The ping test (OS01 - Specific IP address) use the program RSHOST14 to perform the test

triks

Transactions, Reports and Function Module:

- To ping a remote IP addres = OS01. Report RSHOST14

- Perform commands in the OS level = report RSBDCOS0

- See the work process trace file = SM50 and w

- Check the last trace file changed = ST11

- Change the application server = SM51 and twice in the appl

- Send message for an user logged = Function Module TH_POPUP

R3:

- Ctrl & + = open a new session

- Ctrl Shift F8 = go to command bar

-

SAPMSSY8

AutoAbap dispatcher program SAPMSSY8 should be started every 300 seconds.
Parameters: rdisp/autoabaptime
SAP not recomend to change this value.

availability monitoring

Local autoreaction depends on the method dispatcher (sapmssy8), therefore you have a delay up to 300 seconds.

The only workaround for this (based on ccmsping availability) would be to use two systems:

the first one is responsible for the availabilty monitoring, the second one would monitor the first system for the Availability MTEs. In this case it would be possible to use a central autoreaction method for the Availability MTEs: the alert occurs in the first system, will be forwarded to the second system by sapccm4x which triggers the central autoreaction in the second system.

semaphore

semaphore 43 in SPOOL workprocess

The spool uses semaphore 43 on every application server to synchronize
accesses on shared use data structures in the shared memory. If a work
process is blocked during a spool action for which it set SEM43, other
processes gradually encounter these semaphores and wait.

#661487 Spool: Analyzing problems with semaphore 43

Web Dispatcher / ICM

NOTES
552286 Troubleshooting for the SAP Web Dispatcher
634262 Note on the preclarification of SAP Web dispatcher messages


DONWLOAD
http://service.sap.com/swdc
-> Download
-> Support Packages and Patches
-> Entry by Application Group
-> Additional Components
-> SAP Kernel
-> SAP KERNEL **-BIT
-> SAP KERNEL **-BIT
-> SAP KERNEL **-BIT
->
-> #Database independent
-> sapwebdisp.SAR

SERVICE WINDOWS

Try create a service with SC tool:
sc create SAPWebDisp binpath= " service pf=" type= own start= auto

ADMIN MANAGEMENT

You can create a separated port to connect in the web dispatcher admin
You should create a net port to webdispatcher listen:
icm/server_port_1 = PROT=HTTP,PORT=8999

and redirect the admin to this port:
icm/HTTP/admin_0 = PREFIX=/sap/admin,DOCROOT=./admin,PORT=8999

ICMAUTH

How to create/delete/edit users in the icmauth authentication for webdispatcher?
wdispmon -a


KNOW ERRORS/ISSUES

**************************************
*** ERROR => PlugInHandleNetData: server: premature EOS (0/620) in request [http_plg_mt. 1801]
**************************************
-----------------------------------------------------------------------------
The PlugInHandleNetData is a function wich analyses the input stream
from the network. This error you get means that some error occured
during receiving the data stream from the server above.
There is generally nothing to worry about, this can be caused by a
temporary network error or some synchronization fault.
-----------------------------------------------------------------------------
This message "PlugInHandleNetData" appears in the icm trace when you are
executing stateful applications and the user session (in SM04) is
already deleted. This session is deleted after the timeout in
rdisp/plugin_auto_logout. After this time the user session in SM04 will
be deleted. This parameter is only used for stateful sessions.
-----------------------------------------------------------------------------


**************************************
*** ERROR => htmlEncode: called with empty string
**************************************
"This is a bug of web dispatcher and was solved on patch level 11
So, please apply the kernel patch level 115 and check whether it
helps you."

851852 - ICM Patch Collection (7.00)

**************************************
*** ERROR => PlugInHandleServData: header not terminated
**************************************

The response from the server does not contain a terminated HTTP header.

sapsrtarsrv

The sapstartsrv is a tool to organize the satart an stop process.

936273 sapstartsrv for all platforms
995116 Backward porting of sapstartsrv for earlier release

This is a service for the administration of a SAP instance. Ideally, the service start and stop the SAP in the correct sequence.

897933 Start and stop sequence for SAP system

To increase the sapstartsrv trace set the parameter:

service/trace = 1