SAP Web dispatcher Installation – Windows and Unix

HOW TO SAP - SAP Web dispatcher Installation

  1. Login with adm.                                                                                                                           
  2. Create folder SAPWEBDISP in usr\sap\

     
  3. Download latest web dispatcher from services.sap.com and save it to above folder
  4. To extract the file > Start > Run > Cmd > Browse to SAPWEBDISP folder
  5. Execute sapcar –xvf sapdispatcher.sar

  6. Create a profile by executing: sapwebdisp.exe –bootstrap
  7. You will be prompted for some details.
  8. Hostname: 
  9. http_port : 8100 <-- this might differ, 00 is the instance having a messager server


  10. Unique Instance number: 88 (any number)
  11. Http port number for SAP Web Dispatcher: 80 <-- default port for landing page
  12. Create configuration for : medium (default)
  13. Once complete, browse to SAPWEBDISP folder and edit sapwebdisp.pfl
  14. #SAP Web Dispatcher Ports
    icm/server_port_0 = PROT=HTTP,PORT=80,TIMEOUT=180, PROCTIMEOUT=3600
  15. # SAP Web Dispatcher Web Administration
    icm/HTTP/admin_0 = PREFIX=/sap/wdisp/admin,DOCROOT=./admin,AUTHFILE=icmauth.txticm/HTTP/redirect_0 = PREFIX=/, TO=/sap/bc/gui/sap/its/webgui/!
  16. Manually create a window service to run web dispatcher.
  17. Start > Run > Cmd > ntscmgr install "SAPWebDisp PRD” -b


  18. Start > Run > Regedit >
  19. HLKM > SYSTEM > CurrentControlSet > services > SAPWebDisp PRD > ImagePath >
  20. Enter:
    F:\usr\sap\\SAPWEBDISP\sapwebdisp.exe service pf=F:\usr\sap\\SAPWEBDISP\sapwebdisp.pfl
    (remember to check your drive and sid)
  21. Exit regedit
  22. Right click on My Computer > Manager > Services >
  23. Restart SAPWebDisp PRD service

SAP Web dispatcher Installation- Unix

  1. Read SAP Note 538405
  2. Read SAP Help:http://help.sap.com/saphelp_nw70/helpdata/en/b4/9aa8862e714e6db8e74e48e5d3283b/frameset.htm
  3. Download the webdispatcher from http://service.sap.com/ ->Support Packages and Patches-> Entry by Application Group-> Additional Components-> SAP Kernel-> SAP Kernel 32 Bit or SAP Kernel 64 Bit-> SAP Kernel 7.01 -> Operating system platform-> Database independent ->The package is called sapwebdisp_<>-<…>.SAR, where <> indicates the patch level
  4. Create a direactory /usr/sap/SID/webdisp on server and copy the downloaded webdispatcher sapwebdisp_35-10006297.sar
  5. Uncar the downloaded file
  6. /usr/sap/SID/SYS/exe/run/SAPCAR -xvf sapwebdisp_35-10006297.sar
  7. chown SIDadm:sapsys *
  9. Run this commnad to install webdispatcher: sapwebdisp.pfl -cleanup -shm_attach_mode 4 -auto_restart -bootstrap
  10. Installation process provide the values to below parameters:
  11. Hostname of Message Server (rdisp/mshost):messageserver hostname
  12. HTTP Port of Message Server (ms/http_port): 81Instance_Number
  13. Unique Instance Number for SAP Web Dispatcher (SAPSYSTEM): Give a unique name
  14. HTTP port number for SAP Web Dispatcher: 280_Instance_Number
  15. Create configuration for s(mall), m(edium), l(arge) system (default: medium): l
  16. At the end you will see this message, SAP Web Dispatcher bootstrap ended (rc=0), ð *** SAP Web Dispatcher up and operational (pid: 12956) ***
  17. Then start the webdispatcher: sapwebdisp pf=sapwebdisp.pfl -checkconfig
  18. Make sure the dispatcher started :
  19. ps -ef grep webdisp
  20. SIDadm 14561 11954 0 16:32:13 pts/2 0:00 grep sapwebdisp
  21. SIDadm 12956 1 0 16:26:29 pts/1 0:01 sapwebdisp pf=sapwebdisp.pfl -shm_attach_mode 6
URL redirect concept –
For redirect (when your client browser will be asked to go to a new URL), below should do, though it is better to use FQDN, like sapwebdisp.corp.com
icm/HTTP/redirect_0 = PREFIX=/ECC/webgui, FOR=sapwebdisp:85, FROM=*,TO=/sap/bc/gui/sap/its/webgui,HOST=saperpecc,PROT=HTTP,PORT=8001
If you want your client to see http://sapwebdisp:85 URL in the browser, but actual content of http://saperpecc:8001//sap/bc/gui/sap/its/webgui, this would be URL forwarding/routing.
In this case you need to use parameter 
wdisp/server_info_location = info.icr to point to ecc host and also icm/HTTP/redirect_0 to manipulate prefixes ECC/webgui -> sap/bc/gui/sap/its/webgui/ .
We could also use httpurlloc table in ECC instead of info.icr file.
Example of icr file could be:
Version 1.0 ECC J2EE saperpecc 8001 DIA=1
Only hostname and port are critical, since we are not doing load balancing on this web dispatcher.

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