Cause: An ALTER DATABASE RECOVER TO LOGICAL STANDBY new-dbname command was successfully executed without a modifiable server parameter file (SPFILE). See the solution below.
Error solution: The server-side parameter file must be modified so that db_name is set to the given name before mounting the database again. You must do this by executing CREATE PFILE FROM SPFILE, editing the resulting text parameter file, and then executing CREATE SPFILE FROM PFILE.
Database version: Oracle 11g Release 2 (11.2)