Rename a table, view, sequence or private synonym.
  
  Syntax:
RENAME old TO new
To rename table columns:
CREATE TABLE tmp AS SELECT MyColOld MyColNew, col2, col3 FROM MY_TABLE;
DROP TABLE MY_TABLE;
RENAME tmp TO MY_TABLE;
You can also
ALTER TABLE MODIFY COLUMN…
ALTER TABLE DROP COLUMN…
ALTER TABLE SET UNUSED COLUMN…
"A clever man commits no minor blunders" ~ Goethe (1749-1832)  
  
Related Oracle Commands:
 TABLE - CREATE TABLE
  TABLE - ALTER TABLE 
  INSERT
  SELECT
  TRUNCATE
  UPDATE 
Related Views:
 DBA_SNAPSHOTS        ALL_SNAPSHOTS        USER_SNAPSHOTS 
  
 DBA_ALL_TABLES       ALL_ALL_TABLES       USER_ALL_TABLES
  
 DBA_TABLES           ALL_TABLES           USER_TABLES         TAB
  
 DBA_VIEWS            ALL_VIEWS            USER_VIEWS
                                                                
 DICTIONARY
                                                                
 DICT_COLUMNS