Oracle® Database 11g / 12c / 18c error codes ORA-12492: DBLOW cannot be changed
ORA-12492: DBLOW cannot be changed
Oracle Error Code: ORA-12492
Cause: You attempted to change the value of DBLOW after it had been set to any initial value. DBLOW can only be set once after initial database creation.
Action: To change DBLOW, you have to create a new database, set DBLOW to the new value, and import your data into the new database.