Scenario 5: The message server starts but the dispatcher doesn't

There's probably nothing worse than not being able to start your SAP system. Where's the problem? The operating system? The database server? Or perhaps it is time to dive into the dark corners of SAP to get some answers? This handy troubleshooting guide by veteran site expert Giovanni Davila will help you figure out what's going on.

Symptoms
  • The dispatcher shows status "stopped" in the SAP MMC.
  • The "dev_disp" file shows these errors:
    ***LOG Q0A=> NiIServToNo, service_unknown (sapdp00) [nixxi.c 2580]
    *** ERROR => DpCommInit: NiDgBind [dpxxdisp.c 7326]
    *** DP_FATAL_ERROR => DpSapEnvInit: DpCommInit
    *** DISPATCHER EMERGENCY SHUTDOWN ***

Problem Analysis
The keyword in the messages above is "service unknown" followed by the entry name "sapdp00". The dispatcher entry "sapdp00" is missing in the "services" file. Example: sapdp00 3200/tcp

Solution
Add the necessary entry in the "services" file. Example: sapdp00 3200/tcp Then, re-start the instance.


TROUBLESHOOTING SAP STARTUP PROBLEMS

 Home: Introduction
 Scenario 1: Dispatcher does not start due to a port conflict
 Scenario 2: Dispatcher dies due to a database connection problem
 Scenario 3: SAP does not start at all: no message server and no dispatcher
 Scenario 4: Users get 'No logon possible' messages when they attempt to log in
  Scenario 5: The message server starts but the dispatcher doesn't
 Scenario 6: Work processes die soon after they start
 Review: Conclusion and more resources
This was last published in July 2005

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