Developers must not work on PRD system.

Referring SAP Documentation

"Also, taking into consideration security factors (and perhaps performance aspects, if the developers have to debug programs), developers must not work on production system."

DB2 License Issue

In DB2 , the SAP OEM license has to be applied after 90 days. If you don't apply then the database won't start. The procedure is different from Oracle as you need to log into the DB2 CLP to apply the license. Please find below the procedure:

1. Login as db2sol
2.Go to Start -> All Programs ->IBM DB2 -> SAPDB2SOL -> Command Line Tools -> Command Window
3. Now apply license here as per SAP Note 816773.Even with db2cmd we were not getting the actual license status.
Actually we raised OSS and logged it on SDN as well. For the same we also opened WTS connection. For more information, please refer the below SDN link:
https://forums.sdn.sap.com/thread.jspa?messageID=8124383&#8124383

Total number of SAP transaction per day

There was a requirement from customer, if there is any way we can find out what is the total number of SAP transactions in any module in SAP. I raised the OSS, pl find below the reply:
Question :
"Is it possible to get the number of transacions done in SAP Finance per day?
We want to know how many transactions relating to FI are done in a day. "

Answer:
"There is no standard program that could record the transactions done during a day in any module."
-SAP Active Global Support

SSCR Registration : Check Advance Correction in case of SAP Notes

If you are registering SSCR keys for SAP Standard object mentioned in SAP Note then check Advance Correction checkbox, as it will tell SAP that this is due to SAP Note only, otherwise SAP warranty is invalidated.

Remote support SAPOSS - Connection Type WTS

There is more popular procedure known as R/3 support wherein the SAP support remotely connects to the customer throught SAPGUI but if the SAP server is down then WTS (Windows Terminal Server) connections needs to be opened.
How to :
SAP Note : 605795

Points to remember :
1. Please maintain the following line in the SAProuttab:
KP "p:CN=sapserv2, OU=SAProuter, O=SAP, C=DE" (IP-Address) 3389
PLEASE NOTE!!!!The "*" is a wildcard for all ports within 3200 and 3299. All otherports must be specified with their own lines.
When you make changes to saprouttab please run "saprouter -n" toreload the new saprouttab. You may also restart the router.

2. The connection needs to be re-established again from scratch (the SAProuter should come to disconnect state), otherwise, you may get error like :
route permission denied sapserv2 to (IP address of machine), (Port Number) Location: SapRouter on hostname(of machine where saprouter is running)
The above error can also come if the host entry is not maintained in saprouttab file as given above.

Reset Host Name Buffer : SM59 not working

Sometimes SM59 RFC connection doesn't work after change of IP address of server. Go to SM51 -> Goto -> Hostname Buffer -> Reset .

It may work fine after that .

Reference : https://forums.sdn.sap.com/message.jspa?messageID=5838310

Activation of ITS integrated in ECC 6.0 server

Prior to ECC 6.0, you need to install stand alone ITS server for accessing SAP GUI screens in Web Browser ( HTML based GUI), Now we can activate integrated ITS server in ECC 6.0 with the following steps:

1. Check whether the integrated ITS is active.
a) Check that profile parameter itsp/enable is set to 1, either by:
. Executing report RSPFPAR
. Executing report SITSPMON
. Calling transaction RZ11
Note that all of these approaches are instance-specific.

2. Verify that the ICF service /sap/bc/gui/sap/its/webgui is active and intended for
calling the GUI.
Verify that the ICF service /sap/public/bc/its/mimes is active and that Not
Specified is entered for the GUI link.
a) Call the Maintain Services transaction SICF. Accept the default values
and choose Execute.
b) Navigate to the service /sap/bc/gui/sap/its/webgui and activate it if
necessary (click the secondary mouse button and choose Activate Service).
Double-click the service and make sure that the GUI Link field on the
Service Data tab page contains the value Yes.
Navigate to the service /sap/public/bc/its/mimes and activate it if
necessary (click the secondary mouse button and choose Activate Service).
Double-click the service and make sure that the GUI Link field on the
Service Data tab page contains the value Not Specified.

3. Start the SAP GUI for HTML from transaction SICF.
Can you start the transaction from the command field?
a) In the hierarchy tree in transaction SICF, click the /sap/bc/gui/sap/its/webgui
node with the secondary mouse button and choose Test Service.
b) Log onto the SAP GUI for HTML Web browser with your ADM102-##
user and password. The system may display warnings about the logon
procedure. If so, choose Log On and enter your details.
Choose the small triangle in the top-left of the screen to display the
command field in which you can enter transaction codes.
Go to transaction code SE80
Choose Internet Service and select the following types
Type SYSTEM (enter)-----Right Click on SYSTEM----Publish-->Complete service
Type WEBGUI (enter)-----Right Click on WEBGUI----Publish-->Complete service
Check whether the its is enabled or not through testing in the following node
Navigate to /sap/bc/gui/sap/its/webgui
Right Click webgui and select Test Service option
If ITS is enabled then it should allow you to login via browser.