JAVA VIRTUAL MACHINE

It is a platform specific software provided by sun Microsystems. It consists of java run time environment to interpret the JAVA programs.

a) When JAVA programs are defined they used to save extension .JAVA (eg bank.java) it is compiled into bank.class file. This class file will be distributed to the customers irrespective of the operating system

Authenticate - login

Authorized - Executing tasks

These files are interpreted by using JAVA Virtual Machine. JVM contains Byte code verifier and class loader. Initially JVM checks the class files and verify the bytes in the code and then signals to load the class file to display the screens/ Logic executed. This is the reason why JRE is required to execute JAVA Program.

(Platform specific JVM should be installed on the customers system) b) It is used to configure various managers and services.

c) It is used to store the Administrator password using option secure store.

d) It is used to configure the user management to LDAP engine ie, users who are created in AD (Active Directory) server.

LDAP protocol is used to transfer the users from AD to the Application platform. (ABAP/ JAVA)

e) Offline configuration mode to change certain parameters eg: when all the users are locked, this option is used to enable SAP* user. when SAP* is enable no other user can work on the system. Unlock the admin users and disable SAP* (two restarts are required)

f) It works only on the database as it needs to connect to the database using the OS authentication (doesn't require any userid and password)

This is an admin tool which is used to change the static and dynamic parameters (Except JVM)

It is initialized by using go.bat /.sh in UNIX which resides in j2ee\admin

It works only online because it needs to connect to J2ee engine. It needs admin user , password, hostname and port p4 (50004).

It can connect from any system using the above credentials.

It is used to configure various services and managers. It can also used to start/stop various services and applications. It is discontinued in 7.10 NW but widely used in 640/ 700.

14-Jul-09 6. Shell Console Tool (or) Telnet tool

It is used to login to the system remotely when the system is congested (Hourglass mode). From Command prompt

telnet <Ipaddress/Hostname> <port number> telnet willsys11 50008

Provide the login details as J2EE_ADMIN and the password Prompt changes to >

> lsc (list services) > man (gives the manual)

In Netweaver 7.1 SAP provides Shell Console Tool in the J2ee Directory and up to Netweaver 7.0 telnet tool has to be executed manually from the command prompt.

\usr\sap\<sid>\DVEBMSG\shellconsole from 7.1 only 7. JCMON or JControl Monitor

It is initialized by using command line executable jcmon suffix with Jcmon pf ="path of the instance profile"

Eg: D:\usr\sap>jcmon pf=d:\usr\sap\<sid>\sys\profile\wis_dvebmgs_hostname

It provides the menu to administer cluster, memory and restart the processes if required. Command=> 0 to Exit

Command=> 30 to refresh the instance data (It is used to clear the shared memory in use) 12 - To identify the processes

5 - This is used to monitor the status of the instance 8. JSPM - JAVA Support Patch/ Pack Manager tool

It is introduced in Netweaver 7.0 to replace SDM tool. SDM is not available in NW 7.1 It reads the support packages, patches from \usr\sap\trans\eps\in

Similar to SPAM but it works on SDM port and password. It is only executed in the <SID>ADM home. (The environment required for JSPM is provided by user <SID>ADM.

It is initialized by go.bat which is available in JSPM directory. JSPM has its own patch level similar to SPAM which is updated by JSPM.

JSPM is used to deploy business packages like employee self service, manager self service, new software components & additional usage types. It is also used to control the transport of objects between systems in the landscape.

The main advantage of JSPM is undeployment is not possible, consistency between support packages are checked and displays the source and target patch levels. The another major advantage is the patches can be deployed arbitrarily like 1 to 5 (i.e missing the sequence).

It is also used to upgrade kernel where the system will be restarted as per the requirement (NW Consultant should take the backup of the kernel)

Process:

Download the respective software into EPS\In directory (.sca, .sda, .sar etc) and place them in EPS\In

Ensure that the logged in user is <SID>ADM. Initialize JSPM by using go.bat

Specify the SDM Password (SDM and JSPM should not be operated simultaneously to avoid inconsistency of the system).

Select the type of the package to apply Eg: Single Support package

JSPM reads the EPS\In directory and displays if a valid support pack is available. Specify the patches target level (Select or Skip)

Support Packs NW - 18 EHP1 SOL - EHP1 ERP - EHP4

Note: Among the selected packages SAP Identifies which one be prioritized first in this case JSPM goes first.

Select the target SP level can click on next to deploy the patches.

JSPM maintains its own log files if any dependencies are missing it will abort the deployment. 9. USER Admin Tool

It is used to administer the users, groups and roles. User admin is a part of NW Identity Management tool.

UME - For user management PORTAL - for Portal engine J2ee - For J2ee Engine ABAP - roles

Note: ABAP roles are groups in JAVA Engine.

Standalone JAVA engine has various options lie user creation and password management in the user admin tool but whereas in the integrated engine the user management is taken over by ABAP Engine except assigning J2EE roles.

10. NWA Tool (NETWEAVER Admin Tool)

It is available since NW7.0 and used for JAVA engine, administration, configuration and monitoring. It is used to perform the post installation activities based on the usage types. Also used to start/stop various services, process and applications. From NW7.10 all the visual admin tool tasks are performed by NWA Tool. It provides reports related to users, memory, performance, components etc similar to ST03.

11. SLD Tool (System Landscape Directory) http://<hostname>:50000/sid

It is a landscape information provider service to provide the information of all the systems in the landscape along with products, software components, patch levels, clients information etc. (000,001, 066)