In this blog I am explaining the SAP System down reasons
1. OS Level checks
2. Database level checks
3. SAP Level checks
------------------------OS level-------------------------
1.check all SAP and DB file systems/ disk drives are available and visible.
2.Check the file systems are not full especially the oracle archive logs, datafile, sapdata.
3.Check the dev_*, files and take a backup of these files as they would become *.old files after an attempt to startup SAP.
4. Check the process of SAP are running dw* or disp+work
5. If you are not able to connect through sapgui - check through the cmd prompt or os prompt the dpmon if some work process in SAP are running or in stopped status.
6.Check if the R3trans -d connect is succesful, if not then db connectivity is an issue.
7.check OS system logs, event viewer(system & application) if there is any significant ones.
8.check if your cpu, memory usage is not abnormal and not reaching 100% levels.
9.check if you are able to ping the host and if the network connectivity between server and user location is not the problem.
------------------DB Level-------------------------
Check the db service is running or the process is running (pmon, ora*)
check the db alert logs for any problems there such as any corruption, recovery.
check the db connectivity using basic tests.(sql connect)
---------------------SAP Level-----------------------
Check all application servers are running and it might be if one app server is down.
2.Check the file systems are not full especially the oracle archive logs, datafile, sapdata.
3.Check the dev_*, files and take a backup of these files as they would become *.old files after an attempt to startup SAP.
4. Check the process of SAP are running dw* or disp+work
5. If you are not able to connect through sapgui - check through the cmd prompt or os prompt the dpmon if some work process in SAP are running or in stopped status.
6.Check if the R3trans -d connect is succesful, if not then db connectivity is an issue.
7.check OS system logs, event viewer(system & application) if there is any significant ones.
8.check if your cpu, memory usage is not abnormal and not reaching 100% levels.
9.check if you are able to ping the host and if the network connectivity between server and user location is not the problem.
------------------DB Level-------------------------
Check the db service is running or the process is running (pmon, ora*)
check the db alert logs for any problems there such as any corruption, recovery.
check the db connectivity using basic tests.(sql connect)
---------------------SAP Level-----------------------
Check all application servers are running and it might be if one app server is down.
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