Hi Willem,
You did not inform about the operating system you are using.
1. Anyway, go to OS level and check the license status.
Command is (for Unix)
saplikey pf=<Instance profile> -show
https://help.sap.com/saphelp_nw73/helpdata/en/c3/e84ae90d9d427e92b0ceb69292ef4f/content.htm
It should show you the license status:
N. License Key:
------------------------------------------
System :
Hardware Key :
Software Product :
Software Product Limit :
Type of License Key :
Installation Number :
System Number :
Begin of Validity :
End of Validity :
Last successful check :
Validity : Valid
------------------------------------------
N license keys listed
2. If the license looks valid, then please stop the system, kill all <SID>adm process, cleanipc, and then startup.
Please let us know.
Regards,
Sujit K Banerjee.