Hi, Sometimes you can get  “ORA-12919: Can not drop the default permanent tablespace ” error.   Details of error are as follows. ORA-12919: Can not drop the default permanent tablespace Cause: An attemp was made to drop the default permanent tablespace Action: Make a different tablespace as the default permanent tablespace and reissue the drop SQL> drop … Continue reading ORA-12919: Can not drop the default permanent tablespace