How do you check if SAP system is down?

 

How do you check if SAP system is down?

List of  SAP Basis Technical Troubleshooting and Performing initial analysis.

Possibility to check below points.

1. Software Changes
2. Hardware installation
3. Scripts
4. SAP/OS profile parameters,
5. Database structure

System (Hardware) is down:

• Check Operating System console messages .
• Reboot and backup important system log files.
• Check hardware components status.
• Check Hardware main log files.
• System Start up/shut down log files.

Startup and shutdown problems (SAP Application servers):

• Check hosts processes or services at operating system level.
• Check connection with database.
• Check whether file systems are full like Log directory. 
• Check for network problems in the server network. 
• Try to Manually start up or shut down database and then the application server. 

Operating system problems:

• Check operating system log and event viewers.
• Check disks and file systems.
• Check path names.
• Check security.

Database problems:

• Check Manually Starting and stopping database.
• Refer to startup problems.
• Check database specific error log file.
• Database storage status
• Check database error numbers.
• Check database alerts.

SAP application operational problems:

• Check whether all users are affected.
• Check whether there is no work at all, or whether work is just limited. 
• Check whether application servers are available (SM51). 
• Check trace files on work directory (/usr/sap/<SID>/<instance>/work). 
• Check SAP systems alerts. 
• Analyze database problems.