When the site www.xyz.com is added, the ASSOCIATED COMPONENTS list box in this page will list the aforesaid components. To disassociate any of the components, for instance, the application server, just select it from the ASSOCIATED COMPONENTS list box and click the Disassociate >> button. Then, click the Update button. This, in effect, will not only disassociate the application server, but also the database server it uses.  

Note:

If a segment component is disassociated using the Disassociate button in this page, then all dependent components of the disassociated component (i.e., components with a Uses relationship with the disassociated component) will also be removed from the service.

A preview of the service topology that is being configured will be available in the SERVICE TOPOLOGY PREVIEW section at the bottom of this page.

If you want to focus on the links emerging from or leading to a particular component/group in the topology, all you need to do is to move your mouse pointer over that component/group in the SERVICE TOPOLOGY PREVIEW. The type and IP:Port of the component in focus will then be displayed in the Highlighted Component box at the bottom of the SERVICE TOPOLOGY PREVIEW section, and the relationships specific to the component will be highlighted in the preview. Likewise, moving your mouse pointer over a group in the preview will naturally reveal the group name in the Highlighted Component box, and also the relationship the group shares with other elements in the topology. Moreover, in order to help you view and analyze the configured topology better, the SERVICE TOPOLOGY PREVIEW section provides a special toolbar comprising of a wide variety of viewing options. This toolbar is also available while previewing the segment/service topology in the eG monitor interface.

Note:

The special toolbar will be available only if your browser supports the Java plugin Sun JRE 1.3.x and above. In case of browsers that do not support this plugin, the toolbar options are still available, but in the form of a shortcut menu that appears upon right-clicking anywhere in the SERVICE TOPOLOGY PREVIEW section.

Each of the options provided by this toolbar is discussed in great detail, below:

• The Zoom In option enables you to magnify the segment preview and view it more clearly. By default, the preview is of size 8. Using the Zoom In option you can magnify the preview, progressively, to a maximum of 10. When you click on the Zoom In tool on the toolbar, the mouse pointer changes to resemble a ‘magnifying glass’ with a ‘+’ sign within. Then, use the ‘magnifying glass’ pointer to click anywhere on the preview, so that it enlarges by one size - i.e., if you click once on the ‘default&rquo; view using the 'magnifying glass' pointer, then the segment preview magnifies to size 9 from the default size 8. Another click ensures that the preview is magnified to size 10.

• The Zoom Out option condenses the segment preview, and is especially useful while viewing large, unwieldy segment topologies. When the Zoom Out tool is clicked, the mouse pointer changes to resemble a ‘magnifying glass’ with a ‘minus’ sign within. Every subsequent click on the preview reduces the preview by one size. For example, if, after choosing the Zoom Out option, you click on the ‘default’ preview (of size 8), the preview size will reduce to 7. This way, you can keep reducing the preview size until you arrive at a view that you are most comfortable with. However, you can reduce the preview size only to a maximum of size 1.

• Instead of gradually increasing the size of the preview, you can instantly switch to size 10 (which is the maximum size to which a preview can be enlarged), with the help of the Total Zoom In tool.

• Using the Total Zoom Out option, you can, in a single mouse click, reduce the preview size to the maximum possible extent (i.e., to size 1). This tool comes in handy while monitoring a very large segment topology using the eG monitor interface. In a vast topology representation, you will have to scroll from left to right or from the top to bottom, just to view the complete topology. Naturally, even simple tasks such as identifying the number of affected components in the segment and the problem type, will take time. By totally zooming out such a topology, administrators can view the complete topology at a single glance, and quickly zero-in on the number of problem components in the segment and the type of problems (whether critical/major/minor) faced by them.

Note:

You need not always use the scroll bars for scrolling right / up the preview. Instead, click on any of the white spaces within the preview, and drag your mouse up, down, right, or left to scroll.

• The Fit to Width tool is tailored for viewing large topology representations requiring incessant left to right scrolling. Clicking on the Fit to Width tool reduces the size of the segment preview to such an extent that almost all associations to the right of the topology are available in a single page itself or within a minimum number of scrollings. This way the tool saves the time and trouble involved in scrolling right for a better view of the topology.

• Large topologies comprising of many top-bottom relationships can be condensed to appear in a single view using the Fit to Height tool. If you click on the Fit to Height option now, you will find that the preview resizes and the components that were hidden previously appear in a single view (see Figure 3.107) or within a minimum number of scroll downs. This saves the time and effort involved in continuous scroll downs.

• To considerably cut down / completely do away with scrolling (right and down), you can use the Fit to Screen option. This option, when clicked, reduces the preview size and ensures that the entire topology, no matter how big, is available in a single view or within a minimum number of scrollings.

• Use the Default tool to restore the segment preview to its default size (i.e., size 8)

• To undo the previous tool selection and restore the ‘arrow’ mouse pointer, use the Normal tool. This is particularly useful while viewing the segment topology in the eG monitor interface. If the topology reveals one/more problem components, then you might want to click on one of the components to perform the next level of diagnosis. This is not possible in the Zoom In or Zoom Out modes as the arrow pointer replaced by the ‘magnifying glass’ pointer in these cases. Therefore, while in these modes, click on the Normal tool to restore the arrow pointer, and then proceed to click on a component in the topology.

• Sometimes, while zooming in/out or while scrolling, the preview could get repainted, skewing a few images. In order to restore the preview to normalcy, use the Refresh button.

The feedback provided by the service topology preview can be used by the administrator to refine the topology specification.