oracle list tables

1SELECT * FROM ALL_TABLES;

1SELECT * FROM USER_TABLES;		-- Tables from connected schema
2SELECT * FROM ALL_TABLES;		-- Tables available to connected schema
3	SELECT * FROM ALL_TABLES WHERE OWNER = 'SCHEMA_NAME';
4	SELECT * FROM ALL_TABLES WHERE TABLES_NAME = 'TABLE_NAME';
5SELECT * FROM DBA_TABLES;		-- All Tables

1-- NOTE: for Oracle ONLY
2
3select * 
4from all_tables;

1SELECT e.OWNER, e.SEGMENT_NAME, e.TABLESPACE_NAME, sum(e.bytes) / 1048576 AS Megs
2FROM dba_extents e
3WHERE
4  e.OWNER = 'MY_USER' AND
5  e.TABLESPACE_NAME = 'MY_TABLESPACE'
6GROUP BY e.OWNER, e.SEGMENT_NAME, e.TABLESPACE_NAME
7ORDER BY e.TABLESPACE_NAME, e.SEGMENT_NAME;