ORA-04043: object dba_tablespaces does not exist
If you try to describe any DBA_* views in mount state after opening database describing those views will give you ORA-04043 Object does not exist error. Solutions: Restart the database Flush Shared pool with "alter system flush shared_pool" References http://kr.forums.oracle.com/forums/thread.jspa?threadID=557085 metalink note 296235.1