Oracle® Database 11g / 12c / 18c error codes ORA-00307: requested INSTANCE_NUMBER out of range, maximum is [string]

ORA-00307: requested INSTANCE_NUMBER out of range, maximum is [string]

Oracle Error Code: ORA-00307

Cause: The initialization parameter INSTANCE_NUMBER specified a number that was out of range.

Action: Change INSTANCE_NUMBER to a valid range and restart the instance. The minimum value is one and the maximum value is the lower of the operating system-specific maximum or the MAXINSTANCES option specified in the CREATE DATABASE statement. See also your operating system-specific Oracle documentation.