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Startup Fails With ORA-27100 After Restarting The Windows Service (Doc ID 370469.1)

Last updated on FEBRUARY 14, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 9.2 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
z*OBSOLETE: Microsoft Windows Server 2003


ORA-27100 is reported during a manual startup of the database .

Restarting the service, the same error is encountered.
Rebooting the server does not help as well (because that also restarts the service).


The parameter sga_max_size was increased, e.g. from 2GB to 3GB.


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