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SAP Master Data Management (SAP MDM) enables information integrity across the business network, in a heterogeneous IT landscape. SAP MDM enables the sharing of harmonized master data, formerly trapped in multiple systems, and ensures cross system data consistency.
In this article by Uday Rao, author of SAP NetWeaver MDM 7-1 Administrators Guide, we cover:
- Mount and unmount an MDM server
- Start and stop an MDM server
(For more resources on SAP, see here.)
Accessing an MDM server involves mounting and unmounting operations which we discuss in the following section.
Mounting and unmounting an MDM server
MDM server installations are accessible on the console only after they have been mounted. Multiple servers can be mounted within a single console session. We have a choice of mounting only those servers which need to be accessed. The server may or may not be in a running state when mounted in your console session. No password is required to mount a server in your console session even if it is password protected.
The MDM Console provides the option of saving the list of currently mounted servers to an MDM Console Settings file. We can load this settings file in the console session and automatically get the previously saved server(s) list mounted as a group.
An MDM server can be mounted by multiple MDM Consoles. Once an MDM server is started from any console, it runs on the machine where it is installed and is seen as running by all MDM Consoles that have mounted it.
We can mount an MDM server as follows:
- Right-click on the root node (SAP MDM Servers) in the hierarchy pane tree and choose Mount MDM Server… from the context menu:
- Alternatively you many select the root node (SAP MDM Servers) and choose MDM Servers | Mount MDM Server… from the main menu:
- MDM opens the Mount MDM Server dialog prompting for the MDM Server input as displayed next:
- In the drop-down list input the region displaying the text Enter or select an MDM Server, type the name of the MDM server (typically the name of the machine on which the server is running) you want mounted or select it from the drop-down list. Alternatively (for non-Windows installations), type the name or IP address of any remote machine into the edit box in the Mount MDM Server dialog.
- Click on the OK button:
The drop-down list of MDM Servers shows only those servers that you have previously mounted. If a specific server is not in the list, click on … (Browse) button to open the Select MDM Server dialog (see next) and select the machine on which the MDM Server has been installed from the list of Windows machines visible on the local network.
On successful mounting of the MDM server, you will see a new server node added in the tree structure of the hierarchy pane. Depending on the state of the MDM server, the corresponding icon is displayed in the tree node. The different states and the respective icons of the server node are listed in the following table:
State of MDM server
MDM server is stopped
MDM server is running
MDM server is in one of the following states*:
If the MDM server is inaccessible via the console even after the server has been started, you can try unmounting and remounting the MDM server in the console to restore connectivity.
Next we see how to unmount an already mounted MDM server:
- In the hierarchy tree, right-click on the MDM server that you want to unmount and choose Unmount MDM Server from the context menu. Alternatively, you may unmount the server by first selecting its node in the tree and then clicking on MDM Servers | Unmount MDM Server from the main menu.
Unmounting an MDM server is also possible by using the MDM Servers pane (top-right) when the root node (SAP MDM Servers) is selected in the hierarchy tree. Then you can right-click on the MDM Server in the objects pane and select Unmount MDM Server from the context menu.
- The MDM server node disappears from the tree in the hierarchy pane.
Unmounting a running MDM server while it is still running keeps the MDM repositories mounted and loaded even while the unmounted server remains disconnected from the console session. Unmounting and again re-mounting an MDM server within the same MDM Console session requires the MDM server's password to be re-entered to perform any server-level operations (like starting and stopping the server).
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(For more resources on SAP, see here.)
Starting and stopping an MDM server
Along with the MDM Server, other auxiliary servers like MDM Import Server, MDM Syndication Server, and MDM Layout Server can be started and stopped using the MDM Console tool. However, starting and stopping the servers requires an OS user and password to be entered in the Web Service Authentication dialog box.
An MDM server in stopped state (red square) can be started by using the following steps:
- Right-click on the stopped MDM server in the hierarchy pane and select Start MDM Server from the context menu. Alternatively, the server can also be started by selecting MDM Servers | Start MDM Server from the main menu.
Starting a stopped MDM server is also possible by using the MDM Servers pane (top-right) when the root node (SAP MDM Servers) is selected in the hierarchy tree. You can simply right-click on the MDM server having the status Stopped> in the objects pane and select Start MDM Server from the context menu.
- The console application prompts you to enter the OS level User and Password in the Web Service Authentication dialog box:
- Enter the credentials and click on OK.
- The state of the MDM server changes to running with the server status icon changing from a red square to a green triangle (as shown):
When starting an MDM server, a check is performed on each of its mounted repositories. This requires the underlying DBMS server to be up and running.
You can stop an MDM server when it is in running state (green triangle) as follows:
- Stop the MDM server from the context menu by right-clicking on the server node in the hierarchy pane. Then click on the Stop MDM Server option in the context menu displayed:
- Alternatively, you may also stop the currently selected MDM server by choosing MDM Servers | Stop MDM Server from the main menu:
Stopping a running MDM server is also possible by using the MDM Servers pane (top-right) when the root node (SAP MDM Servers) is selected in the hierarchy tree. You can simply right-click on the MDM server having the status Started in the objects pane and select Stop MDM Server from the context menu.
- A pop-up SAP Instance Shutdown dialog box appears prompting for the type of shutdown. Select the shutdown type from the following choices:
- Hard (SIGINT)
- Soft with timeout (SIGQUIT/SIGINT)
- Soft without timeout (SIGQUIT)
- If you have selected Soft with timeout as the shutdown type then also provide the timeout period in seconds in the input textbox.
- Click on the OK button.
- MDM prompts you to enter the OS user name and password in the Web Service Authentication pop-up dialog box:
- After entering the credentials click on OK.
- The server status icon changes from the green triangle to a red square (as shown) indicating that the server is now stopped:
You can start or stop the auxiliary servers using the following steps:
- Mount the auxiliary server by right-clicking on the node in the console hierarchy Auxiliary Servers:
- Select the desired auxiliary server from the context menu option Mount.
- In the dialog box, select the auxiliary server from the drop-down menu:
- A new server node is appended below the Auxiliary Servers node:
- To start the auxiliary server (for example, Import Server), right-click on it and select the context menu option Start Auxiliary Server:
Similarly, you can stop the auxiliary server by selecting the context menu option Stop Auxiliary Server. A pop-up SAP Instance Shutdown dialog box appears prompting for the type of shutdown. This is the same pop-up that appears while stopping the MDM server as discussed previously.
In this article, we have seen the operations for accessing the MDM server . In the beginning, we saw how to mount and unmount the MDM server in a step-by-step manner. Then we moved on to starting and stopping the MDM server.
- SAP NetWeaver: MDM Scenarios and Fundamentals [Article]
- Working with User Defined Values in SAP Business One [Article]
- Exporting SAP BusinessObjects Dashboards into Different Environments [Article]
- SAP BusinessObjects: Customizing the Dashboard [Article]
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About the Author :
Uday Rao is an engineering graduate with a Bachelors of Engineering degree in Information Technology. He started his career as a Java programmer and soon started writing Enterprise Java Beans for the SAP MDM Enrichment Adapter.
He is a certified SAP NetWeaver MDM 5.5 technology consultant with over 3 years of work experience in the IT industry including over 2 years work experience on SAP NetWeaver MDM. Apart from the MDM core implementations he has also worked on creating SAP NetWeaver MDM enrichment adapters, incorporating MDM Java APIs, MDM ABAP APIs, developing SAP WebDynpro Java applications and SAP MDM Portal integration.
His experience on other SAP technologies include: working on SAP WebDynpro ABAP, creating and testing SAP ABAP programs for various support and development projects. He has also published SAP SDN community network blog on the SAP MDM Enrichment Adapter titled "SAP MDM Enrichment Adapter - more than just enrichment".