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Author's profile photo A Prasad Rao
A Prasad Rao
January 5, 2020 2 minute read

SAP Convergent Charging Best Practise -2

Issue:

Confusion regarding the instance numbers mentioned in SWPM tool and instance numbers displayed

at OS level. During the SAP Convergent Installation using SWPM tool, when you see the screen as

shown below, some confusion arises regarding instance number .

The value should be always 1 (by default) (as shown in the above highlighted in Yellow color).

DO not change the default value.

It just notifies the installer on how many instances of the particular component will be installed in the

particular system.

For Ex: A system with 3 dispatchers, 3 Guiders, 2 updaters, 6 bulk loaders and raters will have it in

the increasing order, specifying the installer that it is first/second/third … instance of the particular

component dispatcher or Guider or Updater …..

Below is the 3rd instance of Dispatcher being installed with the 1st and 2nd dispatcher instances

already completed.

These numbers are very important because they in turn define the HTTP port, web services port,

message port and internal message ports accordingly(as you can see they are default+2 for the third

instance)

 

 

 

How to determine the instance number for each component (depends on single host or

distributed hosts) in order that you need to execute sapcontrol command for stopping / starting instance.

At OS level:

Login to various SAP CC hosts (distributed hosts) or single SAP CC host (Single host) using putty

cd /usr/sap/<SID>

Example for Distributed host

As shown above, instances name CCR00 and CCB01  for  Rater and Bulk Loader respectively  reside on a separate host.

Therefore Instance number for Rater is 00 and for Bulk Loader is 01 .

The other instance name for Dispatcher, Guider and Updater resides in separate hosts will have different instance number.

CCD, CCU,CCR,CCB and CCG – are instance name

CCDxx, CCUxx, CCBxx and CCGxx where xx is the instance number CC means = Convergent Charging

D= Dispatcher U=Updater R=Rater G=Guider B= Bulk Loader

Example for Single Host installation 

As shown in the above figure, all the components of Convergent Charging reside on single host.

Hence five instances installed with increasing instance numbers (00, 01, 02, 03 and 04).

(This is not recommended for Production system otherwise performance  will be extremely slow )

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      Author's profile photo Praveen K R
      Praveen K R

      Hi Prasadh,

      Issue

      We have a situation here, we are installing SAP CC 5.6 on a single host, with single dispatcher, updater,guider,rater and buk uploader.

      But during installation it is taking instance number of already existing systems and making the system unavailable.

      Eg. – A15 – (00,01), B15(02,03), C15(04,05) – were already running system in that host

      SAP CC 5.6 – X15(CCD00, CCU01, CCG02, CCR03, CCB04) – when installation completes it brings A15, B15 and C15  SAP servers which were already running.

       

      Any idea why it is taking the instance number of the SAP systems that is already running in the server ?

      Do we option to change it any where in sapinst used for this installation ?

      Hint was when running the sapinst it was deducting the previously running systems on that host but during instance selection it did not show the existing instance available.

       

      issue

      issue