE=YES

  3. If you want to use existing Natural applications, copy all user-written objects to the empty FUSER.

  4. If you want to use Natural Application Programming Interfaces (APIs), see Using a Natural API in the SYSEXT Utility documentation for further guidance.

Step 7: Load the Scratch-Pad File Definition

(Job I050, Step 0102)

This step is only required if you want to use read-only system files. See also Natural Scratch-Pad File in the Operations documentation.

You can skip this step if you want to use an existing Natural scratch-pad file.

Load the new Natural scratch-pad system file definition:

  1. Set the System Maintenance Aid (SMA) parameter NAT-SCRF to Y (Yes).

  2. Specify the database ID and file number of the Adabas file where to load the scratch-pad file by using the Adabas ADALOD utility.

    In addition, you must specify this database ID and file number in the Natural parameter module as described in Step 13: Build the Natural Parameter Module.

  3. Load the scratch-pad system file definition contained in the NATvrs.SYSF data set by using the Adabas ADALOD utility.

    The following ADALOD utility parameter must not be changed: 

    ISNREUSE=YES

Step 8: Load the FREG System File Definition

(Job I050, Step 0104)

This step is only required if registry information must be available to control concurrent user sessions limited with the Natural profile parameter UCONMAX (see the Parameter Reference documentation).

You can skip this step if you want to use an existing Natural FREG system file.

Load the new Natural FREG system file definition:

  1. Set the System Maintenance Aid (SMA) parameter NAT-FREG to Y (Yes).

  2. Specify the database ID and file number of the Adabas file where to load the FREG system file by using the Adabas ADALOD utility.

    In addition, you must specify this database ID and file number in the Natural parameter module as described in Step 13: Build the Natural Parameter Module.

  3. Load the FREG system file definition contained in the NATvrs.SYSF data set by using the Adabas ADALOD utility.

    The following ADALOD utility parameter must not be changed: 

    ISNREUSE=YES

Step 9: Load the FDIC System File Definition

(Job I050, Step 0103)

Skip this step:

  • if you want to install Predict. In this case, use the corresponding installation step described in the Predict Installation documentation.

  • if you want to use an existing Natural FDIC system file.

Load the new Natural FDIC system file definition:

  1. Specify the database ID and file number of the Adabas file where to load the new FDIC system file definition by using the Adabas ADALOD utility.

    In addition, you must specify this database ID and file number in the Natural parameter module as described in Step 13: Build the Natural Parameter Module.

  2. Load the FDIC system file definition contained in the NATvrs.SYSF data set by using the Adabas ADALOD utility.

    The following ADALOD utility parameter must not be changed: 

    ISNREUSE=YES

Step 10: Load the FSEC System File Definition

(Job I050, Step 9900)

Skip this step, if you do not use Natural Security.

Step 11: Build the Natural Configuration Module

(Job I055, Step 0110)

This step is only required if you need to change the delivered NATCONFG module, for example, to adapt the NTDVCE macro definition to your requirements.

  1. Change and assemble the source contained in the hilev.NATvrs.SRCE data set.

  2. Link the resulting Natural configuration module NATCONFG to the environment-independent nucleus (see Step 14: Link the Nucleus).

    For more information on the configuration tables in NATCONFG, refer to Natural Configuration Tables in the Operations documentation.

Step 12: Build the Natural-Specific IBM Language Environment Options

(Job I055, Step 0120 or 0130)

Build the Natural-specific runtime options for the IBM Language Environment (LE).

Step 0120 is only required if you need to adapt the LE options at the .MVSDEF label in the delivered NATLEOPT module to your requirements.

  1. Set the System Maintenance Aid (SMA) parameter NAT-LEOPT to Y (Yes); default is N (No).

  2. Change the required LE options in the NATLEOPT source module contained in the NATvrsSRCE data set at the .MVSDEF label.

  3. Assemble and link the NATLEOPT source module contained in the NATvrsSRCE data set.

  4. Link the resulting NATLEOPT module to the environment-dependent nucleus (see Step 14: Link the Nucleus).

Step 0130 is only required if you have any non-Natural programs running in 24-bit addressing mode:

  1. Set the SMA parameter NAT-LEOPT-AMODE24 to Y (Yes); default is N (No).

  2. Assemble the NATLEOPT module contained in the NATvrsSRCE data set.

  3. Link the resulting NATLEOPT module to the environment-dependent nucleus (see Step 14: Link the Nucleus).

Step 13: Build the Natural Parameter Module

(Job I060, Steps 0010, 0015)

Build the Natural parameter module for batch mode.

  1. Modify the settings of the Natural profile parameters supplied with this job, if required. The parameters and corresponding macros (if applicable) are described in the Parameter Reference documentation. The most important parameter/macro settings are described below.

    • Configure the z/OS batch interface: Modify the settings of the parameters supplied with the NTOSP macro to meet your requirements. For descriptions of these parameters, see the corresponding dynamic profile parameter OSP.

    • Adapt the following parameters:

      FNAT=(database-id,file-number)
FUSER=(database-id,file-number)
FDIC=(database-id,file-number)

      where database-id and file-number are either the database ID and file number you specified when loading the new FNAT, FUSER and FSEC system files (see Step 5, Step 6 and Step 9, respectively), or the database ID and file number of your existing Natural system files.

      These parameters are supplied with the NTPRM macro described in the Operations documentation.

    • If you want to to limit the number of concurrent users with the Natural profile parameter UCONMAX, proceed as follows:

      Supply the following parameter with the NTPRM macro: 

      FREG=(database-id,file-number)

      where database-id and file-number are either the database ID and file number you specified when loading the new Natural FREG system file (see Step 8), or the database ID and file number of your existing Natural FREG system file.

    • If you want to use read-only system files, proceed as follows:

      Supply the following parameter with the NTPRM macro: 

      ROSY=ON

      Specify the NTLFILE macro (see the parameter LFILE): 

      NTLFILE 212,database-id,file-number

      where database-id and file-number are the database ID and file number you specified when loading the new Natural scratch-pad file (see Step 7), or the database ID and file number of your existing Natural scratch-pad file.

    • If you want to use a Natural global buffer pool, perform the following steps:

      Specify the NTBPI macro (see the BPI parameter): 

      NTBPI TYPE=NAT,NAME=gbp-name

      where gbp-name is the name of the Natural global buffer pool to be used.

      Supply the following parameter with the NTPRM macro: 

      SUBSID=subsystem-name

      where subsystem-name is the name of the Natural subsystem specified when creating the global buffer pool.

      Make sure that the System Maintenance Aid (SMA) parameter NAT-GLOBAL-BP is set to Y (Yes). This is the default setting.

      For detailed information on the Natural global buffer pool, see Natural Global Buffer Pool under z/OS in the Operations documentation.

  2. Assemble and link the Natural parameter module.

Step 14: Link the Nucleus

(Job I060, Steps 0020, 0105)

  1. If you want Natural to run in the IBM Language Environment (LE), set the System Maintenance Aid (SMA) parameter NAT-LE to Y (Yes). The default setting is N (No).

  2. Link the environment-dependent nucleus (Step 0020) for batch Natural.

    The list of modules to be linked for the environment-dependent nucleus is supplied with Step 0020.

    Do not link the environment-dependent nucleus with the linkage editor option RENT.

  3. Link the environment-independent nucleus (Step 0105).

    The list of modules to be linked for the environment-independent nucleus is supplied with Step 0105.

    Ensure that the Natural profile parameter NUCNAME (see the Parameter Reference documentation) specified in the Natural parameter module contains the name of the module resulting from this link step.

Step 15: Load New Natural Objects and Natural Error Messages

(Job I061, Step 0100)

  • Load the Natural objects and Natural error messages from the NATvrs.INPL data set into the Natural system files by using the Natural INPL utility.

    The Natural error messages comprise short and long message texts and the German (ULANG=2) short message texts. You can use the ERRUPPER program of the Natural SYSERR utility to convert the message texts to upper case.

    For details on the ULANG profile parameter and ERRUPPER, see the Parameter Reference and the Utilities documentation, respectively.

Step 16: Load the Japanese Messages

(Job I061, Step 8300, 8302)

This step is optional and only required if you want to replace the English long message texts by their Japanese equivalents or if you want to load the Japanese short message texts. The Japanese message texts are contained in the Natural Japanese Language Pack (product code NCJ), a separate product that can be loaded optionally. If you do not load the Japanese message texts, the English message texts are used instead.

  1. Replace the English long message texts (Step 8300) by loading the Japanese long message texts from the NCJvrs.INPL data set into the Natural system file with the Natural INPL utility.

  2. Load the Japanese (ULANG=59) short message texts (Step 8302) from the NCJvrs.ERRN data set into the Natural system file by using the ERRLODUS program of the Natural SYSERR utility (described in the Utilities documentation).

    For details on the ULANG profile parameter and ERRLODUS, see the Parameter Reference and the Utilities documentation, respectively.

Step 17: Load the Natural Example Objects

(Job I061, Step 0103)

  • Load the Natural example objects from the NATvrs.EXPL data set into the Natural system file by using the Natural INPL utility.

Step 18: Create and Format the Roll File

(Job I200, Step 0101)

This step is only required if you want to use the Natural Roll Server. For information on the different types of roll files, see Roll File and LRB in the Operations documentation, and Natural under CICS and Natural under IMS TM in the TP Monitor Interfaces documentation.

  • If you use the roll file of a previous version, it is sufficient to execute the NATRSRFI RESET function. See Formatting the Roll File in the Operations documentation.

  • If you use a new roll file, create and start the job FORMRF1 (supplied with Step 0101) before using Natural.

Step 19: Create and Start the Natural Roll Server

(Job I200, Step 0102)

This step is only required if you want to use the Natural Roll Server described in Natural Roll Server Operation in the Operations documentation.

  • Create and start the job SAGRSM (supplied with Step 0102) before using Natural. See Starting the Roll Server in the Operations documentation.

    Depending on the setting of the SMA parameter NATRSM83, either NATRSM82 (NATRSM83=NO) or NATRSM83 (NATRSM83=YES) is used to start the Roll Server.

Step 20: Create and Start the Natural Authorized Services Manager

(Job I200, Step 0103)

This step is only required if you want to use the Natural Authorized Services Manager (ASM) described in Authorized Services Manager under z/OS in the Operations documentation.

  • Create and start the job SAGASM before using Natural.

Step 21: Create and Start the Optimize Monitor Buffer Pool

(Job I200, Step 0105)

This step is only required if you want to use the Optimize Monitor Buffer Pool described in Optimize Monitor Buffer Pool in the Operations documentation.

Step 22: Create and Start the Message Buffer Pool

(Job I200, Step 0107)

This step is only required if you want to use a message buffer pool described in Message Buffer Pool in the Operations documentation.

Step 23: Create Sample JCL for the Natural RPC Server

(Job I200, Steps 0109, 0115, 0120)

These steps are only required if you want to use Natural RPC.

Sample Natural RPC server:

  1. Set the parameters in the System Maintenance Aid (SMA) group RPC accordingly; in particular, set the parameter NAT-RPC to Y (Yes).

    For further information, see Starting a Natural RPC Server and Starting a Batch Server in a Mainframe Environment in the Natural RPC (Remote Procedure Call) documentation.

  2. Create the CMPRMIN sample input to execute a Natural RPC server in batch mode (Step 0109).

  3. Create the sample JCL to execute a standard Natural RPC server task without RPC server front-end (Step 0115).

  4. Create the sample JCL to execute a Natural RPC server task by the RPC server front-end (Step 0120). This JCL is necessary for impersonation.

Installation Verification

This section provides instructions for verifying the successful installation of Natural.

Test Batch Natural

You can use the following sample JCL to invoke Natural in batch mode and check whether the Natural system files are available: 

//JOBNAME JOB (,,,999),CLASS=K,MSGCLASS=X,MSGLEVEL=(1,1)
//*
//NATBAT   EXEC PGM=NATvrsBA,COND=(0,LT)
//STEPLIB   DD DSN=NATURAL.BATCH.LIBRARY,DISP=SHR
//          DD DSN=ADAvrs.LOAD,DISP=SHR
//DDCARD    DD * 
ADARUN DB=001,DE=3390,SVC=249,MODE=MULTI
//CMPRINT   DD SYSOUT=X
//CMPRT01   DD SYSOUT=X
//CMWKF01   DD DUMMY
//SYSOUT    DD DUMMY
//CMSYNIN    * 
EDIT         
WRITE 'TESTBAT'
END          
.E           
RUN 
SAVE TESTBAT 
FIN          
//

This job starts Natural, creates the example program TESTBAT, and executes the program with the system command RUN.

Test Online Natural

You can use the following verification procedure to test Natural system functions in online mode and check whether the Natural system files are available.

  1. Log on to the Natural user library SYSTEM: 

    LOGON SYSTEM

  2. Enter the following Natural system command:

    MAINMENU

  3. Select Development Functions and enter the following:

    C in the Code field,
    P in the Type field, and
    TEST in the Name field.

  4. In the editing area of the program editor, type the following:

    WRITE 'HELLO'
END

  5. Save the source code and exit the program editor.

  6. In the Development Functions menu, enter the following:

    L in the Code field and
    TES* in the Name field.

  7. On the LIST Objects in a Library screen, enter the RU line command for the TEST program.

  8. Enter the following Natural system command:

    SYSDDM

  9. In the SYSDDM utility menu, enter the following:

    R in the Code field and
    EMPLOYEES in the DDM Name field.

  10. After pressing ENTER, enter the following:

    C in the Code field,
    the appropriate Natural system file number in the FNR field,
    the appropriate database ID in the DBID field, and
    Y in the Replace field.

    The specified DDM has been adapted to your environment.

  11. Repeat Steps 9 and 10 for the VEHICLES DDM.

  12. You can check whether the DDMs EMPLOYEES and VEHICLES are now available in your environment by logging on to the Natural system library SYSEXSYN and executing the example programs (for example, AEDEX1R) with the system command RUN.