Determining size of table in Oracle database

Digg This!     StumbleUpon     Del.icio.us

RELATED CONTENT Oracle database design and architecture Why am I receiving Oracle memory allocation errors? How to join two tables with unique keys in Oracle How does the Oracle LGWR write to online redo log files? Can I check an Oracle instance without logging into the Oracle server? How to use V$SEGMENT_STATISTICS to find the most accessed Oracle table Can I install an Oracle client on Windows 7? How to use the Oracle Database Upgrade Assistant (DBUA) Can I specify Oracle column order in my database table? Can I have a single Oracle 11g RAC instance across multiple databases? How to use the Oracle export utility to duplicate database structure Oracle database design and architecture Why am I receiving Oracle memory allocation errors? How to join two tables with unique keys in Oracle How does the Oracle LGWR write to online redo log files? Can I check an Oracle instance without logging into the Oracle server? How to determine your SQL database through needs analysis Diving deeper into the SQL database features Breaking down the contenders in the SQL database market The MySQL open source database in the enterprise What managers should consider when starting a database scaling project How to use V$SEGMENT_STATISTICS to find the most accessed Oracle table How much space is used by a table or index? Space used by an index in Oracle What is the space occupied by a specific record? Calculating space needed to create index Calculating space used by one table and index

RELATED GLOSSARY TERMS Terms from Whatis.com − the technology online dictionary E. F. Codd  (SearchOracle.com) extent  (SearchOracle.com) flexfield  (SearchOracle.com) foreign key  (SearchOracle.com) multidimensional database  (SearchOracle.com) object-oriented database management system  (SearchOracle.com) quad tree  (SearchOracle.com) relational online analytical processing  (SearchOracle.com) row  (SearchOracle.com) splay tree  (SearchOracle.com)

RELATED RESOURCES 2020software.com, trial software downloads for accounting software, ERP software, CRM software and business software systems Search Bitpipe.com for the latest white papers and business webcasts Whatis.com, the online computer dictionary

Any object in Oracle that requires space is called a SEGMENT. Tables and indexes are both considered segments. A view, stored procedure and sequences are examples of objects that are not considered segments since only their definition is stored in the Data Dictionary.

If you want to see the size of any segment, you can query the DBA_SEGMENTS view. So to find the size of a table, use the following query:

SELECT bytes FROM dba_segments
WHERE owner='SCOTT' AND segment_name='EMP';